-4d90550d17f4602e089-bbe 20220601012353727 beie:beie director@blueeyesintelligence.org WEB-FORM International Journal of Recent Technology and Engineering (IJRTE) IJRTE 22773878 10.35940/ijrte.2277-3878 https://www.ijrte.org/ 11 30 2019 8 4 Faculty of chemical engineering, Universiti Teknologi MARA, Shah Alam Norliza Ibrahim* Alia Syazana Mohamed Faculty of chemical engineering, Universiti Teknologi MARA, Shah Alam, Selangor. Replacing non-biodegradable to degradable polymers are very much in concern due to reduction of petroleum supply, environment and economical related to waste disposal. Polylactic acid (PLA) shows a promising alternative to produce biodegradable plastic. The polymerization happened in homogenous phase where the catalyst, mostly used tin octoate, and the lactide are mixed in liquid phase to form PLA. However, this method become problematic for the product because the catalysts remain with the PLA and the degradation of catalyst occurred. Therefore, this study aims to convert the homogeneous catalyst to heterogeneous using ceramic waste as the support and to characterize the PLA produced by using Ultraviolet Visible (UV-Vis) Spectrometer and Fourier Transform Infrared Spectroscopy (FTIR). The experiment was carried out at different temperatures which were 110℃, 120℃ and 130℃. From the results obtained, the highest concentration of PLA produced is at temperature of 130℃ by using heterogenous catalyst. Therefore, it can be concluded that heterogeneous catalyst can be a new method of producing PLA. 11 30 2019 6983 6987 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5189.118419 https://www.ijrte.org/portfolio-item/D5189118419/ Faculty of Mechanical Engineering, Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia Mohd Nor Azmi Ab Patar* Norlisa Ramlee Faculty of Mechanical Engineering, Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia. Jamaluddin Mahmud Faculty of Mechanical Engineering, Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia. Hokyoo Lee Department of Mechanical and Control Engineering, Niigata Institute of Technology, Japan. Akihiko Hanafusa Department of Bio-science and Engineering, Shibaura Institute of Technology, Japan. A smart wheelchair (SW) is a power wheelchair (PW) consist of microcontroller, actuators, sensor, and implement the assistive technology in system architecture. Users with severe motor impairment may realize the difficulty to operate a wheelchair when they are in a tight space such as passing a doorway or when avoiding obstacles since, they are unable to control the wheelchair. This project embarked on an obstacle avoidance system of a wheelchair. This project developed a cost-effective system that alarmed the user to avoid obstacle on its path. The prototype includes a Kinect camera and ultrasonic sensors. Kinect camera was placed at the right side of the wheelchair for real time video obstacle detection. Four of the ultrasonic sensors was used to detect obstacle at the front and one ultrasonic sensor for rear obstacle detection. Any obstacle detected by the ultrasonic sensors triggered the buzzer. Obstacle detected by Kinect camera was displayed with specific command for the user in attempt for obstacle avoidance. The performance of the obstacle avoidance system was tested indoor to detect obstacles in a controlled environment. The accuracy of the ultrasonic system was tested at a specific distance of 20mm to 200mm at 20mm intervals. Real time video received from the Kinect Camera was used to analyse the depth of the environment and the location of the object. 11 30 2019 6988 6993 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5190.118419 https://www.ijrte.org/portfolio-item/D5190118419/ Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450, Shah Alam, Malaysia. Mohamed Hasaan Hussain* Noor Fitrah Abu Bakar* corresponding author, Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450, Shah Alam, Malaysia. Lim Ying Pei Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450, Shah Alam, Malaysia. Lim Ying Chin Faculty of Applied Sciences, Universiti Teknologi MARA, 40450, Shah Alam, Malaysia. Mohd Nazli Naim Faculty of Engineering, Universiti Putra Malaysia, Selangor, 43400 Serdang, Malaysia. This research study aims at fabrication of fine size nitrogen doped TiO2 nanofiber using electrospinning method and evaluation of the performance of TiO2 in a photovoltaic cell under visible light irradiation. Undoped and N doped TiO2 nanoparticles were synthesized by sol gel method where titanium isopropoxide was used as the source of TiO2 and ammonium nitrate was used as the source of N dopant. TiO2/PVA composite material was prepared by stabilizing TiO2 particle in to 10 wt % of PVA (aq) solution in order to prepare thin film that can be coated on photovoltaic (PV) cells. Coating of solid thin film PV cells by TiO2/PVA nanofibers was conducted using electrospinning and doctor blade method. In both systems, doping the TiO2 with nitrogen improved its optical properties which it successfully lowered the band gap energy from 3.14 to 2.76 eV and shifted its optical response to the visible light region. The presence of O-H stretching vibration, O-H bending and vibration of the N-Ti bond contributed to an increased performance of the PV cells. The electrospun N-doped TiO2 produced better power output than doctor blade method coated PV cells with power of 0.040 and 0.026 mW, respectively. 11 30 2019 6994 7000 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5191.118419 https://www.ijrte.org/portfolio-item/D5191118419/ Institute for Infrastructure Engineering and Sustainability Management, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia. Ekarizan Shaffie* Ahmad Kamil Arshad Institute for Infrastructure Engineering and Sustainability Management, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia. Ramadhansyah Putra Jaya Faculty of Civil Engineering and Earth Resources, Universiti Malaysia Pahang, 26300 Gambang, Pahang, MALAYSIA. Wardati Hashim Faculty of Civil Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia. Mohd Amin Shafii Centre of Geotechnics, Faculty of Engineering and The Built Environment, SEGi University, Kota Damansara, 47810 Petaling Jaya, Selangor, Malaysia. Premature pavement breakdown can be caused by permanent deformation that can contribute to lower riding comfort for road users and an increase in maintenance costs. Dynamic modulus Simple Performance Test (SPT) test are considered to be significant in describing the permanent deformation of hot mix asphalt. In this study, Marshall method of mix design were used in order to prepare four asphalt mixtures comprising different content of Nanopolyacrylate (NP) polymer (0%NP, 2%NP, 4%NP and 6%NP). This study was aimed to evaluate the influence of the NP modified mixture on the permanent deformation. The Performance Grade PG64-22 was obtained by mixing the conventional bitumen (PG64-22) with nanopolyacrylate. Dynamic Shear Rheometer (DSR) at different aging condition were conducted in order to characterise the bitumen performance. While, the Simple Performance Test (SPT) was used to characterize rutting and fatigue on Marshall HMA mixes. Results from the study presented that, NP modified bitumen has a significant impact on the dynamic and rutting resistance. The addition of nanopolyacrylate significantly enhances the rheological properties of asphalt bitumen. The results revealed that 4%NP has high potential to improve rutting and fatigue resistance. 11 30 2019 7001 7006 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5192.118419 https://www.ijrte.org/portfolio-item/D5192118419/ Faculty of Civil Engineering, University Technology MARA, 40450 Shah Alam, Selangor, Malaysia. Norhafezah Kasmuri* Muhammad Zaidi Misni Faculty of Civil Engineering, University Technology MARA, 40450 Shah Alam, Selangor, Malaysia. Leachate is a liquid that has been produced by the waste especially organic waste. In an engineered sanitary landfill, biological treatment is a common practice to reduce the leachate contaminants. The effluent from treated leachate needs to comply with the standard set by the Department of Environment (DOE), Malaysia before it is being released into the river. The leachate contains a high number of contaminants such as ammonia-nitrogen, phosphorus, heavy metal, biochemical oxygen demand (BOD), chemical oxygen demand (COD) and suspended solids. This study focused on the possibility of treating leachate by using algae and bacteria in biological treatment in removing ammonia-nitrogen and phosphate in leachate obtained from Air Hitam Sanitary Landfill, Puchong. Initially, the characteristics of the leachate sample with in-situ and laboratory tests were analyzed to quantify the contaminants in the leachate. In this research, the concentration of leachate samples together with algae and bacteria was diluted in one (1) liter of distilled water varied between 10%, 30%, 50%, 80% and 100% (v/v) in each flask. Then, all the samples were aerated to ensure that the algae and bacteria were at the optimum condition to treat the contaminants in the leachate for all the respective flasks. The results of ammonia-nitrogen, phosphate, nitrite-nitrogen, and nitrate-nitrogen were taken for every 3 days for 15 days to determine the percentage of the removal due to the algae and bacteria uptake in the leachate for all the samples. After 15 days, the percentage of removal of the contaminants were analyzed using factorial design. It showed that 50% (v/v) of leachate concentration in the diluted flask exhibits the highest removal percentage of ammonia-nitrogen with 96.95% ammonia-nitrogen being removed from the leachate. For phosphorus, 10% (v/v) diluted leachate concentration marked highest which is 94.92% has been removed from the leachate. Finally, the regression equation was established to predict the rate of ammonia-nitrogen removal. 11 30 2019 7007 7012 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5193.118419 https://www.ijrte.org/portfolio-item/D5193118419/ Orchestrated Polymer research Group, OpoR, Faculty of Applied Sciences, Universiti Teknologi MARA Shah Alam, Malaysia. Siti Aisyah Jarkasi* Dzaraini Kamarun* Orchestrated Polymer research Group, OpoR, Faculty of Applied Sciences, Universiti Teknologi MARA Shah Alam, Raja Roslan Raja Mohamed Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, Malaysia. Azemi Samsuri Institute of Quality and Knowledge Advancement (InQKA), Universiti Teknologi MARA, Shah Alam, Malaysia, Knotty tearing is a phenomena normally observed in reinforced black-filled natural rubber (NR) vulcanizate but not in gum NR vulcanizate. Unfortunately the underlying cause of knotty tear is still not fully understood and need to be unraveled. Many factors contribute to knotty tear behavior which include suppression of strain-induce crystallization, protein content of latex, vulcanization temperature and pre-vulcanization and post-vulcanization of latex. In this study, we concentrate on varying the maturation time during compounding process in filled NR latex (NRL) to study knotty tear behavior. The maturation time were varied in the range (0 – 72) hrs; and the tear deviation were measured to determine the extent of knotty tear phenomena. It was found that at the optimum maturation time of 24 hrs samples show highest tearing energy and show knotty tear phenomena with the least angle of tear deviation. 11 30 2019 7013 7017 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5194.118419 https://www.ijrte.org/portfolio-item/D5194118419/ Faculty of Mechanical Engineering, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia A. H. A. Hamid* L. H. Kamaruhen Faculty of Mechanical Engineering, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia, M. H. M. Noh Faculty of Mechanical Engineering, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia The present study focuses on improving the cyclone abatement device that is used in the agriculture and processing industries such as palm oil mill industry. The air flow trajectories are simulated and analyzed using the Computational Fluid Dynamics (CFD). Cyclones use the principle of inertia to remove particulate matter from flue gases. The current design of the cyclone is not able to collect particulate matter that is smaller than 10 micrometers effectively. This will result in negative effect to the environment as well as to the community. Thus, it is essential to modify the cyclone filters and study its effects on the overall performance of the cyclones. The principle idea of the geometrical modification is to alter the boundary layer adjacent to the inner wall of the cyclone in order to enhance the cyclone performance. The collection efficiency and pressure drop are the main factors that can affect the performance of the cyclone. The separator plates are designed in certain sizes to be placed inside the cyclone with different positions. It is shown that the position of the plate inside the cyclone significantly affects the performance of the cyclone filter. The cyclone with 145 mm separator plate has shown to produce highest efficiency marked 45.23 % relative to the standard cyclone. In overall, the separator plate significantly increases the cyclone performance. 11 30 2019 7018 7021 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrteD5195.118419 https://www.ijrte.org/portfolio-item/D5195118419/ Orchestrated Polymer Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, Malaysia Ummu Qani’ah Yasin Engku Zaharah Engku Zawawi* Orchestrated Polymer Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia. Hairani Tahir Orchestrated Polymer Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, Malaysia Noorazlina Adnan Centre of Foundation Studies, Universiti Teknologi MARA, Cawangan Selangot, Kampus Dengkil, 43800 Dengkil, Selangor. Dzaraini Kamarun* Orchestrated Polymer Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia. Rubber compounds normally shows blooming phenomena whereby a thin layer of powdery material or films and oils formed on the surface. These blooms are usually low molecular weight compounding ingredients such as curing agents, accelerator, processing aids and activators that migrated to the surface. Excessive blooming can degrade the vulcanized rubber and reduced its quality. It is therefore necessary to determine the compounding ingredients that bloomed in an effort to reduce the effect of blooming. This study was aimed at identifying the compounding ingredients that dominate the blooming process. Sulphur, paraffin wax and zinc diethyldithiocarbamate (ZDEC) with specific functions were added as compounding ingredients in natural rubber (SMR L). Dicumyl peroxide were added as the curing agent at several loadings. The rubber compounds were cured at 150oC in the presence of dicumyl peroxide as curing agent at several loadings. They were stored under room temperature for blooming to take place. Blooms were analysed using FTIR and EDX. EDX analysis detected the major element present in the blooms to be carbon at 53.5% abundance. Similarly, FTIR results produced high intensity of C-H band at 2916 cm-1 and 722 cm-1 which are due to stretching and bending vibration of C-H paraffinic. It was concluded that paraffin wax preceded sulphur and ZDEC in blooming of SMR L. 11 30 2019 7027 7031 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5197.118419 https://www.ijrte.org/portfolio-item/D5197118419/ Orchestrated Polymer Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, Malaysia.. Ummu Qani’ah Yasin Engku Zaharah Engku Zawawi* Orchestrated Polymer Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia. Hairani Tahir Orchestrated Polymer Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, Malaysia.. Noorazlina Adnan Centre of Foundation Studies, Universiti Teknologi MARA, Cawangan Selangot, Kampus Dengkil, 43800 Dengkil, Selangor. Dzaraini Kamarun* Orchestrated Polymer Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia. Rubber compounds normally shows blooming phenomena whereby a thin layer of powdery material or films and oils formed on the surface. These blooms are usually low molecular weight compounding ingredients such as curing agents, accelerator, processing aids and activators that migrated to the surface. Excessive blooming can degrade the vulcanized rubber and reduced its quality. It is therefore necessary to determine the compounding ingredients that bloomed in an effort to reduce the effect of blooming. This study was aimed at identifying the compounding ingredients that dominate the blooming process. Sulphur, paraffin wax and zinc diethyldithiocarbamate (ZDEC) with specific functions were added as compounding ingredients in natural rubber (SMR L). Dicumyl peroxide were added as the curing agent at several loadings. The rubber compounds were cured at 150oC in the presence of dicumyl peroxide as curing agent at several loadings. They were stored under room temperature for blooming to take place. Blooms were analysed using FTIR and EDX. EDX analysis detected the major element present in the blooms to be carbon at 53.5% abundance. Similarly, FTIR results produced high intensity of C-H band at 2916 cm-1 and 722 cm-1 which are due to stretching and bending vibration of C-H paraffinic. It was concluded that paraffin wax preceded sulphur and ZDEC in blooming of SMR L. 11 30 2019 7027 7031 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5197.118419 https://www.ijrte.org/portfolio-item/D5197118419/ senior lecturer of the Faculty of Chemical Engineering (FKK) UiTM Shah Alam. Malaysia Siti Rafidah Ab Rashid* Mohamad Amirul Bin Mohamad Kamal Currently, Project Engineer Calreno Sdn Bhd. Negeri Sembilan. Inherent safety (IS) is a proactive approach for safety management during process plant design and operation. It has been proven that, considering the lifetime costs of a process and its operation, an inherently safer approach is an environmentally friendly and cost-optimal option. IS can be incorporated at any stage of design and operation. However, application of IS is highly effective at the early design stage. In this work, incorporation of IS in designing offshore oil and gas (O&G) drilling operations is successfully done to achieve risk reduction. Some of offshore hazards/concerns including highly flammable substances, possible harsh weather conditions, toxic gas i.e. hydrogen sulphide and congested platforms and rigs layout are challenging to overcome especially during emergency responses. Based on this knowledge, we intend to exploit the versatility of the principles of IS for the purpose of achieving risk reduction in relation to offshore O&G drilling operations. As for hazard identification, HAZID is chosen while relevant IS principles – “substitution”, “moderation” and “simplification” are recommended for risk reduction efforts. 11 30 2019 6819 6824 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5198.118419 https://www.ijrte.org/portfolio-item/D5198118419/ Faculty of Mechanical Engineering, Universiti Teknologi MARA Kampus Pasir Gudang, Johor, Malaysia. Jamaliah Md Said Muhammad Hussain Ismail* Faculty of Mechanical Engineering, Universiti Teknologi MARA Shah Alam, Selangor, Malaysia. Nurrul Amilin Zainal Abidin Faculty of Mechanical Engineering, Universiti Teknologi MARA Kampus Pasir Gudang, Johor, Malaysia. Additive manufacturing (AM) is a process of making parts by adding ultrathin layers of materials such as liquid, powder or sheet material layer by layer using 3D printing machine with the aid of a computer-aided design (CAD) software from 3D model data. Intricate, complex parts with graded material can be fabricated with ease. However, additively manufactured parts can vary in physical and mechanical properties with conventionally manufactured parts. In this final year project, AM was done using metal powder of 316L stainless steel alloy owing to good corrosion resistance, ductility and strength. The main objectives for this project are to fabricate 316L stainless steel using AM and to study the physical and mechanical properties of the addictively manufactured specimens compared with electrical discharge machining (EDM) wire cut specimens. A standard specimen bone shaped were manufactured in accordance with ASTM E8 and followed by physical and mechanical testing. From the testing and analysis, 316L stainless steel samples manufactured via AM route have the ultimate tensile strength ranged from 514 to 520 MPa while EDM specimens ranged from 574 to 576 MPa, the yield strength of AM specimens ranged from 385 to 390 MPa while EDM specimens ranged from 350 to 355 MPa, and the average elongation at failure of AM specimens are 45% while EDM specimens are 66%. From this project, it shows that AM specimens have comparable physical and mechanical properties with EDM specimens. 11 30 2019 6825 6829 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5199.118419 https://www.ijrte.org/portfolio-item/D5199118419/ Faculty of Mechanical Engineering, Universiti Teknologi MARA/Shah Alam, Selangor, Malaysia. Aidah Jumahat* Norhashidah Manap Faculty of Mechanical Engineering Universiti Teknologi MARA, Cawangan Terengganu, Kampus Bukit Besi, Malaysia. Anis Adillah Abu Taib Faculty of Mechanical Engineering, Universiti Teknologi MARA/Shah Alam, Selangor, Malaysia. Tg Faizuddin Tg Mohd Azmi Faculty of Mechanical Engineering, Universiti Teknologi MARA/Shah Alam, Selangor, Malaysia. The present work investigates the wear properties of nanoclay-modified carbon fiber reinforced polymer (CFRP) composites when sliding under adhesive and abrasive wear. The specimens were fabricated using epoxy resin, short carbon fiber, and nanoclay filler of 1.0wt%, 3.0wt%, and 5.0wt% content. The wear tests were conducted using pin-on-disc and abrasion resistance test rig for adhesive and abrasive wear condition, respectively. Operating parameters were fixed at 30N load, 300rpm speed and 10km distance for both tests. Pure CFRP composite exhibited lower wear performance compared to pure epoxy in both test conditions. However, with nanoclay incorporation, the wear properties of CFRP composite have improved up to 56% and 44% under adhesive and abrasive wear, respectively. Therefore, the composite reinforced polymer of carbon fiber and nanoclay filler in epoxy matrix provides a synergistic effect under adhesive and abrasive wear conditions. The experimental findings suggest that the CFRP composite has the potential for tribological components and application such as sliding-contact and rolling-contact bearings. 11 30 2019 6836 6841 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5201.118419 https://www.ijrte.org/portfolio-item/D5201118419/ Faculty of Mechanical Engineering, Universiti Teknologi MARA, Selangor, Malaysia. Ummu Raihanah Hashim* Aidah Jumahat* Faculty of Mechanical Engineering, Universiti Teknologi MARA, Selangor, Malaysia. Nur Syarah Iffah Azizi Faculty of Mechanical Engineering, Universiti Teknologi MARA, Selangor, Malaysia. An experimental study was performed to investigate the flexural behaviour of chopped kenaf and carbon fibre reinforced polymer composites embedded with carbon nanotubes (CNT). The fibre content in the composites was 10 wt.% with three different CNT loadings, which were 0.5wt.%, 1.0wt.%, and 1.5wt.%. The CNT were dispersed in the epoxy resin using the mechanical stirrer and three-roll mill machine and mixed with the chopped fibres before being poured into the designated mould. Three-point bending tests were conducted with a specimen thickness and width of 4 mm and 10 mm, respectively, and a standard specimen length of 20% longer than the support span. The flexural test results showed that the chopped carbon fibre reinforced polymer (CFRP) with 0.5wt.% CNT exhibited the highest flexural strength and modulus (42 MPa and 2.9 GPa, respectively) compared to other composites with 1.0wt.% and 1.5wt.% CNT loading. The chopped kenaf fibre reinforced polymer (KFRP) composite with 0.5wt.% CNT loading showed the highest increase in the flexural strength and modulus, at 30 MPa and 2.8 GPa, respectively. Hence, it was concluded that the addition of CNT improved the flexural properties and 0.5 wt.% CNT was the ideal loading to enhance the flexural properties of chopped fibre-reinforced polymer composites. 11 30 2019 6842 6846 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5202.118419 https://www.ijrte.org/portfolio-item/D5202118419/ Chemistry Postgraduate, Faculty Applied Sciences, Universiti Teknologi Mara (UiTM), Selangor, Malaysia, Nur Husna Zainal Abidin* Wan Nazihah Wan Ibrahim Chemistry and Environment, Faculty Applied Sciences, Universiti Teknologi Mara (UiTM), Selangor, Malaysia, Nor Suhaila Mohamad Hanapi Chemistry and Environment,Faculty Applied Sciences, Universiti Teknologi Mara (UiTM), Selangor, Malaysia The present study describes the synthesis, characterization and application of two mesoporous silica material based coated magnetic nanoparticles namely Fe3O4-SBA-15 and Fe3O4-MCM-41 for the simultaneous preconcentration of three selected organophosphorus pesticides (OPPs) namely chlorpyrifos, diazinon and parathion methyl from water samples. The resultant sorbent material was physicochemically and morphologically characterized by field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD) and N2 adsorption analysis. OPPs pesticides extraction efficiency of two sorbents were evaluated through magnetic solid phase extraction (MSPE) using high performance liquid chromatography with ultraviolet detector (HPLC/UV). The main parameters affecting the sorbent efficiency namely extraction time and desorption solvent were optimized. Comparatively, Fe3O4-SBA-15 achieved excellent percent recovery (97.5%) compared to the Fe3O4-MCM-41 (87.1%) under optimum condition respectively. The result appealed that the Fe3O4-SBA-15 composite was efficient sorbent with good capability for the preconcentration of selected OPPs from water samples. 11 30 2019 6847 6852 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5204.118419 https://www.ijrte.org/portfolio-item/D5204118419/ Department of Electrical Engineering, Politeknik Sultan Salahuddin Abdul Aziz Shah, Shah Alam, Malaysia. Rusnani Yahya* Muhammad Hazli Mazlan Microelectronics and Nanotechnology- Shamsudin Research Center (MiNT-SRC), Faculty of Electrical Engineering, Universiti Tun Hussin Onn, Batu Pahat, Malaysia. Solehuddin Shuib Faculty of Mechanical Engineering, Universiti Teknologi MARA,Shah Alam, Malaysia. Abdul Halim Abdullah* Faculty of Mechanical Engineering, Universiti Teknologi MARA, Shah Alam, Malaysia. Lumbar spinal fusion or lumbar interbody fusion is a surgical procedure done by putting the cages implant between the lumbar vertebra supported by rods and screws to hold the vertebra. This procedure is commonly used to treat disc degeneration diseases and other medical conditions. However, failure of the subcutaneous vertebral endplate has been identified to increase the possibility of biomechanical instability. There are broad range of designs and material types of the spinal implant cages that can be used in spinal fusion. Posterior lumbar interbody fusion (PLIF) cage is used to preserve stability and stimulate fusion between vertebrae. There are four different types of biomaterials that can be used to produce the cage namely as metal, ceramic, polymer and composite. The objective of this project is to examine the interbody fusion effects of a several type of cage’s materials. A 3D finite element model of third (L3) and fourth lumbar (L4) vertebrae with interbody fusion made up of different types of cage’s materials namely as Polyether ether ketone (PEEK), poly lactic acid (PLA), Cobalt Chromium, Titanium Alloy and Stainless Steel were developed and analysed. A fusion model developed based on the respective surgical protocols. The resulting stress and displacement within the cage at the vertebra were measured under different types of compressive loadings and motions. The results indicated an important effects of the material properties on flexibility in extension, axial rotation and lateral bending. Titanium Alloy have been identified as a good material for the metal categories, while for the composite categories PLA (Polylactic acid) has also been simulated as the best alternative material with cheaper material and lower production costs. 11 30 2019 6859 6863 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5206.118419 https://www.ijrte.org/portfolio-item/D5206118419/ Faculty of Chemical Engineering, Universiti Teknologi MARA (UiTM), Shah Alam, Selangor, Malaysia. Ashadi Azwan Abd Rahman* Azil Bahari Alias Centre of Industrial Process Reliability & Sustainability (INPRES), Faculty of Chemical Engineering, Universiti Teknologi MARA (UiTM), Shah Alam, Selangor, Malaysia. Nurul Najihah Jaafar Faculty of Chemical Engineering, Universiti Teknologi MARA (UiTM), Shah Alam, Selangor, Malaysia. Muhamad Ariff Amir Hamzah Faculty of Chemical Engineering, Universiti Teknologi MARA (UiTM), Shah Alam, Selangor, Malaysia Wan Azlina Wan Ab Karim Ghani Department of Chemical and Environmental Engineering/Sustainable Process Engineering Research Centre (SPERC), Faculty of Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia. Hydrogen sulfide (H2S) is a naturally occurring component found during microbial disintegration and processing of natural gas & oil which can cause wellbeing and condition issue if being discharged into a climate at high fixation. Activated carbon which cost a lot in manufacturing is used as an adsorbent for removing these hazardous gases. As an alternative, the abundance waste of biomass available can be converted into good use. Biochar is one of the most practical and promising adsorbents that shows incredible potential as an adsorbent for the expulsion of contaminants in wastewater and gas treatment. This study covered on the characteristics and adsorption performance of two adsorbents Activated Rice Husk Biochar (RHB) and Rice Husk Hydrogel Composite (RH-HBC) on hydrogen sulfide. RHB is prepared by treating grinded rice husk biochar using aqueous Zinc Chloride (ZnCl2) and hydrochloric acid (HCl) solution to increase the size of pores of active sites and remove the impurities present in on the adsorbents. Polymerization is conducted by using initiator (ammonium persulfate, APS), monomer (acrylamide, AAm) and crosslinker (N,N'-methylenebisacrylamide,MBA) to create treated hydrogel biochar (RH-HBC). The adsorption performance is done to evaluate the effect of sorbent weight (20 g, 25 g, 30 g), H2S gas flow rate (200 L/hr, 150 L/hr, 100 L/hr) and temperature (30℃, 50℃, 70℃). RHB shows better porosity compared to RH-HBC where it has a higher surface area (222.85m2/g) compared to RH-HBC (8.68m2/g). While the presence of alkene group C=C in RH-HBC gives more stability to withstand high temperature compared to RHB. From the result, it can be concluded that the increased the sorbent weight, give an increased in adsorption capacity. When increased the gas flow rate, it gives a shorter contact time between gas and adsorbent which result in less adsorption capacity. RH-HBC give longest breakthrough time and highest adsorption capacity compared with RHB in all experiment. 11 30 2019 6864 6870 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5207.118419 https://www.ijrte.org/portfolio-item/D5207118419/ Faculty of Chemical Engineering, Universiti Teknologi MARA (UiTM), Shah Alam, Selangor, Malaysia. Ashadi Azwan Abd Rahman* Azil Bahari Alias Centre of Industrial Process Reliability & Sustainability (INPRES), Faculty of Chemical Engineering, Universiti Teknologi MARA (UiTM), Shah Alam, Selangor, Malaysia. Muhamad Ariff Amir Hamzah Faculty of Chemical Engineering, Universiti Teknologi MARA (UiTM), Shah Alam, Selangor, Malaysia. Mohammad Aidil Ali Faculty of Chemical Engineering, Universiti Teknologi MARA (UiTM), Shah Alam, Selangor, Malaysia. Hydrogen sulphide is a poisonous gas that is commonly found in swamps and areas of high volcanic activities. Due to the dangers and hazards that it may impose such as neurological disorders and miscarriages, continuous innovative attempts to remove the gas are in place. A study was conducted to synthesize an adsorbent that is made from activated rice husk biochar and also hydrogel biochar. This study is complementary to that study where the adsorption processes using the two adsorbents are mathematically modelled. Three parameters were studied which were the adsorbent mass, the gas flow rate, and the gas temperature. It was found that for rice husk-based activated biochar, for all three parameters, the adsorption processes could be mathematically represented using Thomas Model and Yoon-Nelson Model. Meanwhile, for rice husk-based hydrogel biochar, the adsorption process could be mathematically represented using Thomas and Yoon-Nelson Model for the effect of mass of adsorbent, and Adam-Bohart for the effect of gas flow rate and gas temperature. Although the coefficient of determination (R2) suggested that Thomas and Yoon-Nelson Model are more appropriate to be used to model the latter two parameters, because the exit concentration reached the point when it was greater than half the inlet concentration well before 0-th second, the linearly regressed equation became mathematically inconsistent with the isotherm models. Kinetic studies were also done, and it was found that the adsorption processes using the activated biochar fit both pseudo-first and pseudo-second order equation. This means that the adsorption processes using the activated biochar are both physisorption and chemisorption. Meanwhile, the adsorption processes using the hydrogel biochar fit only the pseudo-second order equation, suggesting that the adsorption process is chemisorption. 11 30 2019 6871 6878 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5208.118419 https://www.ijrte.org/portfolio-item/D5208118419/ Faculty of Mechanical Engineering, Universiti Teknologi MARA, Shah Alam, Malaysia. Muhammad Rafiq Adha Misman* Azlin Mohd Azmi* Faculty of Mechanical Engineering, Universiti Teknologi MARA, Shah Alam, Malaysia. Zainal Abidin Kamarul Baharin Faculty of Mechanical Engineering, Universiti Teknologi MARA, Shah Alam, Malaysia. Ahmed Hussein Abdul Hamid Faculty of Mechanical Engineering, Universiti Teknologi MARA, Shah Alam, Malaysia. Add-on devices are widely used as one of the means of suppressing vortex induced vibrations from bluff bodies. The present study numerically investigates flow over a circular cylinder attached by an axial slat. The axial slat were of uniform and non-uniform openings of 67% and 44% porosity. The governing equation was solved using viscous-laminar model at Reynolds number, Re=300. It was found that the presence of the axial slats significantly suppressed vortex shedding behind the circular cylinder. The non-uniform slats showed longer vortex formation length with lower drag, in comparison to that of the uniform slats. In addition, the slats with 67% porosity of both uniform and non-uniform openings suppressed vortex better than that of 44% porosity slats, indicated by the longer vortex formation length and weaker intensity of vortices. 11 30 2019 6879 6885 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5210.118419 https://www.ijrte.org/portfolio-item/D5210118419/ Faculty of Mechanical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia. Mohd Hafiz Mohd Noh* Ahmad Hussein Abdul Hamid Faculty of Mechanical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia. Kochi Mori Department of Aerospace Engineering, Nagoya University, Nagoya, Japan. The process of collision flattening is difficult to evaluate via experiment because is normally under rapid conditioned (in μsec). Via simulation, under compressible flow condition we propose a moving particle semi implicit method (MPS) coupling with finite volume method (FVM) to examine the deformation, splitting and conjoining of liquid. The substrate temperature has been constant at 673K. The result shows that the phenomena of splat behavior have been successfully being observed. The validation of droplet flow field also being confirm visually. Besides, the substrate temperature also influences the shape of the splat. 11 30 2019 6886 6890 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5211.118419 https://www.ijrte.org/portfolio-item/D5211118419/ Integrated Sensor Research Group, Faculty of Electrical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor Malaysia R. A. Rahman M. A. Zulkefle Integrated Sensor Research Group, Faculty of Electrical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor Malaysia. S. H. Herman* Integrated Sensor Research Group, Faculty of Electrical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor Malaysia. R. I. Alip Integrated Sensor Research Group, Faculty of Electrical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor Malaysia. Growth of zinc oxide (ZnO) nanostructure on seeded indium tin oxide (ITO) via chemical bath deposition were presented in this study. Growth time is believed to have vital role in order to control the physical (morphology), optical and structural characteristics of ZnO nanostructures. Several growth time of ZnO nanostructure were varied (1 H – 3.5 H) as the purpose to investigate its effect towards the growth of ZnO nanostructures, as well as their characteristics. In this study, the influence of growth time was determined using field emission scanning electron microscope (FESEM), ultra-violet visible spectrometer (UV-Vis) and x-ray diffraction (XRD). Based on the results obtained, morphological, optical and structural characteristics of ZnO nanostructure thin films grown at various growth time present different characteristics and properties. According to the results obtained, it is proved that growth time is a vital parameter to control the ZnO nanostructure growing process. ZnO nanostructure morphological changes significantly with the changes of the growing time process. As well as optical properties, the changes of absorbance and transmittance value influence the optical energy band gap of ZnO nanostructure in this study, which is the average value is 3.31 -3.40 eV. The structural characteristic of the ZnO nanostructure also affected significantly with the difference of growth time, where the crystallinity is improved with the longer growth time. 11 30 2019 6891 6896 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5212.118419 https://www.ijrte.org/portfolio-item/D5212118419/ NANO-Electronic Centre (NET), Faculty of Electrical Engineering, Universiti Teknologi MARA, Shah Alam, Selangor Darul Ehsan, Malaysia Raudah Abu Bakar* Nur Syahirah Kamarozaman NANO-Electronic Centre (NET), Faculty of Electrical Engineering, Universiti Teknologi MARA, Shah Alam, Selangor Darul Ehsan, Malaysia Wan Fazlida Hanim Abdullah Integrated Sensors Research Group, Universiti Teknologi MARA, Shah Alam, Selangor Darul Ehsan, Malaysia Sukreen Hana Herman Integrated Sensors Research Group, Universiti Teknologi MARA, Shah Alam, Selangor Darul Ehsan, Malaysia In this work a SPICE model was developed for metal-insulator-metal (MIM)-based memristors. The proposed model was achieved by combining the current conduction mechanisms with the dynamical state variable phenomenon. To account for ionic conduction in memristor, the Mott-Gurney law for ion hopping was incorporated in the state variable derivative. As compared to the experimental data, the proposed model is well matched with the measured data. The memristance and root mean square (RMS) error were calculated to be 120 Ω and 0.02 respectively. Simulating the proposed model at frequencies greater than unity formed a smaller hysteresis loop area. 11 30 2019 6730 6734 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5213.118419 https://www.ijrte.org/portfolio-item/D5213118419/ Faculty of Applied Sciences, University Teknologi MARA, 40450 Shah Alam, Malaysia Z. Mohamed* N. S. Abdullah Faculty of Applied Sciences, University Teknologi MARA, 40450 Shah Alam, Malaysia M. Z. Halizan Faculty of Applied Sciences, University Teknologi MARA, 40450 Shah Alam, Malaysia N. Ibrahim Faculty of Applied Sciences, University Teknologi MARA, 40450 Shah Alam, Malaysia A double perovskites Ba0.5Rb0.5LaTeO6 and Ba0.5Rb0.5La0.9Sm0.1TeO6 were synthesized by a solid-state reaction method. The structural properties were studied by using the X-Ray powder diffraction (XRD) and fourier transform infrared spectroscopy (FTIR). Structural analysis of XRD based on Rietveld refinement indicates that the Ba0.5Rb0.5LaTeO6 and Ba0.5Rb0.5La0.9Sm0.1TeO6 have cubic symmetry with space group Fm m. The tolerance factor of the sample also decreases with Sm3+ substitution. The value obtained from tolerance factor for Ba0.5Rb0.5LaTeO6 and Ba0.5Rb0.5La0.9Sm0.1TeO6 was 0.994 and 0.982 respectively. The optical properties were studied using the UV visible absorption spectroscopy (UV-vis). The Ba0.5Rb0.5LaTeO6 and Ba0.5Rb0.5La0.9Sm0.1TeO6 was assumed to be indirect band gap and the optical band gap obtained for Ba0.5Rb0.5LaTeO6 and Ba0.5Rb0.5La0.9Sm0.1TeO6 were 4.1 eV and 4.3 eV respectively. 11 30 2019 6735 6739 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5214.118419 https://www.ijrte.org/portfolio-item/D5214118419/ Faculty of Plantation and Agrotechnology, Universiti Teknologi MARA, Cawangan Melaka, Kampus Jasin, 77300 Merlimau, Melaka, Malaysia. Khairol Redzuan Mohamad* Muhammad Nuruddin bin Mohd Nor* Faculty of Plantation and Agrotechnology, Universiti Teknologi MARA, Cawangan Melaka, Kampus Jasin, 77300 Merlimau, Melaka, Malaysia. Organic waste is material that is biodegradable and comes from either plant or animal. It can be decomposed over time by microbes into methane, carbon dioxide, water, and other simple organic molecules. Microorganism especially bacteria and fungus are able to decompose cellulose by an enzyme known as cellulase. Since plants are made up from cellulose, this study is focused on isolating and identifying the microbes that are responsible in decomposing the organic waste by screening for the microorganisms that are able to produce cellulose enzyme. In this experiment, the bacteria were isolated from three different samples, which are; compost product, decayed wood and empty fruit bunch mix with oil palm frond. The samples were collected from the fresh decomposing organic waste. The samples undergo serial dilution, screening the ability of the microorganism to solubilize phosphate by using National Botanical Research Institute’s Phosphate media (NBRIP) and screening the ability of the microorganism to produce cellulose enzyme by using Carboxymethyl Cellulose Media (CMC) treated with Congo Red and NaCl for confirmation of the targeted effective microbes. The result shows that the targeted effective microbes will produce the halo zone or clear zone formation after being treated with Red Congo and NaCl solution on CMC media and producing a halo zone on NBRIP media. In this experiment, we manage to isolate and identify the bacteria that is responsible in producing cellulase enzyme and solubilizing phosphate that is known as Streptomyces sanglieri. Application of effective microbes will promote the plant uptake due to its ability in converting the nutrient into available form to the plant. 11 30 2019 6740 6744 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5215.118419 https://www.ijrte.org/portfolio-item/D5215118419/ NANO-ElecTronic Centre (NET), Faculty of Electrical Engineering, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia. N. F. Q. Fahmi M.H. Mamat* NANO-ElecTronic Centre (NET), Faculty of Electrical Engineering, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia. A.S. Zoolfakar NANO-ElecTronic Centre (NET), Faculty of Electrical Engineering, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia. M. Rusop NANO-SciTech Centre (NST), Institute of Science (IOS), Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor A.H.A. Razak Electronic Architecture and Applications (EArA) Research Group, Faculty of Electrical Engineering, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia This paper presents the fabrication process and characterization process of zinc (Zn) doped nickel oxide (NiO) thin film. The main objective of this research is to investigate the electrical and structural properties of Zn-doped NiO thin film using sol-gel spin-coating method. Zn-doped NiO thin film was prepared by using spin-coating method. The samples were prepared at different doping parameters, which are undoped NiO, 0.5 at.% Zn-doped NiO, 1.0 at.% Zn-doped NiO, 1.5 at.% Zn-doped NiO and 2.0 at.% Zn-doped NiO. The studies of structural properties of the samples were conducted by using an X-ray diffraction. The optical properties of the samples were characterized by using ultraviolet-visible spectroscopy. The spectra of transmittance and absorbance of the samples were studied. The humidity sensing properties of the samples were conducted using humidity chamber and sensor measurement system. 11 30 2019 6745 6749 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5216.118419 https://www.ijrte.org/portfolio-item/D5216118419/ Faculty of Chemical Engineering, Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia. N. A Zainuddin* M. F. Rosley. Faculty of Chemical Engineering, Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia. F.I. Anuar Faculty of Chemical Engineering, Universiti Teknologi MARA, Shah Alam Selangor, Malaysia. N. M. Sarwani Faculty of Chemical Engineering, Universiti Teknologi MARA, Shah Alam Selangor, Malaysia. In wastewater plastic recycling processing plant, commonly contain high chemical oxygen demand (COD) concentration. Coagulation-flocculation, adsorption and foam fractionation are the examples of treatment processes that can reduce COD concentration in wastewater. Steel slag can be used as an alternative to remove COD concentration of wastewater adsorption process. Linz-Donawitz (LD) slag can be obtained from steel manufacturing plant. LD slag also contains alkali oxides, porous characteristic, large surface area and contain an easy solid-liquid separation. This research is to study the percentage reduction of COD in wastewater using LD slag as adsorbent. This research will investigate the effect of particle size, dosage amount and contact time between LD slag and COD reduction. From the experiment, the highest percentage COD removal for particle size is 0.2mm, the dosage amount is 6 gram and the contact time is at 60 min. Comparison of COD removal by using coagulation -flocculation, adsorption using activated carbon and adsorption using LD slag processes was done. LD slag can reduce 2% higher of COD compared to activated carbon. LD slag should be invested more in wastewater treatment process. 11 30 2019 6750 6755 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5217.118419 https://www.ijrte.org/portfolio-item/D5217118419/ Faculty of Chemical Engineering, Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia. N. A. Zainuddin* N. S. Sulong Faculty of Chemical Engineering, Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia. N. D. Mohamad Faculty of Chemical Engineering, Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia. Rapid expansion supercritical solution (RESS) is a technology introduced that produces a small solid oil particle with organic solvent free particle. RESS method is a better method compared to the traditional method due to many advantages such are produce clean extraction yields, obtain free solvent traces, environmental friendly and short processing time can be used in various industries such as cosmetic and pharmaceutical. Therefore, RESS technique is applied in order to produce direct solid oil particle from Luecaena leucocephala (L.leucocephala) pods instead of oil. In this study, the operating condition that applied during the RESS process in order to obtain the highest solid oil particle from the L.leucocephala pods sample are extraction temperature of 40 ºC, 45 ºC, 50 ºC, 55 ºC and 60 ºC and extraction pressure of 3000 psi, 4000 psi, 5000 psi, 6000 psi and 7000 psi at the constant extraction time of 40 minutes. The highest yield of L.leucocephala solid oil particles that obtained is about 0.65% at 60 oC and 7000 psi. The major components that obtained from the highest yield are 2,2,3-trimethyldecane, Cyclopentanone, propanoic acid and Cyclobutane, 1,2-diphenyl- by as identified by using Gas Chromatography Mass Spectrometry (GCMS). 11 30 2019 6756 6760 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5218.118419 https://www.ijrte.org/portfolio-item/D5218118419/ Faculty of Civil Engineering, Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia. Zakri Ahmed* Aminuddin Mohd Baki Envirab Services, Bandar Baru Bangi, P.O Box 7866, Pejabat Pos Besar Shah Alam, Selangor, Malaysia. Jurina Jaafar* Faculty of Civil Engineering, Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia. Zulhafizal Othman Faculty of Civil Engineering, Universiti Teknologi MARA Pahang Branch, Jengka Campus, Malaysia and Micropollutant and Pathogen in Water Research (WATERμPath), Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia. Suzana Ramli Faculty of Civil Engineering, Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia. Several methods of wastewater treatment systems are implemented but among these methods activated sludge process is demonstrating process in Malaysia. Fortunately, numbers of studies have been conducted to treat and remove either nitrogen or combined phosphorus and nitrogen resulted in enhancement removal of nutrients worldwide. This research aims to study the current operation in Mawar wastewater treatment plant and monitor the reduction of several parameters. The research also examines the new standard limits of effluents. From the result obtained, the monitoring of Mawar wastewater treatment plant indicates that influent concentration of majority of the parameters were in small. Despite that, the removal efficiency of several parameters was not high. That was basically because to the need of proper maintenance activities. Besides, the concentration of measured parameters in the aeration tank inlet were small. Comparison of Mawar wastewater to the typical composition of untreated domestic sewage indicated that the wastewater in Mawar wastewater treatment plant is classified as weak wastewater. The enhancement of nitrogen removal resulted in Mawar wastewater treatment plant led to decrease the removal efficiency of several parameters. 11 30 2019 6761 6768 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5219.118419 https://www.ijrte.org/portfolio-item/D5219118419/ Faculty of Mechanical Engineering, Universiti Teknologi MARA/Shah Alam, Selangor, Malaysia. Aidah Jumahat* Jamaliah Md Said faculty of Mechanical Enigineering, Universiti Teknologi MARA, Cawangan Johor, Kampus Pasir Gudang, Malaysia. Tengku Faizuddin T Mohd Azmi Faculty of Mechanical Engineering, Universiti Teknologi MARA, 40450 Shah Alam Selangor, Malaysia. Mohamed Adzummar Hakim Abdull Adziz Faculty of Mechanical Engineering, Universiti Teknologi MARA, 40450 Shah Alam Selangor, Malaysia. This study is aimed to evaluate the effect of nanoclay incorporation on wear properties of short glass fiber reinforced polymer (GFRP) composite. Three different nanoclay contents of 1.0, 3.0 and 5.0wt% were dispersed into epoxy resin using a three-roll mill machine. The fibers were dispersed using mechanical mixer machine. Dry sliding and abrasive wear tests were conducted using pin-on-disc and abrasive resistance tribometer, respectively. The tests were conducted under 30N load and at 300rpm speed for 10000m sliding distance. The addition of nanoclay filler in epoxy polymer has shown improvement towards wear properties of GFRP composite, of up to 65% and 45% under dry sliding and abrasive wear resistance, respectively. The nanoclay appears to improve the microstructural strength leading to better load carrying capacity of the composite, advancing its effect as secondary reinforcement to the polymer composite. 11 30 2019 6769 6774 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5220.118419 https://www.ijrte.org/portfolio-item/D5220118419/ MITRANS, Universiti Teknologi MARA, Selangor, Malaysia. Muhammad Akmal Asyraaf Adlan* Nur Farizan Tarudin MITRANS, Universiti Teknologi MARA, Selangor, Malaysia. Nurul Elma Kordi* Faculty of Civil Engineering, Universiti Teknologi MARA, Selangor, Malaysia. Tengku Nurul Aishah Tengku Aziz MITRANS, Universiti Teknologi MARA, Selangor, Malaysia. Order picking is an essential part of the supply chain operation. It forms as much as 55% of the operating cost at any distribution centre, as opposed to shipping, receiving, storage and has a direct impact on the level of customer contentment [1]. The ability to process customer orders quickly and accurately is now an essential part of doing business. In order to improve order picking processes within warehouse, the company must choose an order picking method that is suitable for their business. Therefore, XYZ Combined Distribution Centre (CDC) was implemented DATRIA system to dramatically increase productivity in their order picking process Based on this practices, researcher want to investigate the accuracy of DATRIA system in improving the order picking process at XYZ CDC. There are three factors that have been discussed in this study which are order picker, equipment, and interference. In this study, researcher have used questionnaire and observation as a method of data collection. The questionnaire has been distributed to order pickers at XYZ Distribution Centre and researcher also has looked at the data from order fulfilment report. At the end of this study, recommendations for efficient practicing of this system have been provided. By identifying the factors that could affect the accuracy of DATRIA system, it is easier to come up with various ideas and suggestions in improving the operations that will eventually improve the company’s overall performance besides maintaining a positive image among the customers throughout the nation. 11 30 2019 6775 6780 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5221.118419 https://www.ijrte.org/portfolio-item/D5221118419/ Faculty of Chemical Engineering, Universiti Teknologi MARA, Shah Alam, Malaysia. Norasmah Mohammed Manshor* Junaidah Jai* Faculty of Chemical Engineering, Universiti Teknologi MARA, Shah Alam, Malaysia. Fazlena Hamzah Faculty of Chemical Engineering, Universiti Teknologi MARA, Shah Alam, Malaysia. Noorsuhana Mohd Yusof Faculty of Chemical Engineering, Universiti Teknologi MARA, Shah Alam, Malaysia. Biopolymer film has attracted interest in food preservation and packaging. In order to obtain biopolymer film of good characteristics, rheological properties of film forming solution is important. In this study, the rheological properties of cassava starch film forming solution incorporated with kaffir lime oil were determined. The flow behavior measurement was made at shear rate of 0.1 to 100 s-1 and 25 C, whereas the effect of temperature on viscosity was measured at 25 to 70 C and shear rate of 10 s-1. The flow behavior was well described by power law or Ostwald de Waele model. The film forming solution showed flow behavior index (n) in the range of 0.20 to 0.72 which belonged to a non-Newtonian or pseudoplastic behavior. The shear stress increased with increasing shear rate and temperature. The dependency of temperature on viscosity was described by Arrhenius model which allowed the determination of activation energy (Ea). The Ea of the film forming solutions range between 4.92 to 13.23 kJ mol-1. The rheological properties obtained in this study provide a basis to correlate the film forming solution properties to the characteristics of the produced biopolymer film. 11 30 2019 6781 6786 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5222.118419 https://www.ijrte.org/portfolio-item/D5222118419/ Faculty of Mechanical Engineering Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia. Abdul Malek Abdul Wahab* Zainudin A. Rasid Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia Kuala Lumpur, Malaysia. Norfazrina Hayati Binti Mohd Yatim Department of Mechanical Engineering Kulliyah of Engineering International Islamic University Malaysia Kuala Lumpur, Malaysia. Ahmad Khushairy Makhtar Faculty of Mechanical Engineering Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia. Efficiency improvement that can be provided by the high-speed rotating equipment becomes a concern for designers nowadays. Since the high-speed rotating machinery was capable of rotating at very near to critical speed, the accurate estimation of critical speed needs to be considered. This paper investigated the effect of torsional element towards critical speed of high-speed rotating shaft system for pinned-pinned (P-P), clamped-free (C-F) and clamped-free (C-F) boundaries condition. The Nelson’s finite element model that considers the torsional effect was developed for formulating the finite element (FE) model. This FE model was used to derive Mathieu-Hill’s equation and then solved by applying the Bolotin’s theory. From the solution, the Campbell’s diagram of the high-speed shaft was plotted. It was found that torsional motion has significant effect on the critical speed for different boundary conditions. The difference between critical speed of 4DOF and 5DOF models can be as high as 6.91 %. 11 30 2019 6787 6792 CC-BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true 10.35940/ijrte.D5223.118419 https://www.ijrte.org/portfolio-item/D5223118419/