Removal of Halogens from Pyrolysis Oils Produced by Plastics Containing Flame Retardants
Takaaki Wajima1, Zar Zar Hlaing2, Akiko Saito3, Hideki Nakagomel3
1Takaaki Wajima, Department of Urban Environment Systems, Chiba University, Chiba, Japan.
2Dr. Zar Zar Hlaing, Department of Urban Environment Systems, Chiba University, Chiba, Japan.
3Dr. Akiko Saito, Department of Urban Environment Systems, Chiba University, Chiba, Japan Prof. Hideki Nakagome , Department of Urban Environment Systems, Chiba University, Chiba, Japan.
Manuscript received on 23 May 2015 | Revised Manuscript received on 30 May 2015 | Manuscript published on 30 May 2015 | PP: 55-59 | Volume-4 Issue-2, May 2015 | Retrieval Number: B1421054215©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Plastics containing brominated flame retardants are commonly used in electrical and electronic products, and disposal or recycle of these products is difficult because of their halogen content. In this study, brominated acrylonitrile butadiene styrene (Br-ABS) was pyrolyzed at 450 °C. The halogen content in the product oil was reduced by addition of sodium hydroxide (NaOH) and pine charcoal. The mass fraction of bromine in the oil obtained without the NaOH or charcoal was 3.2 %, whereas those in the oils obtained with NaOH and charcoal were 1.74 % and 1.25 %, respectively. Using both NaOH and charcoal, the bromine mass fraction in the oil was reduced to 0.6 %. Combustion tests were used to determine the colorific values of pyrolysis oils with various bromine contents, and any corrosion that could limit their use as an alternative fuel was evaluated after these tests. Pyrolysis oil with a bromine content of less than 2000 mg/L could be used as fuel without corrosion.
Keyword: Charcoal, Halogen, Pyrolysis oil, Sodium Hydroxid.
Scope of the Article: Bio-Science and Bio-Technology