Suppressing effect of goethite on PCDD/F and HCB emissions from plastic materials incineration
SCIE
SCOPUS
- Title
- Suppressing effect of goethite on PCDD/F and HCB emissions from plastic materials incineration
- Authors
- Jin, GZ; Lee, SJ; Kang, JH; Chang, YS; Chang, YY
- Date Issued
- 2008-02
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Abstract
- Polyethylene (PE) and polyvinyl chloride (PVC) are the leading plastics in total production in the world. The incineration of plasticbased materials forms many chlorinated compounds, such as polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs). In this study the addition of goethite (alpha-FeOOH) was investigated to determine its suppressing effect on the emission of PCDD/Fs and hexachlorobenzene (HCB) during the combustion of wastes containing PE and PVC. Goethite was being considered since it acts as a dioxin-suppressing catalyst during incineration. Results showed that incorporation of goethite greatly reduced the generation of PCDD/Fs and HCB in the exhaust gas and fly ash. The concentration of PCDD/Fs in flue gas decreased by 45% for lab-scale and 52% for small incinerator combustion experiments, where the goethite ratios in feed samples were 0.54% and 0.34%, respectively. Under the same conditions, the concentration of HCB in flue gas decreased by 88% and 62%, respectively. The present study showed a possible mechanism of the suppressing effect of the goethite for PCDD/F formation. It is likely that iron chlorides react with particulate carbon to form organo-chlorine compounds and promote PCDD/F formation in the gas phase. XRD analysis of combustion ash revealed that the goethite was partially dehydrated and converted to alpha-Fe2O3 and Fe3O4 but no iron chlorides formation. Therefore the goethite impregnated plastics can contribute the reduction of PCDD/Fs and HCB in the exhaust gas during incineration of MSW. (c) 2007 Elsevier Ltd. All rights reserved.
- Keywords
- PCDD/Fs; HCB; plastic; goethite; incineration; IRON-OXIDE CATALYST; DIBENZO-P-DIOXINS; FLUE-GAS; INDICATOR PARAMETERS; WASTE INCINERATORS; DESTRUCTION; COMBUSTION; POLYETHYLENE; FACILITIES; CHLORIDES
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/22920
- DOI
- 10.1016/j.chemosphere.2007.08.059
- ISSN
- 0045-6535
- Article Type
- Article
- Citation
- CHEMOSPHERE, vol. 70, no. 9, page. 1568 - 1576, 2008-02
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