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Bioremediation of PCDD/Fs-contaminated municipal solid waste incinerator fly ash by a potent microbial biocatalyst SCIE SCOPUS

Title
Bioremediation of PCDD/Fs-contaminated municipal solid waste incinerator fly ash by a potent microbial biocatalyst
Authors
Nam, IHKim, YMMurugesan, KJeon, JRChang, YYChang, YS
Date Issued
2008-08-30
Publisher
ELSEVIER SCIENCE BV
Abstract
Removal of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) from fly ash poses a serious problem. In the study presented here, we used a microbial biocatalyst which is a mixture of 4 bacterial and 5 fungal dioxin-degrading strains. The ability of this biocatalyst to bioremediate PCDD/Fs from contaminated municipal solid waste incinerator (MSWI) fly ash was examined by solid-state fermentation under laboratory conditions. Treatment of MSWI fly ash with the microbial biocatalyst for 21 days resulted in a 68.7% reduction in total toxic PCDD/Fs. Further analyses revealed that the microbial biocatalyst also removed 66.8% of the 2,3,7,8-substituted congeners from the fly ash. During the treatment period, the presence of the individual strains composing the microbial biocatalyst was monitored by the amplification of strain-specific DNA sequences followed by denaturing gradient gel electrophoresis (DGGE). This analysis showed that all of the bacterial and fungal strains composing this dioxin-degrading microbial mixture maintained under the dioxin treatment conditions. These results demonstrate that this microbial biocatalyst could potentially be used in the bioremediation of PCDD/Fs from contaminated fly ash. (c) 2008 Elsevier BX All rights reserved.
Keywords
bioremediation; PCDD/Fs (polychlorinated dibenzo-p-dioxins and dibenzofurans); incinerator fly ash; microbial biocatalysts; DGGE (denaturing gradient gel electrophoresis) analysis; DIBENZO-P-DIOXINS; SP STRAIN RW1; POLYCYCLIC AROMATIC-HYDROCARBONS; SPHINGOMONAS-WITTICHII RW1; WHITE-ROT FUNGUS; PHANEROCHAETE-CHRYSOSPORIUM; POLYCHLORINATED DIBENZOFURANS; ESTUARINE SEDIMENTS; CHLORINATED DIOXINS; BACILLUS-PUMILUS
URI
https://oasis.postech.ac.kr/handle/2014.oak/22592
DOI
10.1016/j.jhazmat.2007.12.086
ISSN
0304-3894
Article Type
Article
Citation
JOURNAL OF HAZARDOUS MATERIALS, vol. 157, no. 1, page. 114 - 121, 2008-08-30
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장윤석CHANG, YOON-SEOK
Div of Environmental Science & Enginrg
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