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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제18권 제10호
- 발행연도
- 2008.1
- 수록면
- 1,701 - 1,708 (8page)
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초록· 키워드
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Previous investigations showed that three classes of
haloaromatic compounds (HACs; chlorobenzoates,
chlorophenols, and chlorobenzenes) enhanced the reductive
dechlorination of Aroclor 1248, judging from the overall
extent of reduction in Cl atoms on the biphenyl. In the
present study, we further investigated the kind of
polychlorinated biphenyl (PCB) congeners involved in the
enhanced dechlorination by four isomers belonging to
each class (2,3-, 2,5-, 2,3,5-, and 2,4,6-chlorobenzoates;
2,3-, 3,4-, 2,5-, and 2,3,6-chlorophenols; and 1,2-, 1,2,3-,
1,2,4-, and penta-chlorobenzenes). Although the PCB
congeners involved in the enhanced dechlorination varied
with the HACs, the enhancement primarily involved paradechlorination
of the same congeners (2,3,4'-, 2,3,4,2'-
plus 2,3,6,4'-, 2,5,3',4'- plus 2,4,5,2',6'-, and 2,3,6,2',4'-
chlorobiphenyls), regardless of the HACs. These congeners
are known to have low threshold concentrations for
dechlorination. To a lesser extent, the enhancement also
involved meta dechlorination of certain congeners with
high threshold concentrations. There was no or less
accumulation of 2,4,4'- and 2,5,4'-chlorobiphenyls as
final products under HAC amendment. Although the
dechlorination products varied, the accumulation of orthosubstituted
congeners, 2-, 2,2'-, and 2,6-chlorobiphenyls,
was significantly higher with the HACs, indicating a more
complete dechlorination of the highly chlorinated congeners.
Therefore, the present results suggest that the enhanced
dechlorination under HAC enrichment is carried out through
multiple pathways, some of which may be universal,
regardless of the kind of HACs, whereas others may be
HAC-specific.
목차
등록된 정보가 없습니다.
참고문헌 (16)
참고문헌 신청
Balch, W. E. / 1979 / Methanogens: Reevaluation of a unique biological group / Microbiol. Rev 43 : 260 ~ 296
Chang, B. V. / 1999 / Dechlorination of polychlorinated biphenyls by an anaerobic mixed culture. J. Environ / Sci. Health A 34 : 1299 ~ 1316
Cho, Y.-C. / 1248 / Reductive dechlorination of polychlorinated biphenyls: Threshold concentration and dechlorination kinetics of individual congeners in Aroclor 1248. Enviro
Cho, Y.-C. / 2002 / Enhancement of microbial PCB dechlorinationby chlorobenzoates, chlorophenols and chlorobenzenes. FEMS Microbiol / Ecol 42 : 51 ~ 58
Erickson, M. D. / 1997 / Analytical Chemistry of PCBs,pp.17-96.2nd Ed.CRC Press,Boca Raton,Florida / CRC Press : 17 ~ 96
Chang, B. V. / 1999 / Dechlorination of polychlorinated biphenyls by an anaerobic mixed culture. J. Environ / Sci. Health A 34 : 1299 ~ 1316
Cho, Y.-C. / 1248 / Reductive dechlorination of polychlorinated biphenyls: Threshold concentration and dechlorination kinetics of individual congeners in Aroclor 1248. Enviro
Cho, Y.-C. / 2002 / Enhancement of microbial PCB dechlorinationby chlorobenzoates, chlorophenols and chlorobenzenes. FEMS Microbiol / Ecol 42 : 51 ~ 58
Erickson, M. D. / 1997 / Analytical Chemistry of PCBs,pp.17-96.2nd Ed.CRC Press,Boca Raton,Florida / CRC Press : 17 ~ 96
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