@article {658,
	title = {Reductive dechlorination of weathered Aroclor 1260 during anaerobic biotreatment of Arctic soils},
	journal = {Canadian Journal of Microbiology},
	volume = {49},
	number = {1},
	year = {2003},
	note = {ISI Document Delivery No.: 654TDTimes Cited: 3Cited Reference Count: 23},
	month = {Jan},
	pages = {9-14},
	type = {Article},
	abstract = {We investigated the microbial reductive dechlorination of both weathered (aged) and nonweathered (freshly added) Aroclor 1260 in aerobic soil from Resolution Island, Nunavut, Canada. Initial polychlorinated biphenyl (PCB) concentrations were 106 and 100 ppm, respectively. The aerobic soil samples were inoculated with anaerobic sediment, incubated at 30degreesC until methanogenic, inoculated with a dechlorinating enrichment culture, and incubated a further 8 weeks. The average number of chlorine substituents per biphenyl molecule was biologically reduced from 6.6 to 5.1 and from 6.2 to 4.5 for weathered and nonweathered Aroclor 1260, respectively. Removal of hexa- and heptachlorobiphenyls (CBs), the major homolog groups present, was significantly greater for nonweathered than for weathered Aroclor 1260. Formation of dechlorination products, primarily 2,2{\textquoteright},4,4{\textquoteright}- and 2,2{\textquoteright},4,6{\textquoteright}-tetraCBs, was also significantly greater for nonweathered than for weathered Aroclor 1260. We additionally compared the dechlorination at 21degreesC of weathered Aroclor 1260 in soils from Resolution Island and Saglek, Labrador, Canada. The average number of chlorine substituents per biphenyl molecule was biologically reduced from 6.7 to 5.1 and from 6.5 to 4.6, respectively. This study demonstrated the potential for bioremediation of aerobic soil contaminated with Aroclor 1260 and showed that weathering may limit such treatment to an extent variable among different soils.},
	keywords = {BIODEGRADATION, bioremediation, META, MICROBIAL DECHLORINATION, MICROORGANISMS, PCB, PCBS, polychlorinated biphenyl, POLYCHLORINATED-BIPHENYLS, SEDIMENTS},
	isbn = {0008-4166},
	url = {<Go to ISI>://000181511400002},
	author = {Kuipers, B. and Cullen, W. R. and Mohn, W. W.}
}
@article {4590,
	title = {Reductive dechlorination of nonachlorobiphenyls and selected octachlorobiphenyls by microbial enrichment cultures},
	journal = {Environmental Science \& Technology},
	volume = {33},
	number = {20},
	year = {1999},
	note = {ISI Document Delivery No.: 248CJTimes Cited: 14Cited Reference Count: 19},
	month = {Oct},
	pages = {3579-3585},
	type = {Article},
	abstract = {The anaerobic dechlorination of four octachlorobiphenyls [2,3,4,5,6,2{\textquoteright},3{\textquoteright},4{\textquoteright}-octachlorobiphenyl (23456-234-octaCB), 2345-2346-octaCB, 2345-2356-octaCB, and 23456-245-octaCB] and three nonachlorobiphenyls [23456-2345-nonaCB, 23456-2346-nonaCB, and 23456-2356-nonaCB] was investigated. The single congeners were added to two different previously studied microbial enrichment cultures, and the cultures were monitored over a period of 16 weeks. All seven congeners were reductively dechlorinated. The predominant dechlorination patterns for all congeners, in both cultures, showed meta-dechlorination of doubly flanked m-chlorines followed by meta-dechlorination of singly flanked m-chlorines. Some ortho- and para-dechlorination was also observed. All congeners had an initial concentration of 50 ppm in soil, and the extent of dechlorination over the 16-week period varied widely, from 38\% dechlorination of congener 23456-245-octaCB to only 1.4\% removal of congener 23456-2345-nonaCB.},
	keywords = {ANAEROBIC MICROORGANISMS, AROCLORS, CONGENERS, DECHLORINATION, ESTUARINE SEDIMENTS, POLYCHLORINATED-BIPHENYLS, REDUCTIVE, SLURRIES},
	isbn = {0013-936X},
	url = {<Go to ISI>://000083257500016},
	author = {Kuipers, B. and Cullen, W. R. and Mohn, W. W.}
}
