scholarly journals Foodweb modeling for polychlorinated biphenyls (PCBs) in the Twelvemile Creek Arm of Lake Hartwell, South Carolina, USA

2009 ◽  
Vol 220 (2) ◽  
pp. 254-264 ◽  
Author(s):  
Brenda Rashleigh ◽  
M. Craig Barber ◽  
David M. Walters
Keyword(s):  
South Carolina ◽  
Polychlorinated Biphenyls ◽  
Lake Hartwell

Persistence and distribution of PCBs in the sediments of a reservoir (Lake Hartwell, South Carolina)

1989 ◽  
Vol 43 (6) ◽  
pp. 870-878 ◽  
Author(s):  
Frank M. Dunnivant ◽  
Anne L. Polansky ◽  
Alan W. Elzerman
Keyword(s):  
South Carolina ◽  
Lake Hartwell

PCB Congeners and Dechlorination in Sediments of Lake Hartwell, South Carolina, Determined from Cores Collected in 1987 and 1998

2006 ◽  
Vol 40 (1) ◽  
pp. 109-119 ◽  
Author(s):  
Philip A. Bzdusek ◽  
Erik R. Christensen ◽  
Cindy M. Lee ◽  
Usarat Pakdeesusuk ◽  
David L. Freedman
Keyword(s):  
South Carolina ◽  
Pcb Congeners ◽  
Lake Hartwell

scholarly journals Establishment of a Polychlorinated Biphenyl-Dechlorinating Microbial Consortium, Specific for Doubly Flanked Chlorines, in a Defined, Sediment-Free Medium

2000 ◽  
Vol 66 (1) ◽  
pp. 49-53 ◽  
Author(s):  
Qingzhong Wu ◽  
Kevin R. Sowers ◽  
Harold D. May
Keyword(s):  
South Carolina ◽  
Polychlorinated Biphenyls ◽  
Polychlorinated Biphenyl ◽  
Microbial Consortium ◽  
Enrichment Culture ◽  
Estuarine Sediment ◽  
The Other ◽  
Free Medium ◽  
Pcb Congeners ◽  
Carbon Bonds

ABSTRACT Estuarine sediment from Charleston Harbor, South Carolina, was used as inoculum for the development of an anaerobic enrichment culture that specifically dechlorinates doubly flanked chlorines (i.e., chlorines bound to carbon that are flanked on both sides by other chlorine-carbon bonds) of polychlorinated biphenyls (PCBs). Dechlorination was restricted to the para chlorine in cultures enriched with 10 mM fumarate, 50 ppm (173 μM) 2,3,4,5-tetrachlorobiphenyl, and no sediment. Initially the rate of dechlorination decreased upon the removal of sediment from the medium. However, the dechlorinating activity was sustainable, and following sequential transfer in a defined, sediment-free estuarine medium, the activity increased to levels near that observed with sediment. The culture was nonmethanogenic, and molybdate, ampicillin, chloramphenicol, neomycin, and streptomycin inhibited dechlorination activity; bromoethanesulfonate and vancomycin did not. Addition of 17 PCB congeners indicated that the culture specifically removes double flanked chlorines, preferably in the para position, and does not attack ortho chlorines. This is the first microbial consortium shown to para or metadechlorinate a PCB congener in a defined sediment-free medium. It is the second PCB-dechlorinating enrichment culture to be sustained in the absence of sediment, but its dechlorinating capabilities are entirely different from those of the other sediment-free PCB-dechlorinating culture, an ortho-dechlorinating consortium, and do not match any previously published Aroclor-dechlorinating patterns.

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