scholarly journals Effects of Ferric Oxyhydroxide on Anaerobic Microbial Dechlorination of Polychlorinated Biphenyls in Hudson and Grasse River Sediment Microcosms: Dechlorination Extent, Preferences, Ortho Removal, and Its Enhancement

2018 ◽  
Vol 9 ◽  
Author(s):  
Yan Xu ◽  
Kelvin B. Gregory ◽  
Jeanne M. VanBriesen
Keyword(s):  
Polychlorinated Biphenyls ◽  
River Sediment ◽  
Ferric Oxyhydroxide ◽  
Microbial Dechlorination

Biological activity associated with noncoplanar polychlorinated biphenyls after microbial dechlorination of aroclor 1242® and aroclor 1254®

2000 ◽  
Vol 19 (5) ◽  
pp. 1311-1316 ◽  
Author(s):  
Patricia E. Ganey ◽  
John F. Quensen ◽  
Mahmoud A. Mousa ◽  
Stephen A. Boyd ◽  
Margaret A. Wagner ◽  
...  
Keyword(s):  
Biological Activity ◽  
Polychlorinated Biphenyls ◽  
Aroclor 1254 ◽  
Aroclor 1242 ◽  
Microbial Dechlorination

scholarly journals Potential risk reduction of Aroclor 1254 by microbial dechlorination in anaerobic Grasse River sediment microcosms

2017 ◽  
Vol 321 ◽  
pp. 879-887 ◽  
Author(s):  
Devrim Kaya ◽  
Ipek Imamoglu ◽  
F. Dilek Sanin ◽  
Rayford B. Payne ◽  
Kevin R. Sowers
Keyword(s):  
Risk Reduction ◽  
Potential Risk ◽  
River Sediment ◽  
Aroclor 1254 ◽  
Microbial Dechlorination

Dechlorination of polychlorinated biphenyls by Hudson River sediment organisms: specificity to the chlorination pattern of congeners

1993 ◽  
Vol 27 (6) ◽  
pp. 1190-1192 ◽  
Author(s):  
G. Yull Rhee ◽  
Roger C. Sokol ◽  
Charlotte M. Bethoney ◽  
Brian Bush
Keyword(s):  
Polychlorinated Biphenyls ◽  
River Sediment ◽  
Hudson River

scholarly journals Brominated Biphenyls Prime Extensive Microbial Reductive Dehalogenation of Aroclor 1260 in Housatonic River Sediment

1998 ◽  
Vol 64 (5) ◽  
pp. 1786-1795 ◽  
Author(s):  
Donna L. Bedard ◽  
Heidi Van Dort ◽  
Kim A. Deweerd
Keyword(s):  
Polychlorinated Biphenyls ◽  
River Sediment ◽  
Reductive Dehalogenation ◽  
Major Step ◽  
Anaerobic Microorganisms ◽  
Pcb Congeners ◽  
Naturally Occurring ◽  
Chlorine Removal ◽  
Pcb Dechlorination

ABSTRACT The upper Housatonic River and Woods Pond (Lenox, Mass.), a shallow impoundment on the river, are contaminated with polychlorinated biphenyls (PCBs), the residue of partially dechlorinated Aroclor 1260. Certain PCB congeners have the ability to activate or “prime” anaerobic microorganisms in Woods Pond sediment to reductively dehalogenate the Aroclor 1260 residue. We proposed that brominated biphenyls might have the same effect and tested the priming activities of 14 mono-, di-, and tribrominated biphenyls (350 μM) in anaerobic microcosms of sediment from Woods Pond. All of the brominated biphenyls were completely dehalogenated to biphenyl, and 13 of them primed PCB dechlorination. Measured in terms of chlorine removal and decrease in the proportion of hexa- through nonachlorobiphenyls, the microbial PCB dechlorination primed by several brominated biphenyls was nearly twice as effective as that primed by chlorinated biphenyls. Congeners containing a meta bromine primed Dechlorination Process N (flanked meta dechlorination), and congeners containing an unflanked para bromine primed Dechlorination Process P (flanked para dechlorination). Twoortho-substituted congeners, 2-bromobiphenyl and 2,6-dibromobiphenyl (2-BB and 26-BB), also primed Process N dechlorination. The most effective primers were 26-BB, 245-BB, 25-3-BB, and 25-4-BB. The microbial dechlorination primed by 26-BB converted ∼75% of the hexa- through nonachlorobiphenyls to tri- and tetrachlorobiphenyls in 100 days and removed ∼75% of the PCBs that are most persistent in humans. These results represent a major step toward identifying an effective method for accelerating PCB dechlorination in situ. The challenge now is to identify naturally occurring compounds that are safe and effective primers.

Reductive Microbial Dechlorination of Indigenous Polychlorinated Biphenyls in Soil Using a Sediment-Free Inoculum

1996 ◽  
Vol 12 (3) ◽  
pp. 310-315 ◽  
Author(s):  
K.T. Klasson ◽  
J.W. Barton ◽  
B.S. Evans ◽  
M.E. Reeves
Keyword(s):  
Polychlorinated Biphenyls ◽  
Microbial Dechlorination

Analysis of Persistent Organic Pollutants in Sediments of the Wanzhou Section of the Yangtze River

2012 ◽  
Vol 518-523 ◽  
pp. 2352-2355
Author(s):  
Jun Sheng Qi ◽  
Yu Ling Wang ◽  
Chuan Fu ◽  
Kun Xie
Keyword(s):  
Polychlorinated Biphenyls ◽  
Organochlorine Pesticides ◽  
Industrial Wastewater ◽  
Yangtze River ◽  
River Sediment ◽  
Water Environment ◽  
The Yangtze River ◽  
Point Source Pollution ◽  
The Impact ◽  
Direct Discharge

Organochlorine pesticides and polychlorinated biphenyls content can be obtained By measuring Wanzhou of the Yangtze River and Wanzhou Zhuxi River in sediment : Sediment content of organochlorine pesticides and polychlorinated biphenyls are increased the river down. Organochlorine pesticides in sediments are β-HCH> δ-HCH> α-HCH> γ-HCH, and pp'-DDE> pp '-DDD> op'-DDT> pp'-DDT. Organochlorine pesticides and PCBs of Wanzhou of the Yangtze River sediment in the distribution of the sampling points are similar characteristics. The main source of pollution is the direct discharge of industrial wastewater, agricultural pollution and soil erosion of farmland. Although OCPs and PCBs in water environment are very low, the impact on human health can not be ignored. Therefore certain measures are taken to clean emissions from industrial wastewater and agricultural non-point source pollution control.

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