Download or read book Biostimulation of Polychlorinated Biphenyl pcb Dechlorination in Sediments of Escambia Bay Florida written by Brittany Elise Young and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Polychlorinated biphenyls (PCBs) contaminate the sediments of Escambia Bay in Pensacola, Florida. Given the right conditions anaerobic bacteria in sediments are capable of degrading PCBs by dechlorinating the molecule. The objective of this study is to assess, in the laboratory, conditions that may stimulate the naturally occurring bacteria in Escambia Bay to degrade the PCBs. The study may have implications for in situ treatment of contaminated sediments like these in Escambia Bay. Sediments were treated with three different electron donors (pyruvate, iron sulfide and elemental iron) that would stimulate the microbes to use the PCBs as an electron acceptor. Each treatment was tested in triplicate and allowed to dechlorinate for five months in an anaerobic environment. After five months, all three treatments resulted in a decrease in PCB concentration in sediment spiked with 2,3'4,4'5-pentachlorobiphenyl (congener 118) and in sediment spiked with Aroclor 1254. Unspiked PCB contaminated sediments showed a less consistent decrease in total PCB concentration for the various treatments. These results show that the bacteria found in Escambia Bay sediments can be stimulated to remediate the PCB contamination. Further research could develop this method into a viable in situ remediation strategy to address the contamination in Escambia Bay.
Download or read book Polychlorinated Biphenyls PCB written by United States. Congress. House. Committee on Merchant Marine and Fisheries. Subcommittee on Fisheries and Wildlife Conservation and the Environment and published by . This book was released on 1976 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dechlorination of Polychlorinated Biphenyls in Bioaugmented and Biostimulated Freshwater Sediments written by Lloyd Jarret Winchell and published by . This book was released on 2005 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rates of Microbial Dechlorination of Polychlorinated Biphenyls PCBs in Anaerobic Sediments from Waukegan Harbor by J B Risatti Prepared for the Illinois Hazardous Waste Research and Information Center written by James Bruno Risatti and published by . This book was released on 1992 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization of PCB polychlorobiphenyl Dechlorination by Anaerobic Microorganisms from Hudson River Sediments written by Dingyi Ye and published by . This book was released on 1994 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enrichment of Microbial Reductive Dechlorination of Polychlorinated Biphenyls in Sediments written by Tao Yan and published by . This book was released on 2004 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Anaerobic Dechlorination of Polychlorinated Biphenyls in Aquatic Sediments written by Matthew B. Hollifield and published by . This book was released on 1993 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reductive Dechlorination of Polychlorinated Biphenyls PCBS in Marine Harbor Sediments written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the first time reductive dechlorination of PCBs was shown to occur in marine and estuarine microcosms from sites with ambient temperatures below 10 degrees centigrade. It was shown that the types of activities are influenced by the location of the site and the ambient temperature. In addition, it is now clear that non-indigenous dechlorinating organisms can be added to sediments microcosms to dechlorinate PCBs. These studies suggest that reductive dechlorination of PCBs has the potential to occur in coastal regions with lower ambient temperatures. The result also suggest that active biotreatment of PCB impacted dredge spoils by augmentation may be possible in colder climates.
Download or read book Microbial Reductive Dechlorination of Polychlorinated Biphenyls PCBs in Anaerobic Freshwater Sediments written by Qingzhong Wu and published by . This book was released on 1996 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enhancement of Site Specific Anaerobic Reductive Dechlorination of Polychlorinated Biphenyls written by Matthew John Zwiernik and published by . This book was released on 1998 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microbial catalyzed Reductive Dechlorination of Polychlorinated Biphenyl PCBs in Hudson and Grasse River Sediment shifts of Microorganisms PCB Tracker Pairs and Geochemical Properties written by Yan Xu and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Collaborative Research Microbal Reductive Dechlorination of Polychlorinated Biphenyls PCBs in Estuarine and Marine Coastal Sediments written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: For many years researchers have tried to identify and monitor PCB dechlorinating bacteria. Strains o-17 and DF-1 are the first PCB dechlorinating bacteria to be identified. These organisms have proven to be very difficult to grow in pure culture thus far. However, for the first time molecular approaches (165 rDNA analysis) has ben combined with enrichment culture technique to identify these organisms. This is a significant breakthrough that will advance the application of bioremediation and it proves that such an approach can be used to identify difficult to culture environmental microorganisms, which is to say most microorganisms. Now for the first time these organisms can be monitored in order to better understand their physiology and to track the organisms in situ, before, during and after active and passive remediation attempts.
Download or read book Reductive Dechlorination of Polychlorinated Biphenyls in Marine Sediments written by and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Partial Contents: Reductive Dechlorination of Polychlorinated Biphenyls in Marine Sediments, Microbial Dechlorination of 2,3,5,6-Tetrachlorobiphenyl under Anaerobic Conditions in the Absence of Soil or Sediment, Anaerobic ortho Dechlorination of Polychlorinated Biphenyls by Estuarine Sediments from Baltimore Harbor, Characterization of a Defined 2,3,5,6-Tetrachlorobiphenyl-ortho- Dechlorinating Microbial Community by Comparative Sequence Analysis of Genes Coding for 16S rRNA, Microbial Reductive Dechlorination of Aroclor 1260 in Anaerobic Slurries of Estuarine Sediments, Differential RFLP patterns of PCR-amplified 16S rDNA from anaerobic PCB-dechlorinating estuarine and marine sediment enrichments, . Site-Dependence of ortho, meta, and para Dechlorination of PCBs by Anaerobic Estuarine and Marine Sediment Enrichments.
Download or read book Determination Mobilization and Dechlorination of Polychlorinated Biphenyl PCB Compounds in Contaminated Soils written by Qixiang Wu and published by . This book was released on 2001 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Determination of Polychlorinated Biphenyls PCBs in Sediment and Biota written by Lynda Webster and published by . This book was released on 2013 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Factors Influencing the Development of a Biostimulant for the In Situ Anaerobic Dechlorination of Polychlorinated Biphenyls in Fox River Wisconsin Sediments written by WC. Boyle and published by . This book was released on 1995 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polychlorinated biphenyl (PCB) contaminated sediments were collected from the Fox River, Wisconsin, and analyzed for the possible occurrence of reductive dechlorination. Evidence of in-situ dechlorination was observed. However, the extent of this in-situ dechlorination was less than that typically reported in the literature, suggesting that stimulation of further dechlorination was possible.
Download or read book Bioremediation written by Ronald L. Crawford and published by Cambridge University Press. This book was released on 1996-11-21 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increased industrial and agricultural activity this century has led to vast quantities of the earth's soil and groundwater resources becoming contaminated with hazardous chemicals. Bioremediation provides a technology based on the use of living organisms, usually bacteria and fungi, to remove pollutants from soil and water, preferably in situ. This approach, which is potentially more cost-effective than traditional techniques such as incineration of soils and carbon filtration of water, requires an understanding of how organisms transform chemicals, how they survive in polluted environments and how they should be employed in the field. This book examines these issues for many of the most serious and common environmental contaminants, resulting in a volume which presents the most recent position on the application of bioremediation to the cleanup of polluted soil and water.
