Portal de Periódicos da CAPES

EFFECTS OF SELECTED REDUCING AGENTS ON MICROBIOLOGICALLY MEDIATED REDUCTIVE DECHLORINATION OF AROCLOR® 1242

1996; Wiley; Volume: 15; Issue: 7 Linguagem: Inglês

10.1897/1551-5028(1996)015 2.3.co;2

1552-8618

Joseph J. McCue, W.K. Gauger, Thomas H. Holsen, Robert L. Kelly, K. Daniel,

Environmental remediation with nanomaterials

Environmental Toxicology and ChemistryVolume 15, Issue 7 p. 1071-1082 Article Effects of selected reducing agents on microbiologically mediated reductive dechlorination of aroclor® 1242 Joseph J. McCue, Corresponding Author Joseph J. McCue Versar, Inc., 200 W. 22nd Street, Suite 250, Lombard, Illinois 60148, USAVersar, Inc., 200 W. 22nd Street, Suite 250, Lombard, Illinois 60148, USASearch for more papers by this authorKennedy W. Gauger, Kennedy W. Gauger Radian Corporation 8501 N. Mopac Boulevard, Austin, Texas 78759, USASearch for more papers by this authorThomas H. Holsen, Thomas H. Holsen Department of Chemical and Environmental Engineering, Illinois Institute of Technology, 10 W. 33rd Street, Chicago, Illinois 60616, USASearch for more papers by this authorRobert L. Kelly, Robert L. Kelly Institute of Gas Technology, 1700 S. Mount Prospect Road, Des Plaines, Illinois 60016, USASearch for more papers by this authorDaniel K. Cha, Daniel K. Cha Department of Civil and Environmental Engineering, University of Delaware, 137 DuPont Hall, Newark, Delaware 19716, USASearch for more papers by this author Joseph J. McCue, Corresponding Author Joseph J. McCue Versar, Inc., 200 W. 22nd Street, Suite 250, Lombard, Illinois 60148, USAVersar, Inc., 200 W. 22nd Street, Suite 250, Lombard, Illinois 60148, USASearch for more papers by this authorKennedy W. Gauger, Kennedy W. Gauger Radian Corporation 8501 N. Mopac Boulevard, Austin, Texas 78759, USASearch for more papers by this authorThomas H. Holsen, Thomas H. Holsen Department of Chemical and Environmental Engineering, Illinois Institute of Technology, 10 W. 33rd Street, Chicago, Illinois 60616, USASearch for more papers by this authorRobert L. Kelly, Robert L. Kelly Institute of Gas Technology, 1700 S. Mount Prospect Road, Des Plaines, Illinois 60016, USASearch for more papers by this authorDaniel K. Cha, Daniel K. Cha Department of Civil and Environmental Engineering, University of Delaware, 137 DuPont Hall, Newark, Delaware 19716, USASearch for more papers by this author First published: July 1996 https://doi.org/10.1002/etc.5620150709Citations: 5AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract The effect of various chemical reducing agents on the anaerobic microbial reductive biotransformation of polychlorinated biphenyls (PCBs) was investigated using Aroclor® 1242 at a concentration of 600 μg/g soil and microorganisms eluted from Hudson River sediments. The investigation sought to determine how various reducing agents influenced PCB dechlorination rates, patterns, and acclimation periods. Three reducing agents were incorporated into culture media: amorphous ferrous sulfide, sodium sulfide with sodium thioglycollate, and sodium sulfide with amorphous ferrous sulfide. All cultures were incubated statically under methanogenic conditions and ambient incubation temperatures of about 20°C. Cultures utilizing both sodium sulfide and ferrous sulfide together demonstrated the most extensive removal of meta- and para-chlorines, the highest average dechlorination rate, the greatest dechlorination of tri- and tetrachlorinated biphenyls, and the greatest accumulation of dichlorobiphenyl homologues. Overall, treatments incorporating ferrous sulfide, alone or in combination with sodium sulfide, demonstrated the ability to more effectively dechlorinate tri-ortho-substituted tetrachlorobiphenyls and pentachlorobiphenyls which had commonly positioned chlorines. Under these same conditions, dichlorobiphenyls, which are more amenable to aerobic dechlorination conditions, increased from 25% (molar basis) initially to levels greater than 60%. Citing Literature Volume15, Issue7July 1996Pages 1071-1082 RelatedInformation