Anaerobic biodegradation of pentachlorophenol in mixtures containing cadmium by two physiologically distinct microbial enrichment cultures
Anaerobic biodegradation of pentachlorophenol (PCP), in mixtures containing cadmium (Cd), by sulfidogenic (SRB) and methanogenic (MET) enrichment cultures, was studied. Removal of 91-93% of PCP occurred in both SRB- and MET-enriched cultures, in the absence of Cd, within 82 days. The presence of sol...
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| Veröffentlicht in: | Journal of industrial microbiology & biotechnology 2001-07, Vol.27 (1), p.11-17 |
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| creator | Kamashwaran, S R Crawford, D L |
| description | Anaerobic biodegradation of pentachlorophenol (PCP), in mixtures containing cadmium (Cd), by sulfidogenic (SRB) and methanogenic (MET) enrichment cultures, was studied. Removal of 91-93% of PCP occurred in both SRB- and MET-enriched cultures, in the absence of Cd, within 82 days. The presence of soluble Cd initially decreased the rate of PCP removal by the enrichment cultures, but PCP removal rates improved as the Cd precipitated. GC-MS, 14C-PCP, and 13C-PCP studies confirmed mineralization of PCP by both enrichment cultures, as well as the incorporation of PCP carbon into specific phospholipid fatty acids (PLFAs) of the cell membranes of PCP-degrading anaerobes. This is the first report on anaerobic biodegradation of PCP by SRB- and MET-enriched cultures in the presence, with simultaneous precipitation, of the toxic heavy metal Cd, and of the incorporation of PCP carbons into specific PLFAs of the anaerobic bacterial cells. |
| doi_str_mv | 10.1038/sj.jim.7000153 |
| format | Article |
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Removal of 91-93% of PCP occurred in both SRB- and MET-enriched cultures, in the absence of Cd, within 82 days. The presence of soluble Cd initially decreased the rate of PCP removal by the enrichment cultures, but PCP removal rates improved as the Cd precipitated. GC-MS, 14C-PCP, and 13C-PCP studies confirmed mineralization of PCP by both enrichment cultures, as well as the incorporation of PCP carbon into specific phospholipid fatty acids (PLFAs) of the cell membranes of PCP-degrading anaerobes. This is the first report on anaerobic biodegradation of PCP by SRB- and MET-enriched cultures in the presence, with simultaneous precipitation, of the toxic heavy metal Cd, and of the incorporation of PCP carbons into specific PLFAs of the anaerobic bacterial cells.</description><identifier>ISSN: 1367-5435</identifier><identifier>EISSN: 1476-5535</identifier><identifier>DOI: 10.1038/sj.jim.7000153</identifier><identifier>PMID: 11598805</identifier><language>eng</language><publisher>Germany: Oxford University Press</publisher><subject>Anaerobic biodegradation ; Anaerobiosis ; Bacteria ; Biochemistry ; Biodegradation ; Biodegradation, Environmental ; Bioremediation ; Biotechnology ; Cadmium ; Cadmium - metabolism ; Carbon ; Culture Media ; Euryarchaeota - growth & development ; Euryarchaeota - metabolism ; Fatty acids ; Heavy metals ; Incorporation ; Methane - metabolism ; Microbiology ; Mineralization ; Molecular biology ; Pentachlorophenol ; Pentachlorophenol - metabolism ; Physiology ; Sludge ; Studies ; Sulfides - metabolism ; Sulfur-Reducing Bacteria - growth & development ; Sulfur-Reducing Bacteria - metabolism ; Toxicity ; Wood preservatives</subject><ispartof>Journal of industrial microbiology & biotechnology, 2001-07, Vol.27 (1), p.11-17</ispartof><rights>Society for Industrial Microbiology 2001</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c455t-c9afc8ca95c0308a07daa9c032ef1b9866dbb567b4cb749635b8c67e732f75523</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27903,27904</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/11598805$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Kamashwaran, S R</creatorcontrib><creatorcontrib>Crawford, D L</creatorcontrib><title>Anaerobic biodegradation of pentachlorophenol in mixtures containing cadmium by two physiologically distinct microbial enrichment cultures</title><title>Journal of industrial microbiology & biotechnology</title><addtitle>J Ind Microbiol Biotechnol</addtitle><description>Anaerobic biodegradation of pentachlorophenol (PCP), in mixtures containing cadmium (Cd), by sulfidogenic (SRB) and methanogenic (MET) enrichment cultures, was studied. Removal of 91-93% of PCP occurred in both SRB- and MET-enriched cultures, in the absence of Cd, within 82 days. The presence of soluble Cd initially decreased the rate of PCP removal by the enrichment cultures, but PCP removal rates improved as the Cd precipitated. GC-MS, 14C-PCP, and 13C-PCP studies confirmed mineralization of PCP by both enrichment cultures, as well as the incorporation of PCP carbon into specific phospholipid fatty acids (PLFAs) of the cell membranes of PCP-degrading anaerobes. This is the first report on anaerobic biodegradation of PCP by SRB- and MET-enriched cultures in the presence, with simultaneous precipitation, of the toxic heavy metal Cd, and of the incorporation of PCP carbons into specific PLFAs of the anaerobic bacterial cells.</description><subject>Anaerobic biodegradation</subject><subject>Anaerobiosis</subject><subject>Bacteria</subject><subject>Biochemistry</subject><subject>Biodegradation</subject><subject>Biodegradation, Environmental</subject><subject>Bioremediation</subject><subject>Biotechnology</subject><subject>Cadmium</subject><subject>Cadmium - metabolism</subject><subject>Carbon</subject><subject>Culture Media</subject><subject>Euryarchaeota - growth & development</subject><subject>Euryarchaeota - metabolism</subject><subject>Fatty acids</subject><subject>Heavy metals</subject><subject>Incorporation</subject><subject>Methane - metabolism</subject><subject>Microbiology</subject><subject>Mineralization</subject><subject>Molecular biology</subject><subject>Pentachlorophenol</subject><subject>Pentachlorophenol - metabolism</subject><subject>Physiology</subject><subject>Sludge</subject><subject>Studies</subject><subject>Sulfides - metabolism</subject><subject>Sulfur-Reducing Bacteria - growth & development</subject><subject>Sulfur-Reducing Bacteria - metabolism</subject><subject>Toxicity</subject><subject>Wood 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Biotechnol</addtitle><date>2001-07-01</date><risdate>2001</risdate><volume>27</volume><issue>1</issue><spage>11</spage><epage>17</epage><pages>11-17</pages><issn>1367-5435</issn><eissn>1476-5535</eissn><abstract>Anaerobic biodegradation of pentachlorophenol (PCP), in mixtures containing cadmium (Cd), by sulfidogenic (SRB) and methanogenic (MET) enrichment cultures, was studied. Removal of 91-93% of PCP occurred in both SRB- and MET-enriched cultures, in the absence of Cd, within 82 days. The presence of soluble Cd initially decreased the rate of PCP removal by the enrichment cultures, but PCP removal rates improved as the Cd precipitated. GC-MS, 14C-PCP, and 13C-PCP studies confirmed mineralization of PCP by both enrichment cultures, as well as the incorporation of PCP carbon into specific phospholipid fatty acids (PLFAs) of the cell membranes of PCP-degrading anaerobes. This is the first report on anaerobic biodegradation of PCP by SRB- and MET-enriched cultures in the presence, with simultaneous precipitation, of the toxic heavy metal Cd, and of the incorporation of PCP carbons into specific PLFAs of the anaerobic bacterial cells.</abstract><cop>Germany</cop><pub>Oxford University Press</pub><pmid>11598805</pmid><doi>10.1038/sj.jim.7000153</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Anaerobic biodegradation Anaerobiosis Bacteria Biochemistry Biodegradation Biodegradation, Environmental Bioremediation Biotechnology Cadmium Cadmium - metabolism Carbon Culture Media Euryarchaeota - growth & development Euryarchaeota - metabolism Fatty acids Heavy metals Incorporation Methane - metabolism Microbiology Mineralization Molecular biology Pentachlorophenol Pentachlorophenol - metabolism Physiology Sludge Studies Sulfides - metabolism Sulfur-Reducing Bacteria - growth & development Sulfur-Reducing Bacteria - metabolism Toxicity Wood preservatives |
| title | Anaerobic biodegradation of pentachlorophenol in mixtures containing cadmium by two physiologically distinct microbial enrichment cultures |
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