Rhizospere Redox Cycling and Implications for Rhizosphere Biotransformation of Selected Polychlorinated Biphenyl (PCB) Congeners.
Identifieur interne : 002501 ( Main/Exploration ); précédent : 002500; suivant : 002502Rhizospere Redox Cycling and Implications for Rhizosphere Biotransformation of Selected Polychlorinated Biphenyl (PCB) Congeners.
Auteurs : Richard E. Meggo [République populaire de Chine] ; Jerald L. Schnoor [États-Unis]Source :
- Ecological engineering [ 0925-8574 ] ; 2013.
Abstract
Theoretically, sequential cycles of dechlorination followed by aerobic bio-oxidation are desirable to achieve complete degradation of a mixture of higher and lower chlorinated PCBs. In this research, soil was artificially contaminated with polychlorinated biphenyls (PCBs) in mixture and as single congeners, aged, and planted with two different plant species. Alternating redox cycles were created in the root zone of plants by flooding and draining the soil. Over 32 weeks, switchgrass (Panicum virgatum) and poplar (Populus deltoids x nigra DN34) planted systems that were exposed to alternate cycles of flooding performed better in reducing parent PCBs than planted systems that were not cycled (p<0.05). The cycled systems also had a higher mass of PCB transformation products than the uncycled systems. Multiple cycles were necessary to achieve significant differences between the cycled and uncycled treatments.
DOI: 10.1016/j.ecoleng.2013.04.052
PubMed: 24860241
PubMed Central: PMC4028954
Affiliations:
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Meggo</name><affiliation wicri:level="4"><nlm:affiliation>Department of Civil and Environmental Engineering, 4105 Seamans Center, University of Iowa, IA, 52242, USA, ;</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Department of Civil and Environmental Engineering, 4105 Seamans Center, University of Iowa, IA, 52242, USA</wicri:regionArea><orgName type="university">Université de l'Iowa</orgName><placeName><settlement type="city">Iowa City</settlement><region type="state">Iowa</region></placeName></affiliation></author><author><name sortKey="Schnoor, Jerald L" sort="Schnoor, Jerald L" uniqKey="Schnoor J" first="Jerald L" last="Schnoor">Jerald L. Schnoor</name><affiliation wicri:level="4"><nlm:affiliation>Department of Civil and Environmental Engineering, 4105 Seamans Center, University of Iowa, IA, 52242, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Civil and Environmental Engineering, 4105 Seamans Center, University of Iowa, IA, 52242</wicri:regionArea><orgName type="university">Université de l'Iowa</orgName><placeName><settlement type="city">Iowa City</settlement><region type="state">Iowa</region></placeName></affiliation></author></analytic><series><title level="j">Ecological engineering</title><idno type="ISSN">0925-8574</idno><imprint><date when="2013" type="published">2013</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Theoretically, sequential cycles of dechlorination followed by aerobic bio-oxidation are desirable to achieve complete degradation of a mixture of higher and lower chlorinated PCBs. In this research, soil was artificially contaminated with polychlorinated biphenyls (PCBs) in mixture and as single congeners, aged, and planted with two different plant species. Alternating redox cycles were created in the root zone of plants by flooding and draining the soil. Over 32 weeks, switchgrass (<i>Panicum virgatum</i>) and poplar (<i>Populus deltoids x nigra</i> DN34) planted systems that were exposed to alternate cycles of flooding performed better in reducing parent PCBs than planted systems that were not cycled (p<0.05). The cycled systems also had a higher mass of PCB transformation products than the uncycled systems. Multiple cycles were necessary to achieve significant differences between the cycled and uncycled treatments.</div></front></TEI><pubmed><MedlineCitation Status="Publisher" Owner="NLM"><PMID Version="1">24860241</PMID><DateRevised><Year>2019</Year><Month>11</Month><Day>20</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0925-8574</ISSN><JournalIssue CitedMedium="Print"><Volume>57</Volume><PubDate><Year>2013</Year><Month>Aug</Month></PubDate></JournalIssue><Title>Ecological engineering</Title><ISOAbbreviation>Ecol Eng</ISOAbbreviation></Journal><ArticleTitle>Rhizospere Redox Cycling and Implications for Rhizosphere Biotransformation of Selected Polychlorinated Biphenyl (PCB) Congeners.</ArticleTitle><Pagination><MedlinePgn>285-292</MedlinePgn></Pagination><Abstract><AbstractText>Theoretically, sequential cycles of dechlorination followed by aerobic bio-oxidation are desirable to achieve complete degradation of a mixture of higher and lower chlorinated PCBs. In this research, soil was artificially contaminated with polychlorinated biphenyls (PCBs) in mixture and as single congeners, aged, and planted with two different plant species. Alternating redox cycles were created in the root zone of plants by flooding and draining the soil. Over 32 weeks, switchgrass (<i>Panicum virgatum</i>) and poplar (<i>Populus deltoids x nigra</i> DN34) planted systems that were exposed to alternate cycles of flooding performed better in reducing parent PCBs than planted systems that were not cycled (p<0.05). The cycled systems also had a higher mass of PCB transformation products than the uncycled systems. Multiple cycles were necessary to achieve significant differences between the cycled and uncycled treatments.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Meggo</LastName><ForeName>Richard E</ForeName><Initials>RE</Initials><AffiliationInfo><Affiliation>Department of Civil and Environmental Engineering, 4105 Seamans Center, University of Iowa, IA, 52242, USA, ;</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Schnoor</LastName><ForeName>Jerald L</ForeName><Initials>JL</Initials><AffiliationInfo><Affiliation>Department of Civil and Environmental Engineering, 4105 Seamans Center, University of Iowa, IA, 52242, USA.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><GrantList CompleteYN="Y"><Grant><GrantID>P42 ES013661</GrantID><Acronym>ES</Acronym><Agency>NIEHS NIH HHS</Agency><Country>United States</Country></Grant></GrantList><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>Netherlands</Country><MedlineTA>Ecol Eng</MedlineTA><NlmUniqueID>9886382</NlmUniqueID><ISSNLinking>0925-8574</ISSNLinking></MedlineJournalInfo><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Moisture Content Cycling</Keyword><Keyword MajorTopicYN="N">PCB</Keyword><Keyword MajorTopicYN="N">Poplar</Keyword><Keyword MajorTopicYN="N">Redox</Keyword><Keyword MajorTopicYN="N">Rhizosphere</Keyword><Keyword MajorTopicYN="N">Switchgrass</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2014</Year><Month>5</Month><Day>27</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2014</Year><Month>5</Month><Day>27</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2014</Year><Month>5</Month><Day>27</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">24860241</ArticleId><ArticleId IdType="doi">10.1016/j.ecoleng.2013.04.052</ArticleId><ArticleId IdType="pmc">PMC4028954</ArticleId><ArticleId IdType="mid">NIHMS514022</ArticleId></ArticleIdList><pmc-dir>nihms</pmc-dir>
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