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dc.contributor.authorAguinaga, Oscar E
dc.contributor.authorWhite, Keith N
dc.contributor.authorDean, Andrew P
dc.contributor.authorPittman, Jon K; email: jon.pittman@manchester.ac.uk
dc.date.accessioned2021-09-18T00:49:26Z
dc.date.available2021-09-18T00:49:26Z
dc.date.issued2021-08-28
dc.date.submitted2021-04-29
dc.identifierpubmed: 34481302
dc.identifierpii: S0269-7491(21)01646-8
dc.identifierdoi: 10.1016/j.envpol.2021.118064
dc.identifier.citationEnvironmental pollution (Barking, Essex : 1987), volume 290, page 118064
dc.identifier.urihttp://hdl.handle.net/10034/625883
dc.descriptionFrom PubMed via Jisc Publications Router
dc.descriptionHistory: received 2021-04-29, revised 2021-08-24, accepted 2021-08-26
dc.descriptionPublication status: aheadofprint
dc.description.abstractAcid mine drainage (AMD) is a serious environmental problem worldwide that requires efficient and sustainable remediation technologies including the use of biological mechanisms. A key challenge for AMD bioremediation is to provide optimal conditions for microbial-mediated immobilisation of trace metals. Although organic carbon and oxygen can enhance treatment efficiency, the effect on microbial communities is unclear. In this study, surface sediments from a natural wetland with proven efficiency for AMD bioremediation were artificially exposed to oxygen (by aeration) and/or organic carbon (in the form of mixed organic acids) and incubated under laboratory conditions. In addition to measuring changes in water chemistry, a metagenomics approach was used to determine changes in sediment bacterial, archaeal and fungal community structure, and functional gene abundance. The addition of organic carbon produced major changes in the abundance of microorganisms related to iron and sulfur metabolism (including Geobacter and Pelobacter) and increased levels of particulate metals via sulfate reduction. Aeration resulted in an increase in Sideroxydans abundance but no significant changes in metal chemistry were observed. The study concludes that the utilisation of organic carbon by microorganisms is more important for achieving efficient AMD treatment than the availability of oxygen, yet the combination of oxygen with organic carbon addition did not inhibit the improvements to water quality. [Abstract copyright: Copyright © 2021 Elsevier Ltd. All rights reserved.]
dc.languageeng
dc.sourceeissn: 1873-6424
dc.subjectMicrobial bioremediation
dc.subjectFungal community
dc.subjectMetagenomics
dc.subjectMetal pollution
dc.subjectBacterial community
dc.subjectAcid mine drainage
dc.titleAddition of organic acids to acid mine drainage polluted wetland sediment leads to microbial community structure and functional changes and improved water quality.
dc.typearticle
dc.date.updated2021-09-18T00:49:26Z
dc.date.accepted2021-08-26


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