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The association of microbial activity with Fe, S and trace element distribution in sediment cores within a natural wetland polluted by acid mine drainage

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dc.contributor.author Aguinaga, Oscar E.
dc.contributor.author Wakelin, James F. T.
dc.contributor.author White, Keith N.
dc.contributor.author Dean, Andrew P.
dc.contributor.author Pittman, Jon K.
dc.date.accessioned 2019-07-04T17:01:21Z
dc.date.available 2019-07-04T17:01:21Z
dc.date.issued 2019
dc.identifier.uri https://hdl.handle.net/20.500.12866/6919
dc.description.abstract Natural recovery and remediation of acid mine drainage (AMD) reduces the generation of acidity and transport of trace elements in the runoff. A natural wetland that receives and remediates AMD from an abandoned copper mine at Parys Mountain (Anglesey, UK) was investigated for better understanding of the remediation mechanisms. Water column concentrations of dissolved Fe and S species, trace metal (loid)s and acidity decreased markedly as the mine drainage stream passed through the wetland. The metal (loid)s were removed from the water column by deposition into the sediment. Fe typically accumulated to higher concentrations in the surface layers of sediment while S and trace metal (loid)s were deposited at higher concentration within deeper (20-50cm) sediments. High resolution X-ray fluorescence scans of sediment cores taken at three sites along the wetland indicates co-immobilization of Zn, Cu and S with sediment depth as each element showed a similar core profile. To examine the role of bacteria in sediment elemental deposition, marker genes for Fe and S metabolism were quantified. Increased expression of marker genes for S and Fe oxidation was detected at the same location within the middle of the wetland where significant decrease in SO4(2-) and Fe(2+) was observed and where generation of particulate Fe occurs. This suggests that the distribution and speciation of Fe and S that mediates the immobilization and deposition of trace elements within the natural wetland sediments is mediated in part by bacterial activity. en_US
dc.language.iso eng
dc.publisher Elsevier
dc.relation.ispartof urn:issn:0045-6535
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject Environmental Monitoring en_US
dc.subject Wetlands en_US
dc.subject Abandoned mines en_US
dc.subject abundance en_US
dc.subject acid en_US
dc.subject acid mine drainage en_US
dc.subject Acid mine drainage en_US
dc.subject acidity en_US
dc.subject Acids en_US
dc.subject analysis en_US
dc.subject Article en_US
dc.subject Bacteria en_US
dc.subject Bacteria (microorganisms) en_US
dc.subject Bacteria abundance en_US
dc.subject Bacterial activity en_US
dc.subject bacterial gene en_US
dc.subject bacterium en_US
dc.subject Binary alloys en_US
dc.subject bioremediation en_US
dc.subject chemistry en_US
dc.subject concentration (parameter) en_US
dc.subject controlled study en_US
dc.subject copper en_US
dc.subject Copper mines en_US
dc.subject Drainage en_US
dc.subject environmental monitoring en_US
dc.subject Environmental Monitoring en_US
dc.subject Environmental Pollution en_US
dc.subject Fluorescence en_US
dc.subject gene expression en_US
dc.subject Gene expression en_US
dc.subject Geologic Sediments en_US
dc.subject Geologic Sediments/microbiology en_US
dc.subject High resolution en_US
dc.subject immobilization en_US
dc.subject iron en_US
dc.subject Iron en_US
dc.subject Iron/chemistry en_US
dc.subject Isle of Anglesey en_US
dc.subject marker gene en_US
dc.subject metal en_US
dc.subject Metal deposition en_US
dc.subject Metals en_US
dc.subject Metals/analysis en_US
dc.subject Microbial activities en_US
dc.subject microbial activity en_US
dc.subject microbial community en_US
dc.subject microbiology en_US
dc.subject mining en_US
dc.subject Mining en_US
dc.subject Natural recovery en_US
dc.subject nonhuman en_US
dc.subject oxidation en_US
dc.subject Parys Mountain en_US
dc.subject pollution en_US
dc.subject Potassium alloys en_US
dc.subject river en_US
dc.subject Rivers en_US
dc.subject sediment en_US
dc.subject sediment core en_US
dc.subject Sedimentation en_US
dc.subject Sediments en_US
dc.subject species differentiation en_US
dc.subject sulfur en_US
dc.subject Sulfur en_US
dc.subject Sulfur/analysis en_US
dc.subject surface property en_US
dc.subject trace element en_US
dc.subject Trace element distribution en_US
dc.subject Trace elements en_US
dc.subject Trace Elements en_US
dc.subject Trace Elements/analysis en_US
dc.subject trace metal en_US
dc.subject United Kingdom en_US
dc.subject Uranium alloys en_US
dc.subject Wales en_US
dc.subject water pollutant en_US
dc.subject Water Pollutants, Chemical en_US
dc.subject Water Pollutants, Chemical/analysis en_US
dc.subject wetland en_US
dc.subject Wetlands en_US
dc.subject X ray fluorescence en_US
dc.subject X rays en_US
dc.subject X-ray fluorescence core scanning en_US
dc.subject zinc en_US
dc.title The association of microbial activity with Fe, S and trace element distribution in sediment cores within a natural wetland polluted by acid mine drainage en_US
dc.type info:eu-repo/semantics/article
dc.identifier.doi https://doi.org/10.1016/j.chemosphere.2019.05.157


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