The Influence of Phototrophic Biomass on Fe and S Redox Cycling in an Acid Mine Drainage-Impacted System

John M. Senko; Doug Bertel; Thomas J. Quick; William D. Burgos

doi:10.1007/s10230-010-0123-3

The Influence of Phototrophic Biomass on Fe and S Redox Cycling in an Acid Mine Drainage-Impacted System

John M. Senko, Doug Bertel, Thomas J. Quick, William D. Burgos

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

We examined the effects of organic carbon from oxygenic photosynthetic algal biomass on the redox cycling of Fe and S in an acid mine drainage (AMD)-impacted system. Fe(III)-rich sediments from the field site with abundant algae contained fewer Fe(II) oxidizing bacteria and lower rates of Fe(II) oxidation compared to sediments that did not contain abundant algae. The addition of algal biomass to sediments that did not previously contain abundant algae inhibited microbiological Fe(II) oxidation and enhanced microbiological Fe(III) and sulfate reduction. As Fe(III) reduction proceeded, sulfate was released into solution due to the reductive solubilization of Fe(III) (hydr)oxy-sulfate phases. Our results indicate that in systems where oxidative precipitation of Fe is exploited as an AMD treatment strategy, the abundant organic carbon provided by photosynthetic organisms may inhibit or reverse Fe(II) oxidation.

Original language	English (US)
Pages (from-to)	38-46
Number of pages	9
Journal	Mine Water and the Environment
Volume	30
Issue number	1
DOIs	https://doi.org/10.1007/s10230-010-0123-3
State	Published - Dec 2011

All Science Journal Classification (ASJC) codes

Water Science and Technology
Geotechnical Engineering and Engineering Geology

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title = "The Influence of Phototrophic Biomass on Fe and S Redox Cycling in an Acid Mine Drainage-Impacted System",

abstract = "We examined the effects of organic carbon from oxygenic photosynthetic algal biomass on the redox cycling of Fe and S in an acid mine drainage (AMD)-impacted system. Fe(III)-rich sediments from the field site with abundant algae contained fewer Fe(II) oxidizing bacteria and lower rates of Fe(II) oxidation compared to sediments that did not contain abundant algae. The addition of algal biomass to sediments that did not previously contain abundant algae inhibited microbiological Fe(II) oxidation and enhanced microbiological Fe(III) and sulfate reduction. As Fe(III) reduction proceeded, sulfate was released into solution due to the reductive solubilization of Fe(III) (hydr)oxy-sulfate phases. Our results indicate that in systems where oxidative precipitation of Fe is exploited as an AMD treatment strategy, the abundant organic carbon provided by photosynthetic organisms may inhibit or reverse Fe(II) oxidation.",

author = "Senko, {John M.} and Doug Bertel and Quick, {Thomas J.} and Burgos, {William D.}",

note = "Funding Information: Acknowledgments We thank Malcolm Crittendon for providing samples from Indiana County, Pennsylvania. This work was supported by the Pennsylvania Dept of Environmental Protection, Bureau of Abandoned Mine Reclamation, the Pennsylvania Water Resources Research Center at The Pennsylvania State University, and a faculty research grant provided by the University of Akron.",

year = "2011",

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doi = "10.1007/s10230-010-0123-3",

language = "English (US)",

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journal = "Mine Water and the Environment",

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AU - Senko, John M.

AU - Bertel, Doug

AU - Quick, Thomas J.

AU - Burgos, William D.

N1 - Funding Information: Acknowledgments We thank Malcolm Crittendon for providing samples from Indiana County, Pennsylvania. This work was supported by the Pennsylvania Dept of Environmental Protection, Bureau of Abandoned Mine Reclamation, the Pennsylvania Water Resources Research Center at The Pennsylvania State University, and a faculty research grant provided by the University of Akron.

PY - 2011/12

Y1 - 2011/12

N2 - We examined the effects of organic carbon from oxygenic photosynthetic algal biomass on the redox cycling of Fe and S in an acid mine drainage (AMD)-impacted system. Fe(III)-rich sediments from the field site with abundant algae contained fewer Fe(II) oxidizing bacteria and lower rates of Fe(II) oxidation compared to sediments that did not contain abundant algae. The addition of algal biomass to sediments that did not previously contain abundant algae inhibited microbiological Fe(II) oxidation and enhanced microbiological Fe(III) and sulfate reduction. As Fe(III) reduction proceeded, sulfate was released into solution due to the reductive solubilization of Fe(III) (hydr)oxy-sulfate phases. Our results indicate that in systems where oxidative precipitation of Fe is exploited as an AMD treatment strategy, the abundant organic carbon provided by photosynthetic organisms may inhibit or reverse Fe(II) oxidation.

AB - We examined the effects of organic carbon from oxygenic photosynthetic algal biomass on the redox cycling of Fe and S in an acid mine drainage (AMD)-impacted system. Fe(III)-rich sediments from the field site with abundant algae contained fewer Fe(II) oxidizing bacteria and lower rates of Fe(II) oxidation compared to sediments that did not contain abundant algae. The addition of algal biomass to sediments that did not previously contain abundant algae inhibited microbiological Fe(II) oxidation and enhanced microbiological Fe(III) and sulfate reduction. As Fe(III) reduction proceeded, sulfate was released into solution due to the reductive solubilization of Fe(III) (hydr)oxy-sulfate phases. Our results indicate that in systems where oxidative precipitation of Fe is exploited as an AMD treatment strategy, the abundant organic carbon provided by photosynthetic organisms may inhibit or reverse Fe(II) oxidation.

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The Influence of Phototrophic Biomass on Fe and S Redox Cycling in an Acid Mine Drainage-Impacted System

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