Skip to main content

Metal Reduction at Low pH by a Desulfosporosinus species: Implications for the Biological Treatment of Acidic Mine Drainage

Buy Article:

$63.00 plus tax (Refund Policy)

Abstract:

We isolated an acid-tolerant sulfate-reducing bacterium, GBSRB4.2, from coal mine-derived acidic mine drainage (AMD)-derived sediments. Sequence analysis of partial 16S rRNA gene of GBSRB4.2 revealed that it was affiliated with the genus Desulfosporosinus. GBSRB4.2 reduced sulfate, Fe(III) (hydr)oxide, Mn(IV) oxide, and U(VI) in acidic solutions (pH 4.2). Sulfate, Fe(III), and Mn(IV) but not U(VI) bioreduction led to an increase in the pH of acidic solutions and concurrent hydrolysis and precipitation of dissolved Al3+. Reduction of Fe(III), Mn(IV), and U(VI) in sulfate-free solutions revealed that these metals are enzymatically reduced by GBSRB4.2. GBSRB4.2 reduced U(VI) in groundwater from a radionuclide-contaminated aquifer more rapidly at pH 4.4 than at pH 7.1, possibly due to the formation of poorly bioreducible Ca-U(VI)-CO3 complexes in the pH 7.1 groundwater.

Keywords: Desulfosporosinus; acidic mine drainage; metal reduction; sulfate-reducing bacteria

Document Type: Research Article

DOI: https://doi.org/10.1080/01490450802660193

Affiliations: 1: Department of Geology and Environmental Science, The University of Akron, Akron, OH,Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, Pennsylvania, USA 2: Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, Pennsylvania, USA 3: ARCADIS U.S. Inc., USA 4: Department of Crop and Soil Sciences, The Pennsylvania State University, Pennsylvania, USA

Publication date: 2009-03-01

More about this publication?
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more