A Small-Scale Sulfate-Reducing Bioreactor for Manganese Removal from a Synthetic Mine Drainage

J. D. Edwards, C. D. Barton, A. D. Karathanasis

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

This research evaluated the efficiency of a mesocosm scale bioreactor to remove Mn from a synthetic mine drainage in the presence of selected organic and inorganic substrate combinations that could enhance sulfate reduction and induce Mn sulfide precipitation. The mine drainage tested was slightly acidic (pH 6.2) and had average Mn and SO4 concentrations of 90 and 1,500 mg/L, respectively. The substrates used were creek sediment amended with either wood mulch or a wood mulch and biosolid mixture. Greater than 90% of Mn and 70% of sulfate was removed over a 65-day test period. The results suggested multiple Mn removal mechanisms including sorption, complexation, and Mn sulfide, Mn oxide, and/or Mn carbonate precipitation.

Original languageEnglish
Pages (from-to)267-275
Number of pages9
JournalWater, Air, and Soil Pollution
Volume203
Issue number1-4
DOIs
StatePublished - 2009

Bibliographical note

Publisher Copyright:
© 2009, Springer Science+Business Media B.V. All Right Reserved.

Keywords

  • Bioreactor
  • Manganese
  • Mine drainage
  • Sulfate reduction
  • Sulfate/sulfide

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Ecological Modeling
  • Water Science and Technology
  • Pollution

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