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Analysis of bacterial diversity in acidic pond water and compost after treatment of artificial acid mine drainage for metal removal
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Air and Water Science.
2005 (English)In: Biotechnology and Bioengineering, ISSN 0006-3592, E-ISSN 1097-0290, Vol. 90, no 5, 543-551 p.Article in journal (Refereed) Published
Abstract [en]

The microbial population of a sludge amended leaf compost material utilized for treatment of artificial acid mine drainage was studied by culture-independent molecular methods. Iron-rich and sulfurous wastewater (artificial acid mine drainage) was circulated through a column bioreactor for 16 months. After 12 months the column was inoculated with a mixed culture from an acidic pond receiving acid mine drainage from a tailings impoundment at a decommissioned site in Kristineberg, North Sweden. Hydrogen sulfide odor and the formation of black precipitates indicated that sulfate-reduction occurred in the column. 16S rDNA gene analysis by denaturing gradient gel electrophoresis, cloning, and sequencing as well as fluorescent in situ hybridization confirmed the presence of microorganisms closely related to sulfate-reducing bacteria and microorganisms from the genera Pseudoxanthmonas, Dechlorosoma, Desulfovibrio, Agrobacterium, Methylocapsa, Rhodococcus, Sulfobacillus, and some unidentified bacteria. Sulfate-reducing bacteria were found in the column bioreactor 2 weeks after inoculation, but not thereafter. This suggests they were in low abundance, even though sulfate remediation rates were significant. Instead, the population contained species similar to those previously found to utilize humic substances released from the compost material.

Place, publisher, year, edition, pages
2005. Vol. 90, no 5, 543-551 p.
National Category
Oceanography, Hydrology, Water Resources
URN: urn:nbn:se:uu:diva-75276DOI: 10.1002/bit.20421OAI: oai:DiVA.org:uu-75276DiVA: diva2:103186
Available from: 2006-03-15 Created: 2006-03-15 Last updated: 2012-01-12Bibliographically approved

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Herbert, Roger
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