Enhancement of sulfate reduction activity using granular sludge in anaerobic treatment of acid mine drainage.
Three laboratory-scale, upflow anaerobic reactors were operated for about 250 d to determine the effect of activated granular sludge with high density of sulfate reducing bacteria in the treatment of artificial acid mine drainage. Sulfate reducing bacteria in the granular sludge taken from the upflow anaerobic sludge blanket reactor were 1-2 x 10(6) c.f.u. g(-1), which is at least 10 times higher than that of organic substrates such as cow manure and oak compost. The reactors with granular sludge effectively removed over 99% of heavy metals, such as Fe, Al, Cu, and Cd during the experiment. This result suggests a feasibility of the application of granular sludge as a source of sulfate reducing bacteria for the treatment of acid mine drainage.
La
Hyun-Joon
HJ
Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Taejon 305-701, Korea.
Kim
Kyoung-Ho
KH
Quan
Zhe-Xue
ZX
Cho
Young-Gyun
YG
Lee
Sung-Taik
ST
D000693:Anaerobiosis; D001421:Bacteria, Anaerobic / Q000737:chemistry / Q000378:metabolism*; D001673:Biodegradation, Environmental; D019149:Bioreactors; D006863:Hydrogen-Ion Concentration; D008372:Manure / Q000382:microbiology; D019216:Metals, Heavy / Q000378:metabolism*; D008906:Mining / Q000379:methods; D010084:Oxidation-Reduction; D010865:Pilot Projects; D019057:Quality-Adjusted Life Years; D012722:Sewage / Q000382:microbiology*; D013431:Sulfates / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000378:metabolism; D014934:Wood
D008372:Manure; D019216:Metals, Heavy; D012722:Sewage; D013431:Sulfates; D014874:Water Pollutants, Chemical