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KMID : 0382420000260040065
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Korean Journal of Environmental Health Society
2000 Volume.26 No. 4 p.65 ~ p.74
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Effect of Cd2+ and Cu2+ on the Growth of a Methanogen and a Sulfate-Reducing Bacterium isolated from sea-based landfill
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Chang Young-Cheol
Jung Kweon
Jeon Eun-Mi
Bae Il-Sang
Kim Kwang-Jin
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Abstract
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The sensitivity of a methanogen and sulfate-reducing bacterium isolated from a sea-based landfill site to Cd^2+ and Cu^2+ was studied. Methanogens and sulfate-reducing bacteria in leachates of the waste disposal site were enumerated using the MPN method. Methanobacterium thermoautotrophicum KHT, isolated from the leachate, could not grow at 0.5 mM Cd^2+ or 1.0 mM Cu^2+. Desulfotomaculum sp. RHT, isolated from the same leachate, was able to insolubilize 3.0 mM Cd^2+ or 2.0 mM Cu^2+ by production of hydrogen sulfide. When strains KHT and RHT were cultured together in the presence of the heavy metals, strain KHT could grow at high heavy metal concentrations after insolubilization of the metals by strain RHT.
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