Preliminary Studies on Treatment of Chromium Tannery Waste Sludge by Anaerobic Digestion
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概要
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In order to gain information on the digestibility of tannery waste sludge containing chromium, the effects of ammonia, chromium, and sulfide on anaerobic digestion were studied using an artificial waste containing gelatin as the organic carbon source. Experiments were conducted on a batch basis in the laboratory. In the tested range of initial concentations up to 16,000 mg/l as NH_4^+, inhibition of anaerobic digestion increased progressibely with increasing the ammonia concentration beyond 4,000 mg/l as NH_4^+.Cr(VI) was found to be strongly inhibitory at the concentration of 50 mg/l. On the contrary, even at the concentration of 1,000 mg/l, it was not obvious that Cr(III) was inhibitory. Sulfite and sulfide were inhibitory in the range of concentrations from 300 to 5,000 mg/l as S. These inhibitory effects on anacrobic digestion could be relieved by addition of ferric chloride to the digester contents or circulation of digester gas through a hydrogen sulfide absorber.
- 社団法人日本生物工学会の論文
- 1984-10-25
著者
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SHOJI Yasuhiro
Department of Aerospace Engineering, Tohoku University
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MAEDA YOSHIMICHI
Department of Applied Chemistry, Himeji Institute of Technology
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Maeda Yoshimichi
Department Of Applied Chemistry Faculty Of Engineering Himeji Institute Of Technology
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YONEDA Akio
Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo
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Shoji Yasuhiro
Department Of Aerospace Engineering Tohoku University
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Shoji Yasuhiro
Department Of Applied Chemistry Himeji Institute Of Technology
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AZUMI TAKATSUGU
Department of Applied Chemistry, Himeji Institute of Technology
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Yoneda Akio
Department Of Applied Chemistry Faculty Of Engineering Himeji Institute Of Technology
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Yoneda Akio
Department Of Applied Chemistry Himeji Institute Of Technology
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Azumi Takatsugu
Department Of Applied Chemistry Himeji Institute Of Technology
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