メタン発酵における重金属化合物, 無機塩類, 炭化水素系化合物および抗生物質の影響について : メタン発酵における各種化合物の分解と阻害(第2報)

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In an earlier paper, the biodegradability and toxicity of various carbohydrates and alcohols under the anaerobic digestion were reported. In this paper, the effects of heavy metal compounds, inorganic salts, hydrocarbon compounds and antibiotics on the gas production are reported.Studies were carried out through thermophilic digestion (54℃), with seed cultures made up using synthetic medium.1. Heavy metal compounds : Effects of Cu-compounds (CuSO_4・5H_2O, Cu_2O, CuCl, CuS etc.), Cr-compounds (K_2Cr_2O_7,Cr(OH)_3,Cr_2O_3 etc.), Ni-compounds (NiSO_4・7H_2O, NiCl_2・6H_2O, NiS etc.) and Hg-compounds (HgCl_3,HgNO_3) were investigated. The permissible concenrations of toxicity were in the range of 200-400 ppm for Cu, 100-500 ppm for Cr and 40-120 ppm as Ni.2. Inorganic salts : The permissible concentrations of NaCl and NH_4Cl were 30,000 pp, and 10,000 ppm respectively, but those of NaNO_2,NaNO_3 and KCN, were only 100 ppm. 3. Hydrocarbon compounds : The permissible concentrations were 500-10,000 ppm for phenol, toluene and cresol, 50 ppm in ABS, 500 ppm in PCB.4. Antibiotics : The addition of Penicillin, Streptomysin and Kanamysin at a concentration of 5,000 ppm had no effect on the gas production.
社団法人日本生物工学会の論文
1977-01-25