シアン含有の産業廃液処理 : (第3報)Fusarium solaniによるシアン含有廃液処理の連続化について

概要

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In order to establish he optimal operating conditions for the continuous treatments of cyanide waste by F. solani, the fundamental problems were investigated. Firstly, the effect of cyanide concentration and the cyanide loading for the cells on the cyanide degradation rate were studied. The results obtained indicated that in the presence of a high concentration of cyanide, the specific rate of cyanide degradation progressively fell off at a certain level and above of the cyanide loading, that is a phenomenon of the substrate inhibition was observed. Secondly, the changes of the cyanide degradation activity with the advanced age of the culture, and the durability of the cyanide degradation activitiy in various cyanide concentrations, were studied by using the replacement culture method. The cyanide degradation activity gradually disappeared during the repeated F. solani cultures. This inactivation may be caused by a denaturation of the protein in enzyme. Consequently, the over-all cyanide degradation activity was 20 mg CN/mg dry cell. It was concluded that this value is very useful for the designing of efficient continuous treatments of waste containing cyanide.
社団法人日本生物工学会の論文
1968-10-25