シアン含有の産業廃液処理 : (第5報) Fusarium Solaniのシアン分解に関する速度論

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This paper describes a simple kinetic model of cyanide degradation reaction by Fusarium solani with substrate inhibition and inactivation. Furthermore, the optimal operating conditions for continuos treatments of waste containing cyanide were discussed using a kinetic equation derived from this model. The following results were obtained by a mathematical analysis of the model.1) The decay of cyanide degradation activity of F. solani was expressed by the first order reaction eqution v_t/v_0=e^<-al>, and the inactivation rate constant, α, was a function of the cyanide concentration. This was estimated by the following equation : α(s)=k_2s^2/K_8+S While, the rate of cyanide degradation at a constant cyanide concentration was represented by the following equation : v_t=(v_m・s)/(K_8+S)exp-(k_2・s^2)/(K_8+s)t)) where v_l is the rate of cyanide degradation at the time of t, v_m is the maxiumum rate of cyanide degradtion, s is the concentration of cyanide, t is the reaction time, K_8 is the Michaelis-Menten constant, and k_2 is the constant.2) In order to maintain the outlet concentration of cyanide at a constant level in the continuous treatments of waste containing cyanide, the active cells had to be added at a rate of e^<α(s)t>.The over all cyanide degradation ability, x, at a constant cyanide concentration was represented by the following equation : A=σ_0・∫^∞ _0e^<-α(s)t>dt=σ_0/α(s)where, σ_0 is a specific rate of cyanide degredation at a particular cyanide concentration.Therefore, the optimal concentration of cyanide to maximize the over all cyanide degradation ability was below 100 ppm.Also, the maximum rate of cyanide degradation varied with the contact time between the cells and cyamnide, and the concentration of cyanide in the serical systems.
社団法人日本生物工学会の論文
1969-10-25

シアン含有の産業廃液処理 : (第5報) Fusarium Solaniのシアン分解に関する速度論

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