固定化Paracoccus denitrificansによる脱窒とその固定化細胞の保存特性

概要

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The denitrifying bacteria were immobilized in photocrosslinkable resins. The immobilized growing cells of Paracoccus denitrificans IFO 12442 had high nitrate reduction rates of 1.7 mmol・(g-dry cells)^<-1>・h^<-1>(in a run) and 4.0-8.4 mmol・(g-dry cells)^<-1>・h<-1> (in a continuous run). In continuous runs, however, the high nitrate loading (25mmol・l^<-1>・h^<-1> resulted in the accumulation of nitrous oxide in gas evolved by the bacterium.The stability of immobilized P. denitrificans cells was examined to extend the availability of the immobilized cells in wastewater treatment. The immobilized cells could be stored for 70 days or more even in tap water and saline at room temperature (20-30℃). On the other hand, no activity was observed in the free cells stored under the same conditions.
社団法人日本生物工学会の論文
1988-07-25