KINETICS OF ENZYMATIC DEGRADATION OF CYANIDE

被引:34
作者
BASHEER, S [1 ]
KUT, OM [1 ]
PRENOSIL, JE [1 ]
BOURNE, JR [1 ]
机构
[1] SWISS FED INST TECHNOL,DEPT CHEM ENGN,CH-8092 ZURICH,SWITZERLAND
关键词
BIOCATALYST; CYANIDE DEGRADATION; IMMOBILIZED ENZYME; WASTEWATERS; KINETICS;
D O I
10.1002/bit.260390607
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
CYANIDASE(R) is a new enzyme preparation capable of degrading cyanide in industrial wastewaters to ammonia and formate in an apparently one-step reaction, down to very low concentrations. This enzyme has both a high selectivity and affinity toward cyanide. A granular form of the biocatalyst was used in a recirculation fixed bed reactor in order to characterize the new biocatalyst with respect to pH, ionic strength, common ions normally present in wastewaters, mass transfer effects, and temperature. Long term stability was investigated. The kinetics of the enzymatic degradation of cyanide were studied in a batch reactor using the powdered immobilized enzyme preparation and modeled using a simple Michaelis-Menten equation.
引用
收藏
页码:629 / 634
页数:6
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