Development of a process for biodetoxification of metal cyanides from waste waters

摘要

A bacterial consortium capable of utilising metal cyanides as a source of nitrogen was used to develop a microbiological process for the detoxification of metal cyanides (viz. copper cyanide and zinc cyanide) from electroplating waste water. Optimal conditions biodegradation of both the metal-cyanide compounds were pH 7.5, temperature 35 deg C, inoculum size 10~9 cells per ml glucose or sugarcane molasses requirement of 5 mM or 0.6 ml/l, respectively.