Isolation screen and application of highly-effective cyanide-degrading fungus

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  • 1. Dept. of Architecture and Environment, Sichuan University, Chengdu 610065, China;
    2. Chengdu Ketai Technology Company, Chengdu 610065, China

Received date: 2005-02-10

  Online published: 2010-10-01

Abstract

Three highly effective cyanide-degrading fungus are isolated from electroplating wastewater, cyanide-contaminated soil and liquid in plating bath. The cyanide-degrading conditions of strain Fw as investigated. The results show that the optimum cyanide-degrading conditions are as follows: temperature 20-30℃,pH 5-7, rotating rate 100-180 r/min,inoculum 6%-20%. Under the optimum cyanide-degrading conditions, the CN-degradation rate of strain Fw is above 95%, the residual CN- concentration is less than 1 mg/L. Strain Fw can utilize CN- as carbon source and nitrogen source. When no other carbon and nitrogen sources are added in the medium, the residual CN- is 0.25 mg/L and 0.49 mg/L, meeting the requirement of 1st grade discharge standard. Some new bases for the problems of how to use highly effective fungus to treat cyanide-containing wastewater have been obtained.

Cite this article

Ji Junyuan, Wang Xiangdong, Li Fude, Zeng Yuan, Qiao Yong . Isolation screen and application of highly-effective cyanide-degrading fungus[J]. Industrial Water Treatment, 2005 , 25(7) : 35 -37 . DOI: 10.11894/1005-829x.2005.25(7).35

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