BIODEGRADATION OF FREE CYANIDE BY THE FUN GI FUSARIUM-SOLANI - RELATION TO PH AND CYANIDE SPECIATION IN SOLUTION

Authors
DUMESTRE A BOUSSERRHINE N BERTHELIN J
Citation
A. Dumestre et al., BIODEGRADATION OF FREE CYANIDE BY THE FUN GI FUSARIUM-SOLANI - RELATION TO PH AND CYANIDE SPECIATION IN SOLUTION, Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes, 325(2), 1997, pp. 133-138
Citations number
21
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes → ACNP
ISSN journal
12518050
Volume
325
Issue
2
Year of publication
1997
Pages
133 - 138
Database
ISI
SICI code
1251-8050(1997)325:2<133:BOFCBT>2.0.ZU;2-M
Abstract
Free cyanide biodegradation by Fusarium solani, a fungi isolated from cyanide-contaminated soils, involves a cyanide hydrolyzing enzyme, cya nide hydratase (EC 4.2.1.66). This enzyme specifically seems to conver t cyanhydric acid (HCN) to formamide but not the cyanide ion (CN-). He nce, the rate of free cyanide biodegradation is a function of the equi librium HCN/CN- in solution. A better understanding of cyanide hydrata se properties allows the definition of optimal conditions of F. solani biodegradation activity, and the proposition of a biological treatmen t of cyanide-contaminated alkaline soils and effluents.