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Provedor de dados:  BJM
País:  Brazil
Título:  Aerobic cyanide degradation by bacterial isolates from cassava factory wastewater
Autores:  Kandasamy,Sujatha
Dananjeyan,Balachandar
Krishnamurthy,Kumar
Benckiser,Gero
Data:  2015-09-01
Ano:  2015
Palavras-chave:  Cassava factory wastewater
Aerobic degradation
Cyanide degrading bacteria
Resumo:  Ten bacterial strains that utilize cyanide (CN) as a nitrogen source were isolated from cassava factory wastewater after enrichment in a liquid media containing sodium cyanide (1 mM) and glucose (0.2% w/v). The strains could tolerate and grow in cyanide concentrations of up to 5 mM. Increased cyanide levels in the media caused an extension of lag phase in the bacterial growth indicating that they need some period of acclimatisation. The rate of cyanide removal by the strains depends on the initial cyanide and glucose concentrations. When initial cyanide and glucose concentrations were increased up to 5 mM, cyanide removal rate increased up to 63 and 61 per cent by Bacillus pumilus and Pseudomonas putida. Metabolic products such as ammonia and formate were detected in culture supernatants, suggesting a direct hydrolytic pathway without an intermediate formamide. The study clearly demonstrates the potential of aerobic treatment with cyanide degrading bacteria for cyanide removal in cassava factory wastewaters.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Identificador:  http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000300659
Editor:  Sociedade Brasileira de Microbiologia
Relação:  10.1590/S1517-838246320130516
Formato:  text/html
Fonte:  Brazilian Journal of Microbiology v.46 n.3 2015
Direitos:  info:eu-repo/semantics/openAccess
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