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Bioemulsifier production by Microbacterium sp. strains isolated from mangrove and their application to remove cadmiun and zinc from hazardous industrial residue
Aniszewski, Erick; Silva Peixoto, Raquel; Faria Mota, Fábio; Gomes Ferreira Leite, Selma; Soares Rosado, Alexandre.
Afiliação
  • Aniszewski, Erick; Universidade Federal do Rio de Janeiro Instituto de Microbiologia Prof. Paulo de Góes ,Universidade Federal do Rio de Janeiro Escola de Química.
  • Silva Peixoto, Raquel; Universidade Federal do Rio de Janeiro Instituto de Microbiologia Prof. Paulo de Góes.
  • Faria Mota, Fábio; Fundação Oswaldo Cruz Instituto Oswaldo Cruz Laboratório de Biologia Computacional e Sistemas.
  • Gomes Ferreira Leite, Selma; Universidade Federal do Rio de Janeiro Escola de Química.
  • Soares Rosado, Alexandre; Universidade Federal do Rio de Janeiro Instituto de Microbiologia Prof. Paulo de Góes.
Braz. J. Microbiol. ; 41(1)2010.
Article em En | VETINDEX | ID: vti-444507
Biblioteca responsável: BR68.1
ABSTRACT
The contamination of ecosystems with heavy metals is an important issue in current world and remediation technologies should be in according to environmental sustainability concept. Bioemulsifier are promising agents to be used in metal removal and could be effective to many applications in environmental industries. The aims of this work was screening the potential production of bioemulsifier by microorganisms isolated from an oil contaminated mangrove, and evaluate cadmium and zinc removal potential of those strains from a hazardous industrial residue. From that, bioemulsifier-producing bacteria were isolated from urban mangrove sediments. Four isolates were identified as Microbacterium sp by 16S rRNA analysis and were able to reduce up to 53.3% of culture medium surface tension (TS) when using glucose as carbon and energy source and 20.2% when sucrose was used. Suspensions containing bioemulsifier produced by Microbacterium sp. strains show to be able to remove cadmium and zinc from contaminated industrial residue, and its ability varied according carbon source. Significant differences in metal removal were observed by all strains depending on the carbon source. When glucose was used, Cd and Zn removal varied from 17 to 41%, and 14 to 68%, respectively. However, when sucrose was used it was observed only 4 to a maximum of 15% of Cd removal, and 4 to 17% of Zn removal. When the same tests were performed after ethanol precipitation, the results were different the percentages of removal of Zn (7-27%) and Cd (14-32%) were higher from sucrose cultures. This is the first report of heavy metals removal by bioemulsifier from Microbacterium sp.
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Texto completo: 1 Base de dados: VETINDEX Idioma: En Revista: Braz. J. Microbiol. Ano de publicação: 2010 Tipo de documento: Article
Texto completo
Adicionar na Minha BVS
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Texto completo: 1 Base de dados: VETINDEX Idioma: En Revista: Braz. J. Microbiol. Ano de publicação: 2010 Tipo de documento: Article