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	Provedor de dados ArchiMer (2) Autor Deschatre, Marine (2) Ghillebaert, F. (2) Guezennec, Jean (2) Simon-colin, Christelle (2) Palavra-chave Bioremediation (2) Copper and silver removal (2) Bacterial exopolysaccharide (1) Bacterial exopolysaccharides (1) Biosorption (1) Sorption (1) Mais... Tipo do documento Text (2) Ano 2015 (1) 2013 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Study of biosorption of copper and silver by marine bacterial exopolysaccharides ArchiMer Deschatre, Marine; Ghillebaert, F.; Guezennec, Jean; Simon-colin, Christelle. Metal bioremediation was studied by biosorption of analytical grade copper Cu(II) and silver Ag(I) by an exopolysaccharide (EPS) produced by marine bacteria from French Polynesia. Colorimetric analysis showed that EPS was composed of neutral sugars, uronic acids, acetate and especially high sulfate amount (29%). Metal biosorption experiments were conducted in batch process. Results showed that the maximum sorption capacities calculated according to Langmuir model were 400 mg g(-1) EPS (6.29 mmol g(-1)) and 256 mg g(-1) EPS (2.38 mmol g(-1)) for Cu(II) and Ag(I), respectively. The influence of pH, biosorbent concentration, ionic strength on EPS biosorption capacities was investigated. Results showed that bacterial EPS can be considered as very promising for... Tipo: Text Palavras-chave: Biosorption; Bacterial exopolysaccharides; Copper and silver removal; Bioremediation. Ano: 2015 URL: https://archimer.ifremer.fr/doc/00601/71336/69766.pdf Sorption of Copper(II) and Silver(I) by Four Bacterial Exopolysaccharides ArchiMer Deschatre, Marine; Ghillebaert, F.; Guezennec, Jean; Simon-colin, Christelle. Metal remediation was studied by the sorption of analytical grade copper Cu(II) and silver Ag(I) by four exopolysaccharides (EPS) produced by marine bacteria. Colorimetric analysis showed that these EPS were composed of neutral sugars, uronic acids (>20 %), acetate, and sulfate (29 %). Metal sorption experiments were conducted in batch process. Results showed that the maximum sorption capacities calculated according to Langmuir model were 400 mg g−1 EPS (6.29 mmol g−1) and 333 mg g−1 EPS (3.09 mmol g−1) for Cu(II) and Ag(I), respectively. Optimum pH values of Ag(I) sorption were determined as 5.7. Experiment results also demonstrated the influence of initial silver concentration and EPS concentrations. Microanalyzing coupled with scanning electron... Tipo: Text Palavras-chave: Sorption; Bacterial exopolysaccharide; Copper and silver removal; Bioremediation. Ano: 2013 URL: http://archimer.ifremer.fr/doc/00171/28222/27464.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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