Biosorption of copper by Paenibacillus polymyxa cells and their exopolysaccharide

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Biosorption of heavy metals by gram-positive, non-pathogenic and non-toxicogenic Paenibacillus polymyxa P13 was evaluated. Copper was chosen as a model element because it is a pollutant originated from several industries. An EPS (exopolysaccharide)-producing phenotype exhibited significant Cu(II) bi...

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Autores principales:	Prado Acosta, Mariano, Battaglini, Fernando, Ruzal, Sandra Mónica
Publicado:	2005
Materias:	Biosorption Exopolysaccharide Heavy metal Paenibacillus polymyxa Cells Heavy metals Microbiology Pollution Sorption Langmuir models Biotechnology Posibacteria
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09593993_v21_n6-7_p1157_PradoAcosta http://hdl.handle.net/20.500.12110/paper_09593993_v21_n6-7_p1157_PradoAcosta
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_09593993_v21_n6-7_p1157_PradoAcosta
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spelling	paper:paper_09593993_v21_n6-7_p1157_PradoAcosta2023-06-08T15:56:52Z Biosorption of copper by Paenibacillus polymyxa cells and their exopolysaccharide Prado Acosta, Mariano Battaglini, Fernando Ruzal, Sandra Mónica Biosorption Exopolysaccharide Heavy metal Paenibacillus polymyxa Cells Heavy metals Microbiology Pollution Sorption Biosorption Langmuir models Biotechnology Paenibacillus polymyxa Posibacteria Biosorption of heavy metals by gram-positive, non-pathogenic and non-toxicogenic Paenibacillus polymyxa P13 was evaluated. Copper was chosen as a model element because it is a pollutant originated from several industries. An EPS (exopolysaccharide)-producing phenotype exhibited significant Cu(II) biosorption capacity. Under optimal assay conditions (pH 6 and 25°C), the adsorption isotherm for Cu(II) in aqueous solutions obeyed the Langmuir model. A high q value (biosorption capacity) was observed with whole cells (q max=112 mgCu g-1). EPS production was associated with hyperosmotic stress by high salt (1 M NaCl), which led to a significant increase in the biosorption capacity of whole cells (q max=150 mgCu g -1). Biosorption capacity for Cu(II) of the purified EPS was investigated. The maximum biosorption value (q) of 1602 mg g-1 observed with purified EPS at 0.1 mg ml-1 was particularly promising for use in field applications. © Springer 2005. Fil:Prado Acosta, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Battaglini, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ruzal, S.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09593993_v21_n6-7_p1157_PradoAcosta http://hdl.handle.net/20.500.12110/paper_09593993_v21_n6-7_p1157_PradoAcosta
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Biosorption Exopolysaccharide Heavy metal Paenibacillus polymyxa Cells Heavy metals Microbiology Pollution Sorption Biosorption Langmuir models Biotechnology Paenibacillus polymyxa Posibacteria
spellingShingle	Biosorption Exopolysaccharide Heavy metal Paenibacillus polymyxa Cells Heavy metals Microbiology Pollution Sorption Biosorption Langmuir models Biotechnology Paenibacillus polymyxa Posibacteria Prado Acosta, Mariano Battaglini, Fernando Ruzal, Sandra Mónica Biosorption of copper by Paenibacillus polymyxa cells and their exopolysaccharide
topic_facet	Biosorption Exopolysaccharide Heavy metal Paenibacillus polymyxa Cells Heavy metals Microbiology Pollution Sorption Biosorption Langmuir models Biotechnology Paenibacillus polymyxa Posibacteria
description	Biosorption of heavy metals by gram-positive, non-pathogenic and non-toxicogenic Paenibacillus polymyxa P13 was evaluated. Copper was chosen as a model element because it is a pollutant originated from several industries. An EPS (exopolysaccharide)-producing phenotype exhibited significant Cu(II) biosorption capacity. Under optimal assay conditions (pH 6 and 25°C), the adsorption isotherm for Cu(II) in aqueous solutions obeyed the Langmuir model. A high q value (biosorption capacity) was observed with whole cells (q max=112 mgCu g-1). EPS production was associated with hyperosmotic stress by high salt (1 M NaCl), which led to a significant increase in the biosorption capacity of whole cells (q max=150 mgCu g -1). Biosorption capacity for Cu(II) of the purified EPS was investigated. The maximum biosorption value (q) of 1602 mg g-1 observed with purified EPS at 0.1 mg ml-1 was particularly promising for use in field applications. © Springer 2005.
author	Prado Acosta, Mariano Battaglini, Fernando Ruzal, Sandra Mónica
author_facet	Prado Acosta, Mariano Battaglini, Fernando Ruzal, Sandra Mónica
author_sort	Prado Acosta, Mariano
title	Biosorption of copper by Paenibacillus polymyxa cells and their exopolysaccharide
title_short	Biosorption of copper by Paenibacillus polymyxa cells and their exopolysaccharide
title_full	Biosorption of copper by Paenibacillus polymyxa cells and their exopolysaccharide
title_fullStr	Biosorption of copper by Paenibacillus polymyxa cells and their exopolysaccharide
title_full_unstemmed	Biosorption of copper by Paenibacillus polymyxa cells and their exopolysaccharide
title_sort	biosorption of copper by paenibacillus polymyxa cells and their exopolysaccharide
publishDate	2005
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09593993_v21_n6-7_p1157_PradoAcosta http://hdl.handle.net/20.500.12110/paper_09593993_v21_n6-7_p1157_PradoAcosta
work_keys_str_mv	AT pradoacostamariano biosorptionofcopperbypaenibacilluspolymyxacellsandtheirexopolysaccharide AT battaglinifernando biosorptionofcopperbypaenibacilluspolymyxacellsandtheirexopolysaccharide AT ruzalsandramonica biosorptionofcopperbypaenibacilluspolymyxacellsandtheirexopolysaccharide
_version_	1768542654084153344

Biosorption of copper by Paenibacillus polymyxa cells and their exopolysaccharide

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