[Biosorption of Pb2+ by Bacillus cereus biomass].
Huan Jing Ke Xue
; 25(2): 166-9, 2004 Mar.
Article
em Zh
| MEDLINE
| ID: mdl-15202257
ABSTRACT
In this paper, the potentiometric titration and the sorption experiments were applied to investigate the biosorption behavior of Pb2+ on Bacillus cereus biomass. It was shown that the biosorption capacities increased with increasing pH from 3 to 7, and the higher concentration of the biomass in solution was favorable to the sorption of Pb2+. Langmuir model simulated the adsorption data of Pb2+ ion very well, and the saturated sorption capacity for Pb2+ ion achieved 36.7 mg.g-1 dry biomass. According to the result of the potentiometric titration, the Gran plots for the hydroxide back-titration of biomass suspension systems were utilized to derive the specific volume of titrant at the equivalence point (Ve), furthermore, the total surface site concentration was calculated.
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Base de dados:
MEDLINE
Assunto principal:
Bacillus cereus
/
Biomassa
/
Chumbo
Idioma:
Zh
Ano de publicação:
2004
Tipo de documento:
Article