Proposals for wastewater treatment by applying flocculating activity of cross-linked poly-gamma-glutamic acid.
J Biosci Bioeng
; 99(3): 245-51, 2005 Mar.
Article
em En
| MEDLINE
| ID: mdl-16233784
ABSTRACT
Cross-linked poly-gamma-glutamic acid (C-L gamma-PGA) markedly purified polluted water collected from rivers and ponds by flocculation and precipitation. This effect of C-L gamma-PGA occasionally required pretreatment with polyaluminum chloride (PAC). Components of polluted water in rivers or ponds are generally thought to be clay minerals, microorganisms and chemical compounds. In this study, the flocculating activities of C-L gamma-PGA against suspensions of bentonite, diatomaceous earth, Escherichia coli and Mycrocystis aeruginosa, and against solutions of crystal violet and bisphenol A were investigated. The mode of action of C-L gamma-PGA is thought to be based on electrostatic interaction between flocculants, C-L gamma-PGA and PAC, and the surface of polluted water components, which may lead to neutralization of the zeta-potential of those components.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ácido Poliglutâmico
/
Bacillus subtilis
/
Poluentes Químicos da Água
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Poluição Química da Água
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Purificação da Água
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Fracionamento Químico
/
Resíduos Industriais
Tipo de estudo:
Evaluation_studies
Idioma:
En
Ano de publicação:
2005
Tipo de documento:
Article