Flocculation of fine fluorite particles with corynebacterium xerosis
Rev. microbiol
;
30(3): 225-30, jul.-set. 1999. ilus, tab, graf
Artigo
em Português, Inglês
| LILACS
| ID: lil-253777
ABSTRACT
The treatment of fine particles dispersed in liquids is common in several industries and especially important in mineral processing. The efficiency of settling operations can be susbstantially increased by flocculation. The aim of this work was to study the flocculation of fine fluorite particles by the bacterium Corynebacterium xerosis. Flocculation tests, microelectrophoresis measurements and optical microscopy were used to evaluate flocculation. The results showed that C. xerosis cells adhere to the fluorite surfaces promoting the aggregation of the particles. High quality flocs can be obtained rapidly at ph 7.0 using a cell concentration of 40 mg/l, considerably lower than previously reported in the literature. The results are discussed with reference to the surface characteristics of the mineral and of the microorganism.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Partículas Inorgânicas
/
Corynebacterium
/
Flúor
Idioma:
Inglês
/
Português
Revista:
Rev. microbiol
Assunto da revista:
Microbiologia
Ano de publicação:
1999
Tipo de documento:
Artigo
País de afiliação:
Brasil
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