Flocculation of fine fluorite particles with corynebacterium xerosis
Rev. microbiol
;
30(3): 225-30, jul.-set. 1999. ilus, tab, graf
Artículo
en Portugués, Inglés
| 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:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Partículas Inorgánicas
/
Corynebacterium
/
Flúor
Idioma:
Inglés
/
Portugués
Revista:
Rev. microbiol
Asunto de la revista:
Microbiologia
Año:
1999
Tipo del documento:
Artículo
País de afiliación:
Brasil
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