Immobilization of ammonia-oxidizing bacteria by polyvinyl alcohol and sodium alginate
Braz. j. microbiol
;
48(3): 515-521, July-Sept. 2017. graf
Artículo
en Inglés
| LILACS
| ID: biblio-889145
ABSTRACT
Abstract Ammonia-oxidizing bacteria were immobilized by polyvinyl alcohol (PVA) and sodium alginate. The immobilization conditions and ammonia oxidation ability of the immobilized bacteria were investigated. The following immobilization conditions were observed to be optimal: PVA, 12%; sodium alginate, 1.1%; calcium chloride, 1.0%; inoculum concentration, 1.3 immobilized balls/mL of immobilized medium; pH, 10; and temperature, 30 °C. The immobilized ammonia-oxidizing bacteria exhibited strong ammonia oxidation ability even after being recycled four times. The ammonia nitrogen removal rate of the immobilized ammonia-oxidizing bacteria reached 90.30% under the optimal immobilization conditions. When compared with ammonia-oxidizing bacteria immobilized by sodium alginate alone, the bacteria immobilized by PVA and sodium alginate were superior with respect to pH resistance, the number of reuses, material cost, heat resistance, and ammonia oxidation ability.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Bacterias
/
Técnicas Microbiológicas
/
Amoníaco
Tipo de estudio:
Estudios de evaluación
Idioma:
Inglés
Revista:
Braz. j. microbiol
Asunto de la revista:
Microbiologia
Año:
2017
Tipo del documento:
Artículo
/
Documento de proyecto
País de afiliación:
China
Institución/País de afiliación:
Xuzhou University of Technology/CN
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