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Immobilization of ammonia-oxidizing bacteria by polyvinyl alcohol and sodium alginate
Dong, Yuwei; Zhang, Yanqiu; Tu, Baojun.
Afiliação
  • Dong, Yuwei; Xuzhou University of Technology. Xuzhou. China
  • Zhang, Yanqiu; China University of Mining and Technology. Xuzhou. China
  • Tu, Baojun; Xuzhou University of Technology. Xuzhou. China
Braz. J. Microbiol. ; 48(3): 515-521, jul.-set. 2017. graf
Article em En | VETINDEX | ID: vti-728617
Biblioteca responsável: BR68.1
Localização: BR68.1
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.(AU)
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Texto completo: 1 Base de dados: VETINDEX Idioma: En Revista: Braz. J. Microbiol. Ano de publicação: 2017 Tipo de documento: Article / Project document

Texto completo: 1 Base de dados: VETINDEX Idioma: En Revista: Braz. J. Microbiol. Ano de publicação: 2017 Tipo de documento: Article / Project document