Data/hora: 06/06/2024 18:33:34

Provedor de dados: | 58
País: | Brazil
Título: | Immobilization of ammonia-oxidizing bacteria by polyvinyl alcohol and sodium alginate
Autores: | Dong,Yuwei; Zhang,Yanqiu; Tu,Baojun.
Data: | 2017-07-01
Ano: | 2017
Palavras-chave: | Ammonia-oxidizing bacteria; Immobilization; Polyvinyl alcohol; Sodium alginate; Ammonia oxidation.
Resumo: | 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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300515
Editor: | Sociedade Brasileira de Microbiologia
Relação: | 10.1016/j.bjm.2017.02.001
Formato: | text/html
Fonte: | Brazilian Journal of Microbiology  v.48 n.3 2017
Fonte: | info:eu-repo/semantics/openAccess