Consulta: subjectFacets:"Ammonia-oxidizing bacteria"
Registros recuperados: 2
Data/hora: 01/06/2024 18:12:07

Immobilization of ammonia-oxidizing bacteria by polyvinyl alcohol and sodium alginate
Provedor de dados: Brazilian Journal of Microbiology
Autores: Dong,Yuwei; Zhang,Yanqiu; Tu,Baojun.
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...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammonia-oxidizing bacteria; Immobilization; Polyvinyl alcohol; Sodium alginate; Ammonia oxidation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300515

Abundance and diversity of ammonia-oxidizing bacteria in relation to ammonium in a Chinese shallow eutrophic urban lake
Provedor de dados: Brazilian Journal of Microbiology
Autores: Qiu,Shanlian; Chen,Guoyuan; Zhou,Yiyong.
The measures of most-probable-number and restriction fragment length polymorphism analysis were used to analyze the abundance and diversity of ammonia-oxidizing bacteria in sediment of a Chinese shallow eutrophic urban lake (Lake Yuehu). Among the 5 sampling sites, ammonia concentration in interstitial water was positively proportional not only to the content of organic matter, but also to ammonia-oxidizing bacteria numbers (at a magnitude of 10(5) cells g-1 dry weight) in sediment significantly. Furthermore, the diversity of ammonia-oxidizing bacteria were determined by means of PCR primers targeting the amoA gene with five gene libraries created and restriction pattern analysis. The 13 restriction patterns were recorded with 4 ones being common among all...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammonia-oxidizing bacteria; Abundance; AmoA; Diversity.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000100031