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Immobilization of ammonia-oxidizing bacteria by polyvinyl alcohol and sodium alginate

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%;...

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Detalles Bibliográficos
Autores principales: Dong, Yuwei, Zhang, Yanqiu, Tu, Baojun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5498440/
https://www.ncbi.nlm.nih.gov/pubmed/28245966
http://dx.doi.org/10.1016/j.bjm.2017.02.001
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author Dong, Yuwei
Zhang, Yanqiu
Tu, Baojun
author_facet Dong, Yuwei
Zhang, Yanqiu
Tu, Baojun
author_sort Dong, Yuwei
collection PubMed
description 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.
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spelling pubmed-54984402017-07-18 Immobilization of ammonia-oxidizing bacteria by polyvinyl alcohol and sodium alginate Dong, Yuwei Zhang, Yanqiu Tu, Baojun Braz J Microbiol Environmental Microbiology 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. Elsevier 2017-02-15 /pmc/articles/PMC5498440/ /pubmed/28245966 http://dx.doi.org/10.1016/j.bjm.2017.02.001 Text en © 2017 Sociedade Brasileira de Microbiologia. Published by Elsevier Editora Ltda. http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Environmental Microbiology
Dong, Yuwei
Zhang, Yanqiu
Tu, Baojun
Immobilization of ammonia-oxidizing bacteria by polyvinyl alcohol and sodium alginate
title Immobilization of ammonia-oxidizing bacteria by polyvinyl alcohol and sodium alginate
title_full Immobilization of ammonia-oxidizing bacteria by polyvinyl alcohol and sodium alginate
title_fullStr Immobilization of ammonia-oxidizing bacteria by polyvinyl alcohol and sodium alginate
title_full_unstemmed Immobilization of ammonia-oxidizing bacteria by polyvinyl alcohol and sodium alginate
title_short Immobilization of ammonia-oxidizing bacteria by polyvinyl alcohol and sodium alginate
title_sort immobilization of ammonia-oxidizing bacteria by polyvinyl alcohol and sodium alginate
topic Environmental Microbiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5498440/
https://www.ncbi.nlm.nih.gov/pubmed/28245966
http://dx.doi.org/10.1016/j.bjm.2017.02.001
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