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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%;...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2017
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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. |
format | Online Article Text |
id | pubmed-5498440 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
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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