Effect of aquaculture salinity on nitrification and microbial community in moving bed bioreactors with immobilized microbial granules
The novel immobilized microbial granules (IMG) shows a significant effect of nitrification for freshwater aquaculture. However, there is lack of evaluation study on the performance of nitrification at high salinity due to the concentration of recycled water or seawater utilization. A laboratory scal...
| Main Authors: | , , , , , , |
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| Format: | Article |
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Elsevier Ltd.
2020
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| _version_ | 1796864226084519936 |
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| author | Gao, Y. Wang, X. Li, J. Lee, C. T. Ong, P. Y. Zhang, Z. Li, C. |
| author_facet | Gao, Y. Wang, X. Li, J. Lee, C. T. Ong, P. Y. Zhang, Z. Li, C. |
| author_sort | Gao, Y. |
| collection | ePrints |
| description | The novel immobilized microbial granules (IMG) shows a significant effect of nitrification for freshwater aquaculture. However, there is lack of evaluation study on the performance of nitrification at high salinity due to the concentration of recycled water or seawater utilization. A laboratory scale moving bed bioreactor (MBBR) with IMG was tested on recycled synthetic aquaculture wastewater for the nitrification at 2.5 mg/L NH3-N daily. The results indicated that IMG showed a high salinity tolerance and effectively converted ammonia to nitrate up to 92% at high salinity of 35.0 g/L NaCl. As salinity increased from near zero to 35.0 g/L, the microbial activity of nitrite oxidation bacteria (NOB) in the IMG decreased by 86.32%. The microbial community analysis indicated that salinity significantly influenced the community structure. It was found that Nitrosomonas sp. and Nitrospira sp. were the dominant genera for ammonia oxidation bacteria (AOB) and NOB respectively at different salinity levels. |
| first_indexed | 2024-03-05T20:38:41Z |
| format | Article |
| id | utm.eprints-86350 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T20:38:41Z |
| publishDate | 2020 |
| publisher | Elsevier Ltd. |
| record_format | dspace |
| spelling | utm.eprints-863502021-02-24T00:09:06Z http://eprints.utm.my/86350/ Effect of aquaculture salinity on nitrification and microbial community in moving bed bioreactors with immobilized microbial granules Gao, Y. Wang, X. Li, J. Lee, C. T. Ong, P. Y. Zhang, Z. Li, C. TP Chemical technology The novel immobilized microbial granules (IMG) shows a significant effect of nitrification for freshwater aquaculture. However, there is lack of evaluation study on the performance of nitrification at high salinity due to the concentration of recycled water or seawater utilization. A laboratory scale moving bed bioreactor (MBBR) with IMG was tested on recycled synthetic aquaculture wastewater for the nitrification at 2.5 mg/L NH3-N daily. The results indicated that IMG showed a high salinity tolerance and effectively converted ammonia to nitrate up to 92% at high salinity of 35.0 g/L NaCl. As salinity increased from near zero to 35.0 g/L, the microbial activity of nitrite oxidation bacteria (NOB) in the IMG decreased by 86.32%. The microbial community analysis indicated that salinity significantly influenced the community structure. It was found that Nitrosomonas sp. and Nitrospira sp. were the dominant genera for ammonia oxidation bacteria (AOB) and NOB respectively at different salinity levels. Elsevier Ltd. 2020-02 Article PeerReviewed Gao, Y. and Wang, X. and Li, J. and Lee, C. T. and Ong, P. Y. and Zhang, Z. and Li, C. (2020) Effect of aquaculture salinity on nitrification and microbial community in moving bed bioreactors with immobilized microbial granules. Bioresource Technology, 297 . ISSN 0960-8524 https://dx.doi.org/10.1016/j.biortech.2019.122427 DOI:10.1016/j.biortech.2019.122427 |
| spellingShingle | TP Chemical technology Gao, Y. Wang, X. Li, J. Lee, C. T. Ong, P. Y. Zhang, Z. Li, C. Effect of aquaculture salinity on nitrification and microbial community in moving bed bioreactors with immobilized microbial granules |
| title | Effect of aquaculture salinity on nitrification and microbial community in moving bed bioreactors with immobilized microbial granules |
| title_full | Effect of aquaculture salinity on nitrification and microbial community in moving bed bioreactors with immobilized microbial granules |
| title_fullStr | Effect of aquaculture salinity on nitrification and microbial community in moving bed bioreactors with immobilized microbial granules |
| title_full_unstemmed | Effect of aquaculture salinity on nitrification and microbial community in moving bed bioreactors with immobilized microbial granules |
| title_short | Effect of aquaculture salinity on nitrification and microbial community in moving bed bioreactors with immobilized microbial granules |
| title_sort | effect of aquaculture salinity on nitrification and microbial community in moving bed bioreactors with immobilized microbial granules |
| topic | TP Chemical technology |
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