Rapid and efficient nitrogen removal by a novel heterotrophic nitrification-aerobic denitrification bacteria Marinobacterium maritimum 5-JS in aquaculture wastewater: Performance and potential applications.
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| Title: | Rapid and efficient nitrogen removal by a novel heterotrophic nitrification-aerobic denitrification bacteria Marinobacterium maritimum 5-JS in aquaculture wastewater: Performance and potential applications. |
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| Authors: | Wang, Fu-Rong1,2,3 (AUTHOR), Feng, Shi-Yu1,4 (AUTHOR), Liang, Shuai1,2,3 (AUTHOR), Du, Wei-Yu1,2,3 (AUTHOR), Wang, Long-Qi1,2,3 (AUTHOR), Zhang, Yu-Wei1,2,3 (AUTHOR), Ren, Jia-Yu1,2,3 (AUTHOR), Gao, Shuang1,2,3 (AUTHOR), Zhu, Yu-Jie1,2,3 (AUTHOR), Cong, Yu-Ting1,2,3 (AUTHOR), Wang, Li1,2,3 (AUTHOR), Gu, Jing1,2,3 (AUTHOR), Wang, Yuan1,2,3 (AUTHOR), Wang, Hua1,2,3 (AUTHOR) wanghua@dlou.edu.cn, Lu, Ya-Nan1,2,3 (AUTHOR) luyanan@dlou.edu.cn, Wang, Lian-Shun1,2,3 (AUTHOR) wanglianshun@dlou.edu.cn, Yang, Guo-Jun1,2,3 (AUTHOR) ygj@dlou.edu.cn |
| Source: | Environmental Research. Jul2025, Vol. 276, pN.PAG-N.PAG. 1p. |
| Subjects: | Nitrogen removal (Sewage purification), Sustainability, Wastewater treatment, Denitrification, Sea cucumbers |
| Abstract: | Efficient nitrogen removal from aquaculture wastewater is crucial for environmental sustainability. A novel strain, Marinobacterium maritimum 5-JS, exhibiting HN-AD capabilities, was isolated from a sea cucumber aquaculture pond. This strain demonstrated remarkable nitrogen removal efficiencies, achieving nearly 100% elimination of NH 4 +-N, NO 3 −-N and NO 2 −-N within 18 h. Strain 5-JS preferentially utilizes NH 4 +-N in simultaneous nitrification and denitrification processes, with optimal removal achieved using sodium citrate as a carbon source, a C/N ratio of 11, pH 8.0, and at a temperature of 30 °C. The metabolic pathway of strain 5-JS was elucidated, indicating its adaptability to high concentrations of Mg2+, Fe2+, and Mn2+ (up to 50 mg/L). When introduced into mariculture wastewater, strain 5-JS rapidly reduced concentrations of all three nitrogen compounds to undetectable levels within 8 h. These findings highlight the exceptional nitrogen removal capabilities of strain 5-JS and its potential for application in the biological treatment of aquaculture wastewater. [Display omitted] • Isolated strain 5-JS excels in heterotrophic nitrification and aerobic denitrification. • Strain 5-JS pathway efficiently converts NH 4 +-N to N 2 through sequential nitrogen transformations. • Optimal conditions allow for 100 % NH 4 +-N removal within 16 h. • Adding 3 % 5-JS bacterial solution removed 100 % of tri-nitrogen from wastewater in 8 h. • Strain 5-JS showed robust adaptability and efficient nitrogen removal in diverse environments. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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