Phenol-driven ammonium recovery from coal chemical wastewater in a bioelectrochemical system (BES).
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| Title: | Phenol-driven ammonium recovery from coal chemical wastewater in a bioelectrochemical system (BES). |
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| Authors: | Zeng, Ran1,2 (AUTHOR), Yang, Li-Hui1,3 (AUTHOR), Zhai, Si-Yuan1,4 (AUTHOR) xjhmzsy0816@163.com, Liu, Cheng-Yan5 (AUTHOR), Lin, Na6 (AUTHOR), Ou-Yang, Qing-Hua6 (AUTHOR), Xu, Yan-Hua1 (AUTHOR), Wang, Ai-Jie2 (AUTHOR), Cheng, Hao-Yi1,2 (AUTHOR) chenghaoyihit@126.com |
| Source: | Journal of Hazardous Materials. Jun2025, Vol. 490, pN.PAG-N.PAG. 1p. |
| Subjects: | Energy conservation, Wastewater treatment, Operating costs, Chemical systems, Phenol |
| Abstract: | Bioelectrochemical systems (BES) have gained considerable attention in the past decade as a potentially sustainable and cost-effective method for coal chemical wastewater (CCW) treatment. However, a scarcity of studies focusing on the recovery NH 4 +-N in the recycling treatment of CCW via BES technology. In this study, a BES-ammonium recovery system (BES-ARS) was proposed to remove phenol and NH 4 +-N simultaneously, while NH 4 +-N was further recovered in a downstream recovery unit. Through systematic evaluation, we identified optimal condition for both phenol and NH 4 +-N removal. Specifically, an influent phenol-to-ammonium ratio of 2.0 was found to be ideal for maximizing simultaneous removal efficiency. Additionally, an evaluation of the nitrogen distribution showed that 97.9 % of NH 4 +-N migrated to the cathode chamber, with 82.5 % of NH 4 +-N being recovered in the absorbent under optimal condition. Furthermore, the solution not only reduces operational costs by up to 68 % compared to conventional treatments, but also conserves energy. This study presents an efficient and environmentally friendly treatment method for treating CCW, while recovering NH 4 +-N as a valuable resource. [Display omitted] • An in-depth evaluation of the nitrogen distribution in the system was conducted. • A trade-off between phenol-to-ammonium ratio and removal of phenol and ammonia was assessed. • The total cost for coal chemical wastewater treatment using bioelectrochemical system was estimated. • This solution is cost-effective and sustainable for treating coal chemical wastewater. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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