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通过增强微生物电解细胞从废水中回收:阴极修改和循环操作

Xinyu Lu¹, Wei Pei¹, Xiang Liu¹

¹Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China.

Environmental research

|November 3, 2025

概括

微生物电解细胞 (MEC) 使用修改过的阴极有效地回收 (P). 这种可持续的方法通过优化阴极材料和阴解质循环来提高P回收,以回收资源.

科学领域:

环境科学环境科学
电化学电化学电化学
材料科学材料科学材料科学

背景情况:

(P) 是面临资源短缺的关键营养素.
微生物电解细胞 (MECs) 提供了一个有前途的方法来恢复P作为 struvite.
传统的MEC需要添加,增加了操作复杂性.

研究的目的:

为了提高MEC的P回收效率.
为了研究改造的不钢网格 (SSM) 阴极与--锡 (Ni-Co-Sn) 复合材料的影响.
评估阴解体循环对P回收的影响.

主要方法:

用Ni-Co-Sn复合材料通过电解方式对SSM阴极进行修改.
优化电位参数:电流密度,持续时间,温度和Ni:Co:Sn分子离子比.
修改过的阴极和阴解质循环的MEC循环运行.

主要成果:

优化的Ni-Co-Sn-SSM阴极降低了电荷转移阻力,并在12小时内达到8.85的pH值.
最初的P回收效率在修改后的阴极上达到87.5%.
循环操作在8小时内实现了96.4%的P恢复,在12小时内达到99.9%.

结论:

Ni-Co-Sn-SSM阴极改造显著提高了MEC中的P回收效率.
增强的吸附/脱附,OH生成和催化活性有助于改善P的回收.
阴极改造与阴解体循环相结合,为P资源回收提供了一个可持续的解决方案.

关键词:

循环运行操作循环运行微生物电解细胞的电解.- - - 锡 - - - 锡的回收使用方法斯特鲁维特 (Struvite) 是一种石头.

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