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Updated: Jun 27, 2025

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Electrochemically and Bioelectrochemically Induced Ammonium Recovery
Published on: January 22, 2015
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同时稳定尿素和从来源分离的新鲜尿液中恢复氧化物,以阳极为基础的过氧化物生产电化学细胞中的
Philip H Arve1, Marc Mason1, Dyllon G Randall2
1Department of Environmental Engineering and Earth Sciences, Clemson University, Clemson, SC, USA.
Water research
|May 1, 2024
概括
这项研究介绍了一种用于从尿液中回收和的新型电化学细胞. 该系统使用阳极和碳阴极来沉酸盐并稳定尿素.
科学领域:
- 环境科学 环境科学
- 电化学 电化学 电化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 尿液含有有价值的营养物质,如 (N) 和 (P),可以回收和回收利用.
- 目前用于从尿液中回收营养的方法在效率和不同营养形式的同时回收方面面临挑战.
研究的目的:
- 通过使用一种新的电化学细胞,研究从源分离的尿液中恢复N和P.
- 优化电化学过程,同时回收氨 (NH3) 和酸盐 (PO43-),稳定尿素.
主要方法:
- 使用了一种新型电化学电池,配有 (Mg) 阳极和基于碳的气体扩散阴极.
- 操纵pH驱动的沉用于酸盐回收.
- 采用电化学合成的过氧化 (H2O2) 来稳定尿素和用于NH3回收的 struvite沉.
主要成果:
- 酸盐恢复是通过pH驱动的降水实现的.
- 使用阳极中的Mg,可以将氨回收为 struvite.
- 使用电化学合成的H2O2实现了尿素稳定,其度和pH值与电流密度成比例.
- 在较低的电流密度 (pH < 9.2) 发生了以 struvite 的形式同时 NH3 和 PO43- 沉.
- 较高的电流密度 (pH>9.2) 有利于尿素稳定和酸盐沉作为和酸盐,但减少了NH3作为 struvite 的回收.
结论:
- 电化学电池通过沉有效地从尿液中回收.
- 通过控制电流密度来控制的回收,以平衡氨沉作为 struvite 和尿素稳定通过 H2O2.2.
- 这项技术为尿液中的营养物质回收提供了一个有希望的方法,为循环经济做出了贡献.
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