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通过电工艺从尿液中恢复酸盐的增强策略

Hao Liu¹, Xinyang Li², Hong Yao²

¹School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.

|September 30, 2023

概括

这项研究揭示了尿液成分如何影响电过程 (MGP) 恢复酸盐. 用HCl预处理尿液显著提高MGP性能,实现超过95%的酸盐恢复为高纯度的 struvite.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
可持续工程可持续工程

背景情况:

从来源分离的尿液中恢复酸盐对于资源管理至关重要.
电过程 (MGP) 显示了酸盐回收的潜力.
对于尿基对MGP效率的影响的了解有限.

研究的目的:

通过MGP在合成和真实尿液中研究酸盐回收机制.
阐明主要尿成分 (NH4+,Cl-,HCO3-) 在MGP表现中的作用.
开发一个改进的MGP,以实现高效和可持续的酸盐回收.

主要方法:

在合成和真实尿液矩阵中研究了MGP的性能.
分析了受尿成分影响的Mg板块的腐蚀机制.
建议并测试了用HCl进行尿液预处理,以增强MGP.
在连续流反应堆中评估了改进的MGP.

主要成果:

尿液成分 (NH4+,Cl-,HCO3-) 通过不同的机制加速Mg板的腐蚀.
二碳酸盐与其他离子的存在可以因MgCO3形成和减少自由Mg2+而抑制MGP.
化预处理显著提高了当前的生产和酸盐回收.
改进的MGP实现了>95%的酸盐回收,在真实尿液中作为高纯度的斯特鲁维特.

结论:

了解尿基相互作用是优化MGP对酸盐回收的关键.
化预处理提供了一种可行的策略,以提高MGP的效率.
改进的MGP是一种可持续的,能源中立的方法,用于从尿液中恢复酸盐作为斯特鲁维特.

关键词:

加强战略加强战略的化工过程是的化工过程.矩阵效应是一个矩阵效应.酸盐的回收利用方法由来源分离的尿液.

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