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Electrochemically and Bioelectrochemically Induced Ammonium Recovery

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合酸盐和树脂再生与电化学生产

Li Ling¹, Weiquan Li¹, Yingkai Chen¹

¹State Key Laboratory of Soil Pollution Control and Safety, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.

ACS applied materials & interfaces

|January 29, 2026

概括

一个新的混合系统将酸盐选择性离子交换树脂与电化学还原相结合,用于水处理. 这种方法有效地去除酸盐并产生氨,克服了传统方法的局限性.

科学领域:

环境化学环境化学
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:

水中的酸盐污染引发了重大的生态和健康问题.
电化学酸盐减 (ENRA) 是一个有前途的整治技术,但面临着诸如电极污染和复杂水中的低效率等挑战.
酸盐选择性离子交换树脂 (NAER) 可以预先缩酸盐,但需要化学再生,导致高试剂消耗.

研究的目的:

开发和评估一个混合提取-电催化-回收系统 (EERS),将ENRA与NAER集成在一起.
为了解决酸盐整治和氨生产的独立ENRA和NAER的局限性.
为了证明一种可持续和有效的方法来处理酸盐污染的水.

主要方法:

开发一种混合系统,将NAER用于酸盐提取和ENRA用于氨转化相结合.
在模拟废水和真实酸盐污染的地下水中,在多个循环中测试EERS.
评估酸盐吸收效率,酸盐去除,氨产量和系统稳定性.

主要成果:

在模拟废水中,EERS在三个循环中证明了稳定的酸盐脱吸效率 (76.5±1.3%),超过了化学再生.
在实际的地下水中,EERS实现了显著的酸盐丰富 (∼9.5倍) 和高去除效率 (86-100%),每周期产生>900 mg L-1 氨.
该系统证实了树脂和电极的结构完整性,验证了其在复杂的水矩阵中的强度.

结论:

集成的EERS为分散的酸盐整治和氨生产提供了一个可扩展和可持续的平台.
这种混合方法通过连续的消吸剂再生和电化学转换来最大限度地降低试剂消耗.
在复杂的水性环境中,EERS有效地克服了电极污染和能源效率低下的挑战.

关键词:

阴极缩放的缩放方式电化学酸盐降解电化学酸盐降解电化学再生的电化学再生亚酸盐吸附吸附方式酸盐丰富酸盐的丰富方法

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