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增强选择性NH₄⁺从废水中回收利用改造的焦化基流电极电容性去离子化

Chengsi Hou¹, Haotian Wu¹, Zhengwei Zhou¹

¹State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science & Engineering, Key Laboratory of Urban Water Supply, Water Saving and Water Environment Governance in the Yangtze River Delta of Ministry of Water Resources, Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, China.

|October 15, 2024

概括

这项研究开发了一种低成本的吸附电极,使用修饰的焦化石进行流电极电容性脱离离 (FCDI). 该FCDI系统有效地从废水中回收氨,提供可持续的资源回收战略.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
电化学电化学电化学

背景情况:

流电极电容脱离离 (FCDI) 是水处理的前景,但在电极选择性和成本方面面临挑战.
从废水中去除 (NH4+) 对于环境保护和资源回收至关重要.

研究的目的:

开发一种低成本的选择性电极材料,用于使用FCDI回收.
评估FCDI中修改过的热电极的性能,用于从废水中去除氨.
展示废水资源回收的可持续战略.

主要方法:

合成了一种新型的氨吸附电极,通过修改以乙烯基二胺三酸二盐 (EDTA-2Na) 修改热盐.
准备的流电极使用EDTA-化石和碳黑的混合物.
研究了FCDI从食品废弃物发酵超中回收氨的过程,分析了离子交换和跨膜选择性.
分离了富含氨的修改过热石,以作为肥料的潜在用途.

主要成果:

在EDTA-泽奥利特流电极显示出高的选择性和吸附能力NH.
对NH₄⁺而不是Na⁺的跨膜选择性达到了3.46.
在最佳条件下,从发酵超中提取了99.15%的NH₄+,并将95.92%的NH₄⁺储存在EDTA-zeolite中.
通过引力沉积证明了NH₄⁺丰富的岩的高效分离.

结论:

开发的低成本修改过的热电极是有效的选择性回收使用FCDI.
FCDI系统为废水资源回收提供了一种可持续和高效的方法,将废物转化为有价值的肥料.
这项技术解决了传统FCDI在废水处理应用中的局限性.

关键词:

氨的回收使用方法在EDTA-泽奥利特中.肥料肥料是一种肥料.流电极电容性去离子化流电极电容性去离子化选择性的选择性

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