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Updated: Feb 11, 2026

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通过无膜电化学分离与液化床结晶相结合的高效酸盐回收:长期操作和全面的脱膜化解决方案
Jie Zhou1, Yunxian Liu1, Yuexin Chang1
1Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
Environmental science & technology
|February 10, 2026
概括
本研究介绍了一种无膜电化学分离和流化床结晶工艺,用于高效的酸盐去除和回收. 这种新型系统实现了高酸盐去除和没有膜的稳定运行,为资源回收提供了实际的解决方案.
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:
- 传统的电化学酸盐去除使用膜,面临诸如阴极故障和低效率等挑战.
- 现有的方法难以长期稳定,需要膜维护或更换.
研究的目的:
- 开发一种新的无膜电化学分离 (MFES) 和流化床结晶 (FB) 工艺,用于酸盐的去除和回收.
- 克服传统方法的局限性,包括膜依赖性和阴极不稳定性.
- 研究电化学资源回收中的"时空脱"的协同机制.
主要方法:
- 实施了无膜电化学分离 (MFES) 装置,使用阴极边界层送用于OH-分离.
- 集成的MFES具有流化床结晶 (FB) 系统,用于加速无形酸 (ACP) 吸附和回收.
- 经过测试的酸盐 (5-60毫克·L-1) 和Ca2+ (10-100毫克·L-1) 的去除,耐受干扰离子 (Mg2+,HCO3-,NH4+).
- 评估了不钢阴极的长期运行稳定性 (>700小时).
主要成果:
- 在没有膜的MFES单元中实现了>96.0%的酸盐去除.
- 在700小时的连续运行中保持了>80.0%的酸盐去除.
- 综合MFES-FB工艺的酸盐回收率为73.8%,能源消耗为55.3千瓦时·公斤P-1.
- 在不同的离子度和对常见干扰离子的耐受性方面表现出强大的性能.
结论:
- 无膜电化学分离和流化床结晶过程为酸盐的去除和回收提供了稳定,高效和无膜的方法.
- 该研究强调了开发系统的实际可扩展性和长期运行可行性.
- 鉴定到的"时空脱"机制为设计先进的电化学资源回收系统提供了新的见解.
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