通过回收-减少离子度极化淡化提升淡水的提取盐
Myeonghyeon Cho1, Seokhee Han1, Seohyun Lee2
1Department of Future Convergence Engineering, Kongju National University, Cheonan 31080, Republic of Korea.
Membranes
|March 27, 2024
概括
一种新的回收降低离子度极化 (ICP) 淡化方法可以实现高达99%的盐分去除,大大改善了传统的电透析以生产超纯水,耗能更低.
科学领域:
- 电化学工程 电化学工程
- 水处理技术水处理技术
- 材料科学 材料科学 材料科学
背景情况:
- 电膜系统对于低度淡化和超纯水生产至关重要.
- 电透析 (ED) 和离子度极化 (ICP) 是已确定的方法,但需要改善盐去除比率 (SRR).
研究的目的:
- 研究用于低度海水淡化的电膜系统.
- 建议和评估一个恢复减少的ICP战略,以提高SRR.
- 分析导电性,离子耗尽区和性能指标之间的相关性.
主要方法:
- 对电透析和两种ICP配置 (ICP_H和ICP_Q) 的实验研究,其NaCl度各不相同 (0.110毫米).
- 开发和测试一个恢复减少的ICP战略.
- 测量导电性变化,离子耗尽区厚度,盐去除比 (SRR),电流效率 (CE) 和每离子去除能量 (EPIR).
主要成果:
- 在ED和ICP系统中发现了导电性变化和离子耗尽区厚度之间的相关性.
- 恢复减少的ICP海水淡化实现了高达99%的SRR,超过ED的典型~50%.
- 在类似的SRR中,恢复减少的ICP显示了可比的CE,但低于ED的EPIR.
结论:
- 减少回收的ICP策略在SRR中为低度淡化提供了显著的优势.
- 这种ICP方法比传统的ED更节能,可以实现高盐分的去除.
- 通过ICP调整脱盐出口宽度是电膜系统中高SRR的首选策略.
相关概念视频
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