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对于长期运行流电极电容离离子化 (FCDI):优化操作参数和流电极的再生

Wanni Zhang¹, Wenchao Xue¹, Chunpeng Zhang²

¹Department of Energy, Environment and Climate Change, School of Environment, Resources and Development, Asian Institute of Technology, P.O. Box 4, Klong Luang, Pathumthani, 12120, Thailand.

|February 5, 2024

概括

这项研究优化了流电极电容脱离离子 (FCDI) 用于低盐度水的淡化. 优化的系统在60小时内表现出稳定的性能和高再生效率.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.

背景情况:

容量脱离离子 (CDI) 是水淡化的一个有前途的技术.
流电极电容脱离离 (FCDI) 在连续运行和电极再生方面具有优势.
优化操作参数对于提高FCDI效率和稳定性至关重要.

研究的目的:

系统地优化FCDI系统中的关键操作参数,以实现低盐度的料水淡化.
根据参数变化来解释影响FCDI性能的潜在机制.
评估优化的FCDI系统的长期运行稳定性和再生潜力.

主要方法:

系统地优化操作参数,包括电压,电极含量,电解质度和流量.
灵敏度分析以确定影响最大的操作参数.
在单通模式下进行长期运行测试,以评估稳定性和再生.

主要成果:

确定了1.0g L-1 NaCl料水的最佳参数:1.8V,2.0%重量%活性炭,10.0g L-1 电解质,80mL min-1料水流量和60mL min-1电极流量.
操作电压被确定为影响FCDI性能的主导参数.
该系统在多个循环中保持了40-60%的海水淡化效率,并在60小时运行期间实现了超过99.8%的再生和效率恢复.

结论:

优化的FCDI系统证明了低盐度料水的有效和稳定的海水淡化.
FCDI系统具有优异的长期运行潜力,具有高的再生效率.
了解参数对导电性,电双层和度极化的影响是FCDI性能的关键.

关键词:

电极再生电极的再生流电极电容脱离电离 (FCDI) 是一种电容脱离电离技术.长期运行长期运行操作参数操作参数灵敏度分析是一种灵敏度分析.

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