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处理废水的基于酸化的直接电解用于气生产和水的再利用
Ji-Hyung Han1, Jeongwook Bae2,3, Joohyun Lim2,3
1Jeju Global Research Centre, Korea Institute of Energy Research, 200 Haemajihaean-ro, Gujwa-eup, Jeju 63357, Republic of Korea.
Heliyon
|October 20, 2023
概括
经过处理的废水的直接电解产生气,并重新利用水. 与海水的酸化稳定了阴极潜力,提高了绿色的生产效率和水的循环性.
科学领域:
- 电化学 电化学 电化学
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 经过处理的废水的直接电解为气生产和水的再利用提供了途径.
- 演化反应 (HER) 增加了pH值,对阴极电位产生负转移,并阻碍了电解效率.
- 在经过处理的废水中低Mg2+离子度限制了自然酸化.
研究的目的:
- 研究处理废水的直接电解,以生产绿色气.
- 开发一种在废水电解过程中稳定阴极电位的方法.
- 评估水的再利用和循环经济的可行性,在的生产原则.
主要方法:
- 用双极膜质子生成和无机沉的组合,处理的废水被酸化到pH值3.
- 添加了天然的海水,以提供足够的Mg2+离子来有效的酸化.
- 进行了电解,监测了100小时内阴极电位,法拉代效率和沉物特性.
主要成果:
- 酸化到pH 3保持了稳定的阴极电位超过100小时.
- 阴极上的无机沉量增加并没有对性能或生产效率产生负面影响.
- 酸性条件减少了有机物对阴极沉积物的吸附.
- 该方法在低质量的水电解中表现出更好的性能和稳定性.
结论:
- 酸化对于提高处理废水电解的性能和稳定性至关重要.
- 将经过处理的废水电解与海水相结合,为绿色生产提供了一个可持续的技术.
- 这种方法支持水的弹性,并有助于水资源的循环经济.
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