在废水中处理有机物使用电生成气态氧化剂
Leticia Mirella da Silva1,2, Ismael F Mena2, Cristina Saez2
1São Carlos Institute of Chemistry, University of São Paulo, P.O. Box 780, CEP 13560-970 São Carlos, SP, Brazil.
概括
使用气态氧化剂的间接电解是一种竞争性和节能的方法,用于处理稀释废水,优于直接电化学氧化,用于消除持久污染物.
科学领域:
- 环境化学环境化学
- 电化学 电化学 电化学
- 废水处理 废水处理
背景情况:
- 直接的电化学氧化和间接的电解是废水处理的方法.
- 污染物在废水中的低度往往导致直接电化学过程的低效.
研究的目的:
- 为了比较直接电化学氧化与间接电解的性能,以气体氧化剂为媒介,用于稀释废水处理.
- 为了评估这些过程在甲基基的降解中的能源消耗.
主要方法:
- 使用混合金属氧化物 (MMO) 电极的电解用于直接氧化和间接中介氧化.
- 在中介过程中,二氧化 (ClO2) 用作气体氧化剂.
- 测量了从水溶液中完全去除甲基的能量消耗.
主要成果:
- 以二氧化为媒介的间接电解证明了直接氧化的可行性和竞争力.
- 使用相同的阳极材料优化氧化剂生产,最大限度地降低了质量转移限制.
- 从500毫升溶液中完全去除0.1毫米的甲基,使用ClO2获得50Wh,显著优于直接电解.
结论:
- 介导氧化工艺为处理废水中的低度持久污染物提供了有效的替代方案.
- 电化学技术可以有效地应用于废水整治,特别是当直接方法效率低下时.
- 这项研究强调了间接电解在具有成本效益和效率的废水处理方面的潜力.
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