在现场增强的H2O2电合成和通过侧面空气和改性阴极在电气-芬顿系统中通过液缩物降解
Fanbin Zhang1, Tinghui Li1, Zilong Zhang1
1Faculty of Environment and Life, Beijing University of Technology, No.100 Pingleyuan, Chaoyang District, Beijing 100124, China.
Waste management (New York, N.Y.)
|June 9, 2024
概括
一个新的侧向通风电化学反应器有效地利用改性石墨合成过氧化 (H2O2). 这种系统显著提高了H2O2的产量,并有效降解了垃圾填埋场的液,展示了其环境修复潜力.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
背景情况:
- 开发高效的电化学反应器,用于在现场合成过氧化 (H2O2).
- 需要改进催化材料和通风策略,以提高H2O2的生产和利用.
- 处理复杂的工业废水的挑战,如垃圾填埋场的液缩物.
研究的目的:
- 合成和优化改性石墨 (GF) 催化层,用于侧向气化电化学H2O2反应堆.
- 调查碳黑 (CB) 和聚四乙烯 (PTFE) 修改对GF性能的影响.
- 评估系统在H2O2合成和垃圾填埋污水处理方面的效率.
主要方法:
- 湿超声波浸-化方法用于合成修改的GF阴极.
- 单因素方法来确定最佳的CB:PTFE质量比 (1:4).
- 在侧向通风电化学反应堆中实施并在最佳条件下测试 (pH 5,0.5 L/min空气流量,电流密度为9 mA/cm2).
主要成果:
- 在6个循环中达到560mg/L的最大H2O2积累,生产能力>95%.
- 侧面通风使阴极氧气度增加到20 mg/L (而底部通风为3.95 mg/L).
- 垃圾填埋场液的60分钟处理导致了完全的色去除和>60%的TOC降解.
结论:
- 经过修改的GF阴极和侧面通风策略显著增强了电化学H2O2合成.
- 该系统在H2O2生产和环境修复应用中表现出高效率和稳定性.
- 这种开创性的反应堆设计为可持续的H2O2产生和废水处理提供了有希望的解决方案.
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