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不同阳极材料对电-芬顿工艺和使用顺序电-芬顿和电凝固的制厂废水处理的影响
1Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
Chemosphere
|June 25, 2023
概括
/SnO2-Sb/PbO2阳极在通过电-芬顿 (EF) 工艺处理皮制厂废水 (TWW) 方面表现出高效率. 连续的EF和电凝 (EC) 处理有效地去除了污染物,提供了增强的COD去除与相似的能源消耗.
科学领域:
- 环境科学 环境科学
- 电化学 电化学 电化学
- 水处理 处理水的方法
背景情况:
- 皮革厂废水 (TWW) 由于其复杂的污染物概况,造成了重大环境挑战.
- 电化学方法,包括电-芬顿 (EF) 和电凝 (EC),对TWW处理具有前景.
- 优化阳极材料和处理序列对于高效的TWW修复至关重要.
研究的目的:
- 评估各种阳极材料对使用EF的TWW电化学处理的影响.
- 研究连续EF和EC工艺的有效性,以进行全面的TWW清洁.
- 评估化物和硫酸盐在TWW电化学处理中的作用.
主要方法:
- 阳极材料 (Pt,Ti/RuO2-IrO2,Ti/SnO2-Sb,Ti/PbO2,Ti/SnO2-Sb/PbO2) 被测试用于TWW的EF处理.
- 使用Al电极进行EC的连续EF (1.5小时) 和EC (1小时) 处理.
- 使用离子染色学 (IC) 监测污染物去除 (COD,度,TSS,硫化物,Cr) 和离子度 (化物,硫酸盐).
主要成果:
- 在EF处理中,Ti/SnO2-Sb/PbO2阳极表现出高的电催化活性,稳定性和可重复性.
- 顺序EF和EC实现了高的去除率: (81.2 ± 3.9)%的COD,>98%的Cr,>99%的度,TSS和硫化物.
- 与独立的EF相比,联合处理提高了22.5%的COD去除,电能消耗相当.
结论:
- Ti/SnO2-Sb/PbO2阳极是用于TWW的EF处理的高效材料.
- 连续的EF和EC流程为全面的TWW整治提供了强大而有效的策略.
- 结合电化学方法提供了优越的污染物清除效率,特别是COD,具有能源效率.
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