从空气中提取HO2-的高效电合成,用于下水道中的硫化物控制
Jiaqi Hou1, Yiming Li1, Haixiao Guo1
1School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China.
Journal of hazardous materials
|April 3, 2024
概括
本研究介绍了一种高效的电化学方法,用于在现场产生氧化离子 (HO2-),用于下水道中硫化物管理. 这种新的方法避免了有毒的副产品,并显示了高的生产率和稳定性,为废水处理提供了一个有希望的解决方案.
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:
- 传统的硫化物管理的电化学方法产生有毒的副产品,如化,和氨.
- 现有的方法因不良的失活能力和环境问题而扎.
研究的目的:
- 开发一种高效且环保的电化学方法,用于在现场产生氧化离子 (HO2-),用于硫化物减排.
- 优化HO2生成过程并评估其在处理含硫化物废水方面的有效性.
主要方法:
- 采用四个间隔的电化学电池来捕获氧气,用于HO2-生产,没有有毒的副产品.
- 采用PTFE/CB-GDE催化剂层来保持稳定的气液微环境用于电合成.
- 优化了操作参数,包括流通道,电解质类型,流量和循环类型.
主要成果:
- 通过参数优化,HO2-生成率从453.3 mg L-1 h-1 显著增加到575.4 mg L-1 h-1.
- 在稳定性测试中,已证明具有强大的运行能力,HO2-产生率超过15g L-1,电流效率 (CE) 超过85%.
- 在HO2处理后,观察到下水道死细胞和亡细胞生物膜细胞增加了11.1%,超过了NaOH和H2O2方法.
结论:
- 在现场的HO2-电合成为下水道中硫化物减排提供了一个有希望和实用的策略.
- 这种方法有效地处理含硫化物废水,具有高效率和稳定性.
- 开发的方法与现有的硫化物管理技术相比,是一个显著的进步.
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