来自受污染场所的多相提取废水的增强处理,使用Cu-Ce修饰的GAC三维电极
Yongsheng Chen1, Yi Xue1, Zhengqing Liu1
1State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, Jiangsu, PR China.
Journal of environmental management
|January 5, 2025
概括
使用铜改性颗粒活性炭的新型3D电极系统有效处理多相提取废水. 这种先进的系统显著提高了污染物清除效率,并减少了清洁地下水的能源消耗.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
背景情况:
- 三维 (3D) 电极系统被认为可以改善电催化过程.
- 多相提取的废水给环境带来了重大挑战.
- 颗粒活性炭 (GAC) 是一种常见的吸附剂,但可以增强其电催化潜力.
研究的目的:
- 开发和评估使用Cu-Ce修饰的GAC处理多相提取废水的3D电极系统.
- 为了优化Cu-Ce/GAC电极的制备条件.
- 与传统方法相比,评估开发系统的效率和能源消耗.
主要方法:
- 通过浸制备Cu-Ce修饰的GAC (Cu-Ce/GAC) 颗粒电极.
- 电极的结构和电化学特性.
- 研究浸泡度,烧焦温度和时间对电极性能的影响.
- 测试多相提取废水的处理方法,分析污染物去除和能源消耗.
主要成果:
- 尽管特定表面积略微减少,但Cu-Ce/GAC电极的活性面积比GAC大2.6倍.
- 最佳的制备条件被确定为15mmol/L浸度,500°C烧温度和2h烧时间.
- 在最佳条件下,92.39%的化学氧需求 (COD) 从地下水多提取物中被移除,能源消耗为13.44千瓦时/公斤COD.
- 与2D系统相比,3D Cu-Ce/GAC系统实现了降解效率提高62%,能源消耗降低60%.
- 关键的有机污染物如,,二甲和三甲在60分钟内以超过90%的速度被清除.
结论:
- 开发的3D Cu-Ce/GAC电极系统为处理多相提取废水提供了一种高度有效的方法.
- 优化的制备方法显著提高了电催化性能,并降低了能源需求.
- 这种方法为污染地下水的修复提供了一个有希望的方法和工程解决方案.
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