在废染料污泥中,温度诱导的原子内在位点在废染料污泥中演变为富含铁的催化剂,以实现可持续的污染清除
Shengkun Zhang1, Xunheng Jiang1, Yue Chen1
1College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
Journal of hazardous materials
|May 9, 2025
概括
这项研究将有毒的染料污泥转化为一种基于铁的催化剂,用于像芬顿一样高效地降解废水污染物. 这种废物致富战略为工业废水处理提供了一个可持续的解决方案.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
背景情况:
- 染色污泥由于有毒有机物质和金属而构成重大废物挑战.
- 现有的废物致富策略对污泥的利用是有限的.
- 从工业废物中开发高效的催化剂对于可持续实践至关重要.
研究的目的:
- 开发一种温度重建策略,将染色污泥转化为铁基催化剂.
- 研究衍生催化剂在废水污染物的芬顿式降解过程中的催化性能.
- 探索污泥利用的潜力,以实现可持续的废水处理.
主要方法:
- 采用温度重建策略,从染色泥中合成一种基于铁的催化剂.
- 使用了先进的特征技术,包括X射线衍射,X射线光电子光谱和同步X射线吸收光谱.
- 与芬顿类似的催化降解实验使用过氧硫酸盐进行,以降解ppm级污染物.
主要成果:
- 该战略成功地将污泥转化为具有优化铁位点 (FeS和Fe0) 的铁基催化剂 (BC-800).
- BC-800在分解过氧硫酸盐方面表现出高效率,在30分钟内实现了近100%的降解和超过60%的芳香化合物的矿化.
- 催化剂在广泛的pH范围内以及在共存离子的存在下表现出极好的稳定性和活性.
结论:
- 开发的温度重建策略有效地将染料污泥转化为高性能芬顿式催化剂.
- 这种方法为可持续的废水处理提供了可行的"通过废物控制废物"解决方案.
- 该研究强调了工业污泥利用对环境修复的潜力.
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