通过改性铜尾矿和PMS系统有效降解碳二:性能评估和机制
Cong Pan1, Yan Sun2, Yiqie Dong3
1School of Resource and Environmental Sciences, Wuhan University, 430072, China.
Journal of hazardous materials
|December 12, 2023
概括
铜尾矿废弃物残留物 (CSWR) 用于使用过氧硫酸盐 (PMS) 在水中制造降解碳胺 (CBZ) 的催化剂. 这种可持续的方法有效地去除了99.99%以上的CBZ,提供了一个新的废物利用策略.
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:
- 碳氨酸 (CBZ) 是废水中的持续性制药污染物.
- 对CBZ的传统治疗方法往往是低效的或昂贵的.
- 从废物中开发可持续的催化剂对于环境修复至关重要.
研究的目的:
- 从铜尾矿废弃物残留物 (CSWR) 制备一种新的催化剂,用于CBZ降解.
- 构建和评估一个高效的CSWR/氧硫酸盐 (PMS) 催化系统.
- 探索固体废物的高价值利用环境应用.
主要方法:
- 铜尾矿废物经过性浸出和化处理,形成CSWR.
- 在CSWR/PMS系统中测试了CBZ在水溶液中的催化降解.
- 进行了材料表征 (形态,结构) 和DFT计算.
主要成果:
- 该CSWR催化剂呈现出一个多孔的,无形的结构,暴露了活性位点.
- 在20分钟内,CSWR/PMS系统实现了近99.99%的CBZ清除.
- 形成矿类铁化合物,增强HO•和SO4•-的产生.
- DFT的计算证实了CSWR对PMS的强烈吸附和电子转移.
结论:
- 通过PMS过程,CSWR是一种有效的,低成本的CBZ降解催化剂.
- 这项研究表明,在废水处理中利用固体废物是一种可行的方法.
- 该CSWR/PMS系统显示出在环境修复方面实际应用的巨大潜力.
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