通过改造的碳纳米管调节激进和非激进通路,以有效氧化水中二元污染物的二元污染物
Jun Wang1, Hao Lv1, Xiandong Tong1
1State Key Laboratory of Separation Membranes and Membrane Processes, School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China.
Journal of hazardous materials
|August 19, 2023
概括
工程纳米材料有效降解混合污染物使用过氧硫酸盐 (PMS) 激活. 经过酸洗,装有铁的N-化碳纳米管 (Fe-NCNT-W) 在同时氧化各种有机污染物方面表现出卓越的性能.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 基于硫酸盐的先进氧化过程 (PS-AOP) 对污染物降解至关重要.
- 关于PS-AOPs降解单一与二元污染物的知识差距存在.
- 含铁的N-化碳纳米管 (Fe-NCNT) 被合成为过氧硫酸盐 (PMS) 激活剂.
研究的目的:
- 合成和描述Fe-NCNT及其酸洗变体 (Fe-NCNT-W) 作为PMS激活剂.
- 研究单一和二元有机污染物的同时降解 (AO7,,布洛芬,酸,酸,酸).
- 阐明降解机制,包括激进和非激进的途径.
主要方法:
- 合成和表征Fe-NCNT和Fe-NCNT-W. 这两种化合物.
- 使用PMS在单一和二进制系统中对污染物降解的实验研究.
- 机理学研究涉及激素清除和电子转移通路 (ETP) 分析.
- 用于模拟染色污水处理的膜反应器的制造.
主要成果:
- 与Fe2+/PMS,NCNT/PMS和Fe-NCNT/PMS系统相比,Fe-NCNT-W/PMS在降解二元污染物方面表现优越.
- 降解在各种pH条件下以及在背景物质存在的情况下是有效的.
- 铁-NCNT-W/PMS系统主要利用具有纳米封闭效应的非激素通路 (ETP和高价值铁氧物种).
- Fe-NCNT-W 膜反应器在处理实际染色污水方面表现有前途.
结论:
- 在降解混合有机污染物方面,Fe-NCNT-W是PMS的高效激活剂.
- 通过纳米限制增强的非激进通路是Fe-NCNT-W/PMS优越性能的关键.
- 这项研究为使用工程纳米材料来治疗PMS激活的联合污染提供了宝贵的见解.
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