用酸增强的Cu (II) /酸去除迪克洛菲纳克的过程:性能和机制
Jiewen Deng1, Jieli Ou1, Zhenran Wang1
1Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 611756, China.
Environmental research
|June 8, 2023
概括
酸盐缓冲剂显著提高了铜 (II) /氧硫酸盐 (PAA) 系统降解二二的效率. 该系统利用有机基来在中性条件下有效地去除污染物.
科学领域:
- 环境化学环境化学
- 催化剂是一种催化剂.
- 水处理 处理水的方法
背景情况:
- 有限的研究表明,铜 (II) 对过氧硫酸盐 (PAA) 激活具有较差的催化能力.
- 狄克洛菲纳克 (DCF) 是一种常见的药品污染物.
研究的目的:
- 为了研究Cu (II) /PAA系统在中性条件下降解二二的氧化性能.
- 探索酸盐缓冲溶液 (PBS) 在增强Cu (II) /PAA催化系统中的作用.
主要方法:
- 测试的Cu (II) /PAA系统有或没有PBS,用于在中性pH (7.4) 处进行DCF降解.
- 使用动力分析量化DCF去除率和确定的主导反应性氧物种.
- 在PBS的存在下,研究了Cu (II) 激活PAA的机制.
主要成果:
- 在PBS/Cu(II) /PAA系统中实现了压倒性的DCF去除,速度常数是没有PBS的6.53倍.
- 有机基,特别是CH3C(O) O•和CH3C(O) O•,被确定为DCF降解的主要代理物.
- 通过Cu (II) -PBS复合体 (CuHPO4),PBS促进了Cu (II) 减少为Cu (I) 并通过Cu (II) -PBS复合体 (CuHPO4) 调解PAA激活到一个激素生成途径.
结论:
- 使用酸盐优化的Cu (II) /PAA系统,显示出高效的二二烯去除效率.
- 酸盐通过促进激素形成,在增强Cu (II) /PAA催化活性方面发挥着至关重要的作用.
- 这项研究强调了将酸盐和铜结合在一起的潜力,以便在消除有机污染物方面有效地激活PAA.
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