弱磁场和共存的离子通过ZVI/H2O2系统加速了的去除:它们的效率和机制
Liping Liang1, Chaoqi Bai2, Yuting Zhang2
1School of Environmental Science and Engineering, Changzhou University, Changzhou, 213164, China; School of Life and Environmental Science, Shaoxing University, Shaoxing, 312000, China.
Chemosphere
|May 12, 2024
概括
这项研究表明,弱磁场 (WMF) 显著增强了使用零价值铁 (ZVI) 和过氧化 (H2O2) 的废水中的降解. 该WMF加速了这个过程,提供了一种有效的方法来去除.
科学领域:
- 环境化学环境化学
- 水处理技术水处理技术
- 先进的氧化过程 先进的氧化过程
背景情况:
- 是由于人类活动和工业生产而造成的重大环境风险.
- 废水中的的有效处理对于环境保护至关重要.
- 现有的方法需要优化,以提高效率和成本效益.
研究的目的:
- 为了研究弱磁场 (WMF) 和零价值铁 (ZVI) 与过氧化 (H2O2) 对降解的协同效应.
- 为了优化反应条件,以提高的去除.
- 为了阐明降解机制和识别中间产品.
主要方法:
- 使用由WMF激活的ZVI/H2O2系统来降解水溶液中的.
- 多种参数包括初始pH值,醇度,ZVI剂量,H2O2剂量和各种离子的存在.
- 使用气体染色学-质谱学 (GC-MS) 识别的降解产品和中间体.
主要成果:
- 通过ZVI/H2O2系统,WMF显著提高了去除率 (增加了1.05-2.66倍).
- 在pH 5.0,0.2 g L-1 ZVI,6 mM H2O2下,在25°C下180分钟内达到完全去除的最佳条件 (100mg L-1).
- 一些离子 (Ca2+,Mg2+,Cl−,SO42−) 增强了反应动力学 (2.22-10.40倍),而其他离子 (NO3−,CO32−,PO43−) 则抑制了反应动力学. 基被确定为主要的活性物种.
结论:
- 该WMF加速ZVI腐蚀,增加Fe2+释放和随后的基生成,以增强降解.
- 采用ZVI/H2O2/WMF工艺,特别是与有益离子相结合时,为废水处理提供了一种新且潜在的成本效益高的方法.
- 了解降解途径和WMF和离子的作用为优化工业废水处理提供了基础.
关键词:
同时存在的离子.类醇 (Phenol Phenol) 是一种有机物.弱磁场 (WMF) 是指微弱的磁场.ZVI/H{2}O{2}O{2}ZVI/H{2}O{2}O{2}O{3}O{4}O{2}O{2}O{2}O{3}O{4}O{4}O{4}O{5}O{6}O{6}O{7}O{8}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O{9}O}O{9}O{9}O{9}O{O}O{O}O}O{O}O{O}O}O{O}O}O{O}O}O相关概念视频
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