在性溶液中由远紫外线驱动的Cr (VI) 减少:化物和硫酸盐的协同作用
Yida Huang1, Min Zhao1, Guoxin Li2
1School of Environmental Science & Engineering, Xiamen University of Technology, Xiamen 361024, China.
Journal of environmental sciences (China)
|November 2, 2025
概括
六价 (Cr(VI)) 在性条件下可以通过硫酸盐还原有效地去除. 远紫外线 (UV222) 辐射显著增强了这一过程,特别是化物,提供了一个高效和环保的整治策略.
科学领域:
- 环境化学环境化学
- 水处理技术水处理技术
- 光催化作用的光催化
背景情况:
- 六价 (Cr(VI)) 在水系统中构成严重的环境威胁.
- 传统的Cr6消毒通常依赖于酸性介质中的化学降解,导致试剂废弃物.
- 开发高效和可持续的Cr (VI) 整治方法至关重要.
研究的目的:
- 在性条件下 (pH 7-10),通过硫酸盐对Cr(VI) 减少的动力学和机制进行研究.
- 评估远紫外线 (UV222) 辐射和化物对Cr (VI) 减少的协同效应.
- 为了比较UV222增强过程与传统的UV254方法.
主要方法:
- 在不同pH值下通过硫酸盐减少Cr(VI) 的动力学研究.
- 研究远紫外线 (UV222) 辐射对反应速率的影响.
- 评估的催化作用和其他离子和溶解氧的抑制作用.
- 来自反应动力学和影响因素的机械见解.
主要成果:
- 在性介质中,Cr (VI) 通过硫酸盐减少,然后是伪零级动力学.
- 远紫外线 (UV222) 辐射显著加快了减少的速度.
- 化物显著增强了反应,减少了能量投入和硫酸盐消耗.
- 酸盐,酸盐,溶解氧气和Cu (II) 抑制了还原,表明了水合电子的重要性.
结论:
- 紫外线222/硫酸盐/化物系统在减少Cr (VI) 方面表现出优异的性能,与基于紫外线254的工艺相比.
- 这种方法提供了一种高效且潜在的成本效益的方法,用于在各种环境中进行Cr (VI) 修复.
- 这些发现突显了远紫外线技术在可持续水处理方面的潜力.
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