用修改的血酸激活水净化:性能,降解途径和机制
Xiaohong Liu1, Zhangli Li1, Lei Jin1
1Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, College of Hydraulic & Environmental Engineering, College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, China.
Langmuir : the ACS journal of surfaces and colloids
|July 10, 2024
概括
改性黑马 (Hematite-(R)) 通过 peracetic acid (PAA) 有效地降解了头素 (CFZ). 这种基于天然矿物质的先进氧化工艺 (AOP) 显示出增强的污染物去除,提供可持续的净水解决方案.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 水处理技术水处理技术
背景情况:
- 基于天然矿物质的先进氧化过程 (AOP) 对于有效降解污染物至关重要.
- 黑马是一种常见的天然矿物质,因其在环境修复方面的潜力而受到探索.
- 甲酸 (PAA) 是一种强有力的氧化剂,用于各种AOP应用.
研究的目的:
- 使用降解剂 (NaBH4) 来修改天然黑马,以产生黑马-R).
- 为了研究血酸盐-R/PAA系统对头素 (CFZ) 降解的效率.
- 为了阐明降解机制,并确定涉及的活性氧物种.
主要方法:
- 黑马被用玻利化物 (NaBH4) 处理,以产生黑马-R).
- 在各种条件下,使用了Hematite-(R) /PAA系统来降解头素 (CFZ).
- 使用扫描实验和电子磁共振 (EPR) 来识别反应性物种 (1O2,CH3C(O) OOO•,OH).
主要成果:
- 与单纯的血酸盐相比,血酸盐-R/PAA系统提高了CFZ降解率21.7%.
- 血中表面Fe (II) 含量较高 (52%) 导致其催化活性.
- 该工艺在广泛的pH范围 (1.0-9.0) 中表现出高效率,并受到特定离子 (H2PO4-,CO32-) 和酸的影响.
结论:
- 改性血红 (Hematite-(R)) 有效地激活PAA,使其能够降解较高的塞法索林.
- 该研究确定了负责CFZ去除的关键反应性氧物种.
- 这项研究支持基于天然黑马的AOPs的应用,以有效净化水.
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