通过铁-MOF的光-芬顿工艺消除Microcystis aeruginosa和二次污染物
Hong- Yu Chu1, Zheng-Xing Liu1, Jian-Feng Wang2
1Research center of Environmental Functional Materials, Institute of Advanced Materials, Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Key Laboratory of Urban Stormwater System and Water Environment (Ministry of Education), Beijing University of Civil Engineering and Architecture, Beijing 100044, PR China.
Water research
|November 28, 2025
概括
一种基于铁的新型金属有机框架 (MIL-88A(Fe)) 有效地消除了由Microcystis aeruginosa引起的有害藻类繁殖. 这种可持续的光-芬顿系统还能降解毒素,保护生态系统和人类健康.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 生物技术是生物技术.
背景情况:
- 来自Microcystis aeruginosa (M. aeruginosa) 的有害藻类繁殖 (HAB) 对水生生态系统和人类健康构成全球威胁.
- 现有的整治策略往往缺乏效率和可持续性.
- 降解释放的藻类有机物 (AOM) 和微素-LR (MC-LR) 等毒素,对于减轻二次污染至关重要.
研究的目的:
- 开发一种异质的光-芬顿系统,同时使M. aeruginosa无活化和AOM降解.
- 为了研究基于铁的金属有机框架 (MIL-88A(Fe)) 在光-芬顿工艺中的有效性.
- 评估拟议的整治战略的可扩展性和现实应用性.
主要方法:
- 在低功率LED灯下使用MIL-88A (Fe) 作为催化剂的异质光-芬顿系统.
- 对藻类细胞损伤的分析,包括细胞外聚合物 (EPS),细胞膜,光合作用色素和抗氧化系统.
- 检测和定量活性氧物种 (ROS) 和AOM的降解,包括MC-LR.
- 在模拟太阳光下使用固定MIL-88A (Fe) 的试点规模测试.
主要成果:
- 在180分钟内实现了几乎完全的M. aeruginosa清除 (>99.9%).
- 观察到藻类细胞及其组成部分的不可逆转损伤.
- 生成的ROS (HO•和O2•−) 有效降解了AOM和MC-LR.
- 试点规模的试验表明效率与实验室规模的测试相当,验证了现实世界的适用性.
结论:
- MIL-88A (Fe) 提出了一个可扩展和高效的MOF支持的HAB修复的光-芬顿策略.
- 该系统同时使藻类失活,并降解有毒副产品,减少二次污染.
- 这种方法为受HAB影响的淡水生态系统的可持续管理提供了有希望的解决方案.
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