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城市废水通过FeCl₃激活生物炭/氧单硫酸盐系统进行消毒:大肠杆菌失活和微塑料干扰

Mister Adeel¹, Claudia Cirillo², Maria Sarno²

¹Water Science and Technology (WaSTe) Group, Department of Civil Engineering, University of Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, SA, Italy.

Environmental pollution (Barking, Essex : 1987)

|July 25, 2024

概括

铁活性生物炭与过氧化硫酸盐结合,有效消毒城市废水,但微塑料通过阻断活性场所而降低效率. 这项研究阐明了在先进的氧化过程中微塑料干扰机制.

科学领域:

环境科学环境科学
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:

城市废水消毒对公共卫生和环境保护至关重要.
由生物炭激活的氧硫酸盐 (PMS) 显示出产生硫酸盐基来降解污染物的有望性.
微塑料对生物炭-PMS消毒系统的影响在很大程度上仍未被探索.

研究的目的:

调查FeCl3-激活生物炭 (Fe-BC) 与PMS相结合在城市废水中对大肠杆菌 (E. coli) 失活的疗效.
评估聚乙烯微塑料 (PE MPs) 对Fe-BC/PMS消毒过程的干扰.
阐明微塑料干扰背后的机制.

主要方法:

使用扫描电子显微镜 (SEM) 和能量分散光谱 (EDS) 进行Fe-BC的表征.
在不同的Fe-BC度和恒定的PMS剂量下评估大肠杆菌无活化效率.
在PEMP存在的情况下评估大肠杆菌的去除,并使用SEM分析处理后的Fe-BC.

主要成果:

在优化Fe-BC剂量 (0.5g/L) 的情况下,Fe-BC/PMS实现了显著的大肠杆菌无活化 (∼3.8日志单位).
存在PE MPs (200 mg/L) 对大肠杆菌去除效率产生了负面影响.
SEM分析表明,PE MPs吸附在Fe-BC表面上,可能会阻断PMS激活和根基清除的活性部位.

结论:

该Fe-BC/PMS系统证明了城市废水消毒的潜力,有助于废水符合农业再利用的要求.
微塑料通过吸附于生物炭来干扰Fe-BC/PMS过程,阻碍其催化活性.
了解微塑料干扰对于优化现实世界废水处理中的先进氧化过程至关重要.

关键词:

先进的氧化方式.用铁激活的生物炭.微塑料是一种微塑料.硫酸盐基的存在硫酸盐基的存在废水消毒废水消毒废水消毒

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