PI/H2O2均相系统对耐药菌的绿色高效消毒

IF 12.4 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Water Research Pub Date : 2025-03-08 DOI:10.1016/j.watres.2025.123468

Boaiqi Zhang , Zhengmao Li , Fuyang Liu , Xiangwei Zhang , Yanghui Hou , Meiping Tong

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引用次数: 0

摘要

耐药菌（ARB）的繁殖和传播严重威胁着人类健康和生态系统。高碘酸盐（PI）为基础的高级氧化工艺具有纯化水的潜力，但受复杂活化剂或活化工艺的限制。在这里，我们证明H2O2可以用来激活PI，实现有效的ARB消毒性能。特别是，我们发现PI/H2O2系统（两种氧化剂均为0.1 mM）可在35 min内灭活ARB（大肠杆菌）。消毒系统中产生的HO·自由基攻击细胞内防御系统，导致ARB灭活。随着细胞膜裂解释放的抗生素耐药基因（ARGs）可被HO·自由基进一步降解。此外，我们发现PI/H2O2体系在广泛的离子强度范围内，在普通离子和腐植酸共存的情况下，以及在四种典型的实际水体中，都能有效地灭活ARB。PI/H2O2系统还可以有效地消毒其他类型的细菌和降解典型的有机污染物。此外，在日光照射下，可以大大提高PI/H2O2体系的ARB失活性能。本研究为ARB/ args污染水体的净化提供了一条实用有效的途径。

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Green and efficient disinfection of antibiotic-resistant bacteria via PI/H2O2 homogeneous system

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Green and efficient disinfection of antibiotic-resistant bacteria via PI/H2O2 homogeneous system

The proliferation and spread of antibiotic-resistant bacteria (ARB) significantly threaten human health and ecosystem. Periodate (PI) based advanced oxidation process has potentials for water purification but is limited by complex activators or activation process. Herein, we demonstrated that H₂O₂ could be used to activate PI, achieving efficient ARB disinfection performance. Particularly, we found that the PI/H₂O₂ system (0.1 mM for both oxidants) could inactivate ARB (Escherichia coli) within 35 min. The intracellular defense system could be attacked by HO^· radicals generated in the disinfection system, resulting in the inactivation of ARB. Antibiotic resistance genes (ARGs) released with the lysis of cell membrane could be further degraded by HO^· radicals. Moreover, we found that the PI/H₂O₂ system was effective to inactivate ARB in a broad range of ionic strengths, with coexisting common ions and humic acid, as well as in four typical actual water bodies. The PI/H₂O₂ system could also efficiently disinfect other types of bacteria and degrade typical organic contaminants. In addition, under sunlight irradiation, the ARB inactivation performance of the PI/H₂O₂ system could be greatly improved. This study provided a practical and efficient way for decontaminating ARB/ARGs-polluted water.

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来源期刊

Water Research 环境科学-工程：环境

CiteScore

20.80

自引率

9.40%

发文量

1307

审稿时长

38 days

期刊介绍： Water Research, along with its open access companion journal Water Research X, serves as a platform for publishing original research papers covering various aspects of the science and technology related to the anthropogenic water cycle, water quality, and its management worldwide. The audience targeted by the journal comprises biologists, chemical engineers, chemists, civil engineers, environmental engineers, limnologists, and microbiologists. The scope of the journal include: •Treatment processes for water and wastewaters (municipal, agricultural, industrial, and on-site treatment), including resource recovery and residuals management; •Urban hydrology including sewer systems, stormwater management, and green infrastructure; •Drinking water treatment and distribution; •Potable and non-potable water reuse; •Sanitation, public health, and risk assessment; •Anaerobic digestion, solid and hazardous waste management, including source characterization and the effects and control of leachates and gaseous emissions; •Contaminants (chemical, microbial, anthropogenic particles such as nanoparticles or microplastics) and related water quality sensing, monitoring, fate, and assessment; •Anthropogenic impacts on inland, tidal, coastal and urban waters, focusing on surface and ground waters, and point and non-point sources of pollution; •Environmental restoration, linked to surface water, groundwater and groundwater remediation; •Analysis of the interfaces between sediments and water, and between water and atmosphere, focusing specifically on anthropogenic impacts; •Mathematical modelling, systems analysis, machine learning, and beneficial use of big data related to the anthropogenic water cycle; •Socio-economic, policy, and regulations studies.