Clay minerals-mediated removal of Norfloxacin and Norfloxin-resistant bacteria from water environments and associated mechanisms

IF 5.8 3区 环境科学与生态学 0 ENVIRONMENTAL SCIENCES
Ningyu Sun, Huimin Wang, Xinbo Zhang, Zeyou Chen, Anping Peng
{"title":"Clay minerals-mediated removal of Norfloxacin and Norfloxin-resistant bacteria from water environments and associated mechanisms","authors":"Ningyu Sun,&nbsp;Huimin Wang,&nbsp;Xinbo Zhang,&nbsp;Zeyou Chen,&nbsp;Anping Peng","doi":"10.1007/s11356-024-35719-z","DOIUrl":null,"url":null,"abstract":"<div><p>Norfloxacin (NOR) is frequently detected in various water bodies and has the potential to promote the proliferation of NOR-resistant bacteria/genes in the environment. Efficiently removing residual NOR and NOR-resistant bacteria from contaminated water is critical to mitigating their environmental risks. This study investigated the ability of two common clay minerals, kaolinite and montmorillonite, to remove NOR and NOR-resistant bacteria from five different water environments (ultrapure water, simulated and real freshwater, and simulated and real seawater) and explored the underlying removal mechanisms. The results showed that both clays adsorbed NOR according to a pseudo-first-order kinetic model. In simulated and actual freshwater and seawater, the adsorption of NOR by kaolinite was 0.199, 0.120, 0.094, and 0.010 mg g<sup>−1</sup>, while montmorillonite adsorbed NOR at significantly higher levels, with values of 2.880, 2.208, 0.433, and 0.067 mg g<sup>−1</sup>, respectively. The primary mechanisms of adsorption included electrostatic interactions, cation exchange, and cation bonding and bridging. In addition to NOR sorption, culture tests revealed that montmorillonite exhibited significant antibacterial activity against NOR-resistant bacteria, achieving an inhibition ratio of 83.84 ± 4.01% when the initial concentrations of bacteria and montmorillonite were 1.68 ± 1.00 × 10<sup>5</sup> CFU·mL<sup>−1</sup> and 40 mg mL<sup>−1</sup>, respectively. Remarkably, montmorillonite maintained its high sorption capacity and antibacterial activity even after multiple reuse cycles. These findings highlight the promising application potential of montmorillonite, particularly in terms of its storage and long-distance distribution capabilities, making it an effective material for removing both NOR and NOR-resistant bacteria from the environment. However, it is important to note that under estuarine conditions, clay-bound NOR could be released if water quality changes. Therefore, we conclude that strategies to degrade and remove antibiotics adsorbed onto clay minerals should be developed to prevent the release of antibiotics when clay particles enter the ocean, thus avoiding further environmental contamination.</p></div>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":"31 59","pages":"67024 - 67034"},"PeriodicalIF":5.8000,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Science and Pollution Research","FirstCategoryId":"93","ListUrlMain":"https://link.springer.com/article/10.1007/s11356-024-35719-z","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"0","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0

Abstract

Norfloxacin (NOR) is frequently detected in various water bodies and has the potential to promote the proliferation of NOR-resistant bacteria/genes in the environment. Efficiently removing residual NOR and NOR-resistant bacteria from contaminated water is critical to mitigating their environmental risks. This study investigated the ability of two common clay minerals, kaolinite and montmorillonite, to remove NOR and NOR-resistant bacteria from five different water environments (ultrapure water, simulated and real freshwater, and simulated and real seawater) and explored the underlying removal mechanisms. The results showed that both clays adsorbed NOR according to a pseudo-first-order kinetic model. In simulated and actual freshwater and seawater, the adsorption of NOR by kaolinite was 0.199, 0.120, 0.094, and 0.010 mg g−1, while montmorillonite adsorbed NOR at significantly higher levels, with values of 2.880, 2.208, 0.433, and 0.067 mg g−1, respectively. The primary mechanisms of adsorption included electrostatic interactions, cation exchange, and cation bonding and bridging. In addition to NOR sorption, culture tests revealed that montmorillonite exhibited significant antibacterial activity against NOR-resistant bacteria, achieving an inhibition ratio of 83.84 ± 4.01% when the initial concentrations of bacteria and montmorillonite were 1.68 ± 1.00 × 105 CFU·mL−1 and 40 mg mL−1, respectively. Remarkably, montmorillonite maintained its high sorption capacity and antibacterial activity even after multiple reuse cycles. These findings highlight the promising application potential of montmorillonite, particularly in terms of its storage and long-distance distribution capabilities, making it an effective material for removing both NOR and NOR-resistant bacteria from the environment. However, it is important to note that under estuarine conditions, clay-bound NOR could be released if water quality changes. Therefore, we conclude that strategies to degrade and remove antibiotics adsorbed onto clay minerals should be developed to prevent the release of antibiotics when clay particles enter the ocean, thus avoiding further environmental contamination.

粘土矿物介导的诺氟沙星和耐诺氟沙星细菌从水环境中的去除及其相关机制。
诺氟沙星(NOR)在各种水体中经常被检测到,并有可能促进环境中耐诺氟沙星细菌/基因的增殖。有效去除污染水中残留的硝态氮和耐硝态氮细菌对于减轻其环境风险至关重要。本研究考察了两种常见粘土矿物高岭石和蒙脱土在5种不同水环境(超纯水、模拟和真实淡水、模拟和真实海水)中去除NOR和耐NOR细菌的能力,并探讨了潜在的去除机制。结果表明,两种黏土对硝态氮的吸附均符合准一级动力学模型。在模拟和实际淡水和海水中,高岭土对NOR的吸附量分别为0.199、0.120、0.094和0.010 mg g-1,而蒙脱土对NOR的吸附量则显著高于前者,分别为2.880、2.208、0.433和0.067 mg g-1。吸附的主要机制包括静电相互作用、阳离子交换、阳离子键和桥接。培养试验表明,蒙脱土对耐硝细菌具有显著的抑菌活性,当细菌和蒙脱土的初始浓度分别为1.68±1.00 × 105 CFU·mL-1和40 mg mL-1时,其抑菌率为83.84±4.01%。值得注意的是,蒙脱土在多次重复使用后仍保持了较高的吸附能力和抗菌活性。这些发现突出了蒙脱土的应用潜力,特别是其储存和远距离分布能力,使其成为去除环境中NOR和NOR耐药细菌的有效材料。然而,值得注意的是,在河口条件下,如果水质发生变化,粘土结合的NOR可能被释放。因此,我们认为应该开发降解和去除黏土矿物上吸附的抗生素的策略,以防止黏土矿物颗粒进入海洋时释放抗生素,从而避免进一步的环境污染。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
CiteScore
8.70
自引率
17.20%
发文量
6549
审稿时长
3.8 months
期刊介绍: Environmental Science and Pollution Research (ESPR) serves the international community in all areas of Environmental Science and related subjects with emphasis on chemical compounds. This includes: - Terrestrial Biology and Ecology - Aquatic Biology and Ecology - Atmospheric Chemistry - Environmental Microbiology/Biobased Energy Sources - Phytoremediation and Ecosystem Restoration - Environmental Analyses and Monitoring - Assessment of Risks and Interactions of Pollutants in the Environment - Conservation Biology and Sustainable Agriculture - Impact of Chemicals/Pollutants on Human and Animal Health It reports from a broad interdisciplinary outlook.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信