Adsorption behavior of the antibiotic levofloxacin on microplastics in the presence of different heavy metals in an aqueous solution

Chemosphere
Fei YuJie Ma

Abstract

In recent years, the composite pollution of microplastics with organic pollutants and heavy metal ions in the water environment, including their combined toxicity, has received increasing attention. However, the mechanism underlying the joint effect of antibiotics and heavy metals on the surface behavior of microplastics has not been reported. The primary purpose of this article was to analyze the adsorption of levofloxacin (OFL) onto polyvinyl chloride (PVC) in an aqueous solution. The adsorption behavior was studied using kinetics, thermodynamics, and isotherm models, and the effects of several environmental factors, such as ionic strength, fulvic acid, and heavy metals, were determined. The adsorption kinetics and isotherms models indicated that the whole adsorption process was controlled by both intraparticle and outer diffusion, as well as chemical adsorption, which was the dominant mechanism. Based on the results of the thermodynamic experiment, the adsorption process was a nonspontaneous and exothermic reaction process. Furthermore, the presence of Cu2+, Zn2+, and Cr3+ ions significantly promoted the adsorption of OFL, but the presence of Cd2+ and Pb2+ ions inhibited its adsorption. At the same time, the presence of the ...Continue Reading

Citations

Sep 29, 2020·Frontiers in Plant Science·Ying ZhouDangquan Zhang
Dec 15, 2020·The Science of the Total Environment·Fernando G TorresGabriel E De-la-Torre
Apr 19, 2021·Ecotoxicology and Environmental Safety·Lina FuWei Dai
May 3, 2021·Environmental Research·Srinidhi SridharanSiming You
May 20, 2021·Journal of Hazardous Materials·Katarzyna JędruchniewiczPatryk Oleszczuk
Jun 19, 2021·The Science of the Total Environment·Jing DingLingxin Chen
Jul 31, 2021·The Science of the Total Environment·Larissa Zacher LaraAndreia Neves Fernandes
Aug 26, 2021·Environmental Science and Pollution Research International·Shanxue JiangZhiliang Yao
Oct 10, 2021·FEMS Microbiology Ecology·Magdalena NiegowskaTeresa Lettieri

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