Adsorption behavior of Cu(II) and Cr(VI) on aged microplastics in antibiotics-heavy metals coexisting system

Ziqing Zhou; Yiran Sun; Yayi Wang; Fei Yu; Jie Ma

doi:10.1016/j.chemosphere.2021.132794

Adsorption behavior of Cu(II) and Cr(VI) on aged microplastics in antibiotics-heavy metals coexisting system

Chemosphere. 2022 Mar;291(Pt 1):132794. doi: 10.1016/j.chemosphere.2021.132794. Epub 2021 Nov 4.

Authors

Ziqing Zhou¹, Yiran Sun², Yayi Wang³, Fei Yu⁴, Jie Ma⁵

Affiliations

¹ State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China; Research Center for Environmental Functional Materials, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, PR China. Electronic address: 2110110@tongji.edu.cn.
² State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China; Research Center for Environmental Functional Materials, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, PR China. Electronic address: 1531402@tongji.edu.cn.
³ State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China. Electronic address: yayi.wang@tongji.edu.cn.
⁴ College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, PR China. Electronic address: fyu@vip.163.com.
⁵ State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China; Research Center for Environmental Functional Materials, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China. Electronic address: jma@tongji.edu.cn.

PMID: 34742765
DOI: 10.1016/j.chemosphere.2021.132794

Abstract

Recently, the microplastics, as well as the compound pollution of heavy metals and antibiotics, in the aqueous environment have attracted increasing attention, but studies on the behavior of heavy metals on aged microplastics in antibiotics-heavy metals coexisting system are limited. Herein, to explore the impact of antibiotics on the adsorption of heavy metals by aged microplastics, the adsorption behavior of Cu(II) and Cr(VI) on aged polystyrene (PS) and polyvinyl chloride (PVC) were investigated. The results presented that ciprofloxacin (CIP) had negative and positive impacts on the adsorption of Cu(II) and Cr(VI) by aged microplastics, respectively. Moreover, the existence of CIP seemed to have no evident effect on the type of adsorption isotherm model and kinetic model in most adsorption systems of Cu(II). The negative impact of CIP on adsorption of Cu(II) may result from the competition adsorption and high steric hindrance effect, while non-specific interactions between neutral antibiotic-heavy metal complexes and the hydrophobic surface of aged microplastics as well as CIP as bridges influenced positively on adsorption of Cr(VI) on aged microplastics. This work was concerned with the interaction between binary pollutants and aging microplastics to clarify the risks of microplastics in the aqueous environment.

Keywords: Adsorption; Aged microplastic; Antibiotic; Binary pollution; Heavy metal.

MeSH terms

Adsorption
Anti-Bacterial Agents
Chromium
Metals, Heavy*
Microplastics
Plastics
Water Pollutants, Chemical* / analysis

Substances

Anti-Bacterial Agents
Metals, Heavy
Microplastics
Plastics
Water Pollutants, Chemical
Chromium
chromium hexavalent ion