Adsorption characteristics of tetracycline onto particulate polyethylene in dilute aqueous solutions.

Autor: Nguyen TB; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, 81157, Taiwan., Ho TB; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, 81157, Taiwan., Huang CP; Department of Civil and Environmental Engineering, University of Delaware, Newark, 19716, DE, USA., Chen CW; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, 81157, Taiwan., Hsieh SL; Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung City, 81157, Taiwan., Tsai WP; Department of Fisheries Production and Management, National Kaohsiung University of Science and Technology, Kaohsiung City, 81157, Taiwan., Dong CD; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, 81157, Taiwan. Electronic address: cddong@nkust.edu.tw.
Jazyk: angličtina
Zdroj: Environmental pollution (Barking, Essex : 1987) [Environ Pollut] 2021 Sep 15; Vol. 285, pp. 117398. Date of Electronic Publication: 2021 May 21.
DOI: 10.1016/j.envpol.2021.117398
Abstrakt: The presence of ultrafine plastics particles and its potential to concentrate and transport organic contaminants in aquatic environments have become a major concern in recent years. Specifically, the uptake of hazardous chemicals by plastics particles may affect the distribution and bioavailability of the chemicals. In this study, the adsorption of tetracycline (TC), an antibiotic frequently found in aquatic environments, on high-density polyethylene (PE) particles with the average size of 45 μm, was investigated. The PE particles were characterized for surface acidity for the first time. Results showed that pH controls the surface charge of PE particles. TC adsorption onto PE particles was rapid as expected following the pseudo-second-order rate law (r 2  > 0.99). Polar forces in addition to specific chemical interactions, such as hydrogen bonding and hydrophophilicity controlled TC adsorption onto PE particles. Parameters, including pH, dissolved organic matter, ionic strength, major cations and anions affected TC adsorption onto PE micro-particles. Results indicated that PE particles can function as a carrier of antibiotics in the aquatic environment, which potentially imposes ecosystem and human health risks.
(Copyright © 2021 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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