We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Adsorption characteristics of ciprofloxacin hydrochloride on polystyrene microplastics in freshwater.
- Authors
Gao, Xi; Chang, Silu; Liu, Fengxu; Wei, Jiayu; Yan, Bo
- Abstract
In order to reveal the adsorption mechanism of microplastics (MPs) on antibiotics, polystyrene (PS) was chosen as a typical microplastic, Fenton and high-temperature aging methods were used to obtain aged MPs particles. The adsorption behavior and mechanism of ciprofloxacin hydrochloride (CIP) on PS before and after aging were studied by batch adsorption experiments, and other influencing environmental conditions were evaluated concurrently. The results showed that the adsorption of CIP on PS was an exothermic reaction, the pseudo-second-order model and Freundlich isothermal models could fit the adsorption of CIP on PS. Aging treatment enhanced the adsorption capacity of PS to CIP, and Fenton aging for 7 days had the best effect. The highest adsorption was observed when the solution pH was 6. The adsorption capacity of microplastics gradually decreased with increasing ionic strength and the concentration of fulvic acid, while the aging microplastics changed little with the concentration of fulvic acid. The presence of both Cu (II) and CIP inhibits the adsorption of each other on microplastics. Based on the above findings, the adsorption of CIP on PS is dominated by physical adsorption, and electrostatic interactions and hydrogen bonding interactions are also important mechanisms for the adsorption of CIP on microplastics.
- Subjects
PLASTIC marine debris; CIPROFLOXACIN; MICROPLASTICS; BIODEGRADABLE plastics; PHYSISORPTION; HYDROGEN bonding interactions; ADSORPTION (Chemistry); POLYSTYRENE
- Publication
Environmental Science & Pollution Research, 2024, Vol 31, Issue 16, p24139
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-024-32750-y