Skip to main content
Log in

Behavior and mechanisms of ciprofloxacin adsorption on aged polylactic acid and polyethlene microplastics

  • Research Article
  • Published:
Environmental Science and Pollution Research Aims and scope Submit manuscript

Abstract

Microplastics (MPs) and antibiotics are emerging pollutants in aquatic environments. MPs can absorb antibiotics, resulting in compound pollution. Batch adsorption experiments were used to investigate the adsorption behavior of CIP on polylactic (PLA) and polyethlene (PE) under various environmental conditions. After a lengthy aging process, both MPs underwent significant physicochemical changes. The equilibrium adsorption capacities of aged PLA and PE were 0.382 mg/g and 0.28 mg/g, respectively, which increased by 18.06% and 75% compared to pristine PLA and PE. The sorption capacity of MPs increased when the pH of the solution approached the dissociation constant (6.09, 8.74) of CIP. When the salinity of the solution was 3.5%, the adsorption capacity of MPs was reduced by more than 65%. The adsorption capacity of MPs rapidly decreased when 20 mg/L fulvic acid was added. Because norfloxacin (NOR) competes for adsorption sites on the microplastic, CIP adsorption is inhibited. Based on the adsorption models, FTIR, and XPS spectra, we demonstrated that the process was monolayer adsorption, with chemical and physical mechanisms including hydrogen bonding, π-π conjugation, ion exchange, and electrostatic interactions controlling it. Thus, PLA and PE microplastics may be a potential vector for CIP in water, and their interaction is mainly influenced by the physicochemical properties of the MPs and environmental factors.

Graphical abstract

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8

Similar content being viewed by others

Data availability

The data that supports the findings of this study are available within the article and its supplementary material.

References

Download references

Funding

This study was financially supported by the National Natural Science Foundation of China Projects (U21A2003) and The Guangdong Science and Technology program (No. 2020B121201003).

Author information

Authors and Affiliations

Authors

Contributions

Jinni Liang: conceptualization, methodology, software, data curation, writing – original draft preparation. Jiahui Wu: visualization, investigation. Zhi Zeng: validation. Manzhi Li: validation. Weizhen Liu: investigation, visualization. Taiping Zhang: writing – reviewing and editing.

Corresponding author

Correspondence to Taiping Zhang.

Ethics declarations

Ethical approval

This study did not involve any human or animal experiments.

Consent to participate

Not applicable.

Consent for publication

Not applicable.

Conflict of interest

We declare that we have no financial and personal relationships with other people or organizations that can inappropriately influence our work, and there is no professional or other personal interest of any nature or kind in any product, service, or company that could be construed as influencing the position presented in, or the review of, the manuscript entitled.

Additional information

Responsible Editor: Tito Roberto Cadaval Jr

Publisher's note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary file1 (DOCX 440 KB)

Rights and permissions

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Liang, J., Wu, J., Zeng, Z. et al. Behavior and mechanisms of ciprofloxacin adsorption on aged polylactic acid and polyethlene microplastics. Environ Sci Pollut Res 30, 62938–62950 (2023). https://doi.org/10.1007/s11356-023-26390-x

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11356-023-26390-x

Keywords

Navigation