Related Experiment Video

Updated: May 6, 2026

Characterization of Aquatic Biofilms with Flow Cytometry
08:30

Characterization of Aquatic Biofilms with Flow Cytometry

Published on: June 6, 2018

9.1K

Adsorption characteristics of ciprofloxacin hydrochloride on polystyrene microplastics in freshwater

Xi Gao1, Silu Chang1, Fengxu Liu1

  • 1College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China.

Environmental Science and Pollution Research International
|March 4, 2024
PubMed

Insights

Aging polystyrene microplastics (MPs) enhances their adsorption of ciprofloxacin hydrochloride (CIP) antibiotics. Fenton aging proved most effective, with adsorption influenced by pH, ionic strength, and fulvic acid concentration.

Area of Science:

  • Environmental Science
  • Environmental Chemistry
  • Materials Science

Background:

  • Microplastics (MPs) are emerging environmental contaminants.
  • Antibiotic residues in aquatic environments pose risks.
  • Understanding MP-antibiotic interactions is crucial for risk assessment.

Purpose of the Study:

  • To elucidate the adsorption mechanism of antibiotics on microplastics.
  • To investigate the effect of aging on microplastic-antibiotic interactions.
  • To evaluate environmental factors influencing adsorption.

Main Methods:

  • Batch adsorption experiments using polystyrene (PS) microplastics.
  • Aging of PS MPs via Fenton and high-temperature methods.
  • Analysis of adsorption kinetics, isotherms, and environmental factors (pH, ionic strength, fulvic acid, co-existing ions).

Main Results:

  • CIP adsorption on PS is exothermic, following pseudo-second-order kinetics and Freundlich isotherms.
  • Aging significantly enhanced CIP adsorption capacity, with Fenton aging for 7 days being optimal.
  • Optimal adsorption occurred at pH 6; adsorption decreased with increasing ionic strength and fulvic acid concentration.

Conclusions:

  • Microplastic aging enhances antibiotic adsorption capacity.
  • Adsorption is primarily physical, with electrostatic interactions and hydrogen bonding playing secondary roles.
  • Co-existing Cu(II) ions inhibit CIP adsorption on microplastics.
Keywords:
Adsorption behaviorAgingCiprofloxacinMicroplasticsPolystyrene

More Related Videos

A Facile Synthetic Method to Obtain Bismuth Oxyiodide Microspheres Highly Functional for the Photocatalytic Processes of Water Depuration09:09

A Facile Synthetic Method to Obtain Bismuth Oxyiodide Microspheres Highly Functional for the Photocatalytic Processes of Water Depuration

Published on: March 29, 2019

7.7K
Forming Micro-and Nano-Plastics from Agricultural Plastic Films for Employment in Fundamental Research Studies08:21

Forming Micro-and Nano-Plastics from Agricultural Plastic Films for Employment in Fundamental Research Studies

Published on: July 27, 2022

4.2K

Related Concept Videos

Types of Step-Growth Polymers: Polyesters01:20

Types of Step-Growth Polymers: Polyesters

The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
1.7K
Ion Exchange01:17

Ion Exchange

Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
1.6K
Plasticizers01:31

Plasticizers

Water-reducers, or plasticizers, are chemical admixtures used in concrete to improve strength and workability. These additives reduce the water-cement ratio without compromising workability, lower the cement content while maintaining the same workability, or increase workability to assist concrete placement in inaccessible areas.
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...
498
Superplasticizers01:30

Superplasticizers

Superplasticizers are advanced admixtures that enhance the workability of concrete by lowering the water content without compromising the strength of the material. These substances are highly effective water reducers, improving concrete flow, making it easier to work with, and enabling concrete to reach inaccessible areas or densely reinforced sections without mechanical vibration. The key components in superplasticizers are either sulfonated melamine or naphthalene formaldehyde condensates,...
477
Bioplastics01:27

Bioplastics

Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
73
Microbial Bioremediation of Plastics01:28

Microbial Bioremediation of Plastics

Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
144