Related Experiment Video
Updated: Aug 5, 2025
06:36
Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper
Published on: February 27, 2021
3.7K
Estrogen adsorption from an aqueous solution on the chitosan nanoparticles
Reza Davarnejad1, Kasra Sarvmeili1, Zahra Safari1
1Department of Chemical Engineering, Faculty of Engineering, Arak University, Arak 38156-8-8349, Iran.
International Journal of Biological Macromolecules
|March 29, 2023
Summary
Chitosan nanoparticles effectively remove ethinylestradiol from wastewater. Optimized conditions achieved 92.50% removal, demonstrating their potential as a sustainable adsorbent for estrogenic contaminants.
Area of Science:
- Environmental Science
- Materials Science
- Chemical Engineering
Background:
- Estrogenic compounds like ethinylestradiol pose risks to aquatic ecosystems.
- Wastewater treatment requires efficient and reusable adsorbents for estrogen removal.
Purpose of the Study:
- To investigate chitosan nanoparticles for ethinylestradiol removal from aqueous wastewater.
- To optimize adsorption conditions using response surface methodology.
Main Methods:
- Chitosan nanoparticles characterized by SEM, XRD, and FT-IR.
- Experimental design using Design Expert software (CCD under RSM) with four variables.
- Optimization of contact time, adsorbent dosage, pH, and initial concentration.
Main Results:
- Chitosan nanoparticles exhibited an adsorption capacity of 5.79 mg/g and surface area of 62 m²/g.
- Maximum estrogen removal of 92.50% achieved under optimal conditions.
- Langmuir isotherm and pseudo-second-order models accurately described the adsorption process.
Conclusions:
- Chitosan nanoparticles are efficient, reusable adsorbents for ethinylestradiol removal.
- Optimized parameters include 220 min contact time, 1.45 g/L dosage, pH 7.3, and 5.7 mg/L initial concentration.
- This study highlights a promising method for treating estrogen-contaminated wastewater.
