Related Experiment Video
Updated: Dec 17, 2025
10:33
Generation of Alginate Microspheres for Biomedical Applications
Published on: August 12, 2012
21.6K
Network interior and surface engineering of alginate-based beads using sorption affinity component for enhanced
Yumeng Zhao1, Lixue Gai1, Hao Liu1
1Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China.
International Journal of Biological Macromolecules
|June 24, 2020
Summary
A novel alginate-based bio-sorbent, SA-La@PEI, effectively removes excess phosphate from water. This environmentally friendly material shows high adsorption capacity and selectivity, offering a promising solution for phosphate decontamination.
Area of Science:
- Environmental Science
- Materials Science
- Chemical Engineering
Background:
- Excessive phosphate discharge causes significant environmental problems, including eutrophication.
- Development of efficient and selective adsorbents is crucial for phosphate removal from water bodies.
Purpose of the Study:
- To fabricate an environmentally friendly and highly efficient bio-sorbent (SA-La@PEI) for phosphate removal.
- To investigate the adsorption performance, selectivity, and mechanism of the developed bio-sorbent.
Main Methods:
- Fabrication of SA-La@PEI using alginate beads, lanthanum, and poly(ethylenimine).
- Characterization of SA-La@PEI using SEM, FTIR, XRD, and XPS.
- Adsorption experiments to evaluate capacity, selectivity, and mechanism.
Main Results:
- SA-La@PEI demonstrated an excellent adsorption capacity of 121.2 mg/g for phosphate.
- The material exhibited outstanding selectivity for phosphate over other common anions (NO3-, HCO3-, SO42-, Cl-).
- Dominant adsorption mechanisms identified as chemical precipitation and electrostatic attraction.
Conclusions:
- SA-La@PEI is a low-cost, mechanically strong, and highly efficient bio-sorbent for phosphate removal.
- The developed material shows significant promise for the decontamination of phosphate-polluted water.
- This study offers a sustainable approach to mitigating phosphate pollution.
