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06:36
Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper
Published on: February 27, 2021
Adsorption of copper-citrate complexes on chitosan: equilibrium modeling
Pei-Jen Lu1, Wen-Wei Hu, Tai-Shang Chen
1Department of Chemical Engineering, Tatung University, Taipei 104, Taiwan.
Bioresource Technology
|October 14, 2009
Summary
This study investigated copper adsorption on chitosan from citrate solutions. A mathematical model was developed to predict copper adsorption capacity by considering protonated amine groups and various copper-citrate complexes.
Area of Science:
- Environmental Chemistry
- Materials Science
- Chemical Engineering
Background:
- Copper contamination in water poses environmental and health risks.
- Chitosan is a biodegradable polymer with potential for metal ion adsorption.
- Understanding complexation effects is crucial for efficient copper removal.
Purpose of the Study:
- To investigate the influence of copper-citrate complexes on copper adsorption by chitosan.
- To develop a mathematical model for predicting copper adsorption capacity.
- To optimize copper adsorption efficiency through ratio and pH adjustments.
Main Methods:
- Experimental determination of copper adsorption capacity under varying conditions.
- Development of a mathematical model based on key chemical parameters.
- Simulation of copper adsorption processes using the developed model.
Main Results:
- Identified key parameters influencing copper adsorption: protonated amine groups, anionic copper-citrate complexes, and anionic citrate complexes.
- The mathematical model accurately predicts copper adsorption capacities.
- Demonstrated that adjusting copper-citrate ratio and pH enhances adsorption efficiency.
Conclusions:
- The developed model provides insights into copper adsorption mechanisms on chitosan.
- Optimizing solution chemistry (copper-citrate ratio and pH) is effective for improving copper removal.
- This research contributes to developing effective strategies for copper remediation.
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