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Updated: Feb 9, 2026
11:10
Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
Published on: May 23, 2018
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Recovery of V(V) from complex vanadium solution using capacitive deionization (CDI) with resin/carbon composite
Shenxu Bao1, Jihua Duan2, Yimin Zhang3
1School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, PR China; Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Wuhan, 430070, PR China.
Chemosphere
|June 2, 2018
Summary
Resin-activated carbon composite electrodes efficiently recover vanadium(V) using capacitive deionization. Optimal pH and applied potential enhance V(V) adsorption, enabling selective separation from impurities.
Area of Science:
- Materials Science
- Electrochemistry
- Environmental Engineering
Background:
- Vanadium recovery from complex solutions is crucial for resource management.
- Capacitive deionization (CDI) offers a promising method for ion separation.
- Developing efficient electrode materials for selective ion adsorption is essential.
Purpose of the Study:
- To fabricate and evaluate resin-activated carbon composite (RAC) electrodes for V(V) recovery.
- To investigate the influence of pH and applied potential on V(V) adsorption and reduction.
- To assess the selective separation of V(V) from impurity ions (Al, P, Si).
Main Methods:
- Fabrication of RAC electrodes.
- Capacitive deionization experiments under varying pH and applied potential.
- Analysis of ion adsorption mechanisms and elution/recycling strategies.
Main Results:
- RAC electrodes showed pH-dependent V(V) adsorption, with optimal performance at moderate pH.
- Applied potential significantly influenced V(V) adsorption, with 1.0 V being optimal.
- Selective adsorption was achieved: impurities adsorbed in electric double layers, V(V) by resin; efficient elution with NaOH confirmed recyclability.
Conclusions:
- RAC electrodes are effective for V(V) recovery via CDI, demonstrating stable cyclic performance.
- The study presents a novel and promising method for selective metal recovery from aqueous solutions.
- Optimized conditions (pH, potential) are key for efficient vanadium separation and resource enrichment.
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