Tags

Type your tag names separated by a space and hit enter

Electro-enhanced removal of copper ions from aqueous solutions by capacitive deionization.
J Hazard Mater. 2014 Aug 15; 278:8-15.JH

Abstract

This study was performed to determine the feasibility of electrosorptive removal of copper ions from aqueous solutions using a capacitive deionization process. The electrosorptive potential of copper ions was determined using cyclic voltammetry measurements, and copper electrodeposition could be suppressed at a voltage less than 0.8 V. Importantly, the experimental results demonstrated a significant enhancement of electrosorption capability of copper ions using the activated carbon electrodes under electro-assistance, associated with electrical double-layer charging. At 0.8 V, the equilibrium electrosorption capacity was enhanced to 24.57 mg/g based on the Langmuir model, and the electrosorption constant rate was increased to 0.038 min(-1) simulated by a first-order kinetics model. Moreover, the activated carbon electrode showed great regeneration performance for the removal of low level copper ions. Additional experiments regarding electrosorption selectivity were performed in the presence of sodium chloride, natural organic matter, or dissolved silica. Copper ions that were preferentially electroadsorbed on the electrode surface can be effectively removed in a competitive environment. Therefore, the electrosorption process using activated carbon electrodes can be recommended to treat copper solutions at low concentrations for wastewater treatment and water purification.

Authors+Show Affiliations

Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou-Shan Rd., Taipei 10617, Taiwan.Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou-Shan Rd., Taipei 10617, Taiwan.Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou-Shan Rd., Taipei 10617, Taiwan. Electronic address: chiahunghou@ntu.edu.tw.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24937658

Citation

Huang, Shu-Yun, et al. "Electro-enhanced Removal of Copper Ions From Aqueous Solutions By Capacitive Deionization." Journal of Hazardous Materials, vol. 278, 2014, pp. 8-15.
Huang SY, Fan CS, Hou CH. Electro-enhanced removal of copper ions from aqueous solutions by capacitive deionization. J Hazard Mater. 2014;278:8-15.
Huang, S. Y., Fan, C. S., & Hou, C. H. (2014). Electro-enhanced removal of copper ions from aqueous solutions by capacitive deionization. Journal of Hazardous Materials, 278, 8-15. https://doi.org/10.1016/j.jhazmat.2014.05.074
Huang SY, Fan CS, Hou CH. Electro-enhanced Removal of Copper Ions From Aqueous Solutions By Capacitive Deionization. J Hazard Mater. 2014 Aug 15;278:8-15. PubMed PMID: 24937658.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Electro-enhanced removal of copper ions from aqueous solutions by capacitive deionization. AU - Huang,Shu-Yun, AU - Fan,Chen-Shiuan, AU - Hou,Chia-Hung, Y1 - 2014/06/02/ PY - 2014/03/18/received PY - 2014/05/23/revised PY - 2014/05/26/accepted PY - 2014/6/18/entrez PY - 2014/6/18/pubmed PY - 2015/4/4/medline KW - Activated carbon electrode KW - Capacitive deionization KW - Copper ion KW - Electrosorption SP - 8 EP - 15 JF - Journal of hazardous materials JO - J Hazard Mater VL - 278 N2 - This study was performed to determine the feasibility of electrosorptive removal of copper ions from aqueous solutions using a capacitive deionization process. The electrosorptive potential of copper ions was determined using cyclic voltammetry measurements, and copper electrodeposition could be suppressed at a voltage less than 0.8 V. Importantly, the experimental results demonstrated a significant enhancement of electrosorption capability of copper ions using the activated carbon electrodes under electro-assistance, associated with electrical double-layer charging. At 0.8 V, the equilibrium electrosorption capacity was enhanced to 24.57 mg/g based on the Langmuir model, and the electrosorption constant rate was increased to 0.038 min(-1) simulated by a first-order kinetics model. Moreover, the activated carbon electrode showed great regeneration performance for the removal of low level copper ions. Additional experiments regarding electrosorption selectivity were performed in the presence of sodium chloride, natural organic matter, or dissolved silica. Copper ions that were preferentially electroadsorbed on the electrode surface can be effectively removed in a competitive environment. Therefore, the electrosorption process using activated carbon electrodes can be recommended to treat copper solutions at low concentrations for wastewater treatment and water purification. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/24937658/Electro_enhanced_removal_of_copper_ions_from_aqueous_solutions_by_capacitive_deionization_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(14)00419-1 DB - PRIME DP - Unbound Medicine ER -