• DOI:10.2166/wst.2012.440
• Corpus ID: 13207510

Electrochemical degradation of 4-chlorophenol in aqueous solution using modified PbO(2) anode.

@article{Duan2012ElectrochemicalDO,
  title={Electrochemical degradation of 4-chlorophenol in aqueous solution using modified PbO(2) anode.},
  author={Xiaoyue Duan and Fang Ma and L. M. Chang},
  journal={Water science and technology : a journal of the International Association on Water Pollution Research},
  year={2012},
  volume={66 11},
  pages={
          2468-74
        }
}

• X. Duan, F. Ma, L. Chang
• Published 1 October 2012
• Materials Science
• Water science and technology : a journal of the International Association on Water Pollution Research

The electrochemical oxidation of 4-chlorophenol (4-CP) in aqueous solution was studied by electrochemical oxidation using modified PbO(2) electrode as anode. The influence of several operating parameters, such as initial 4-CP concentration, applied current density, and supporting electrolyte (Na(2)SO(4)) concentration was investigated. Ultraviolet spectroscopy and total organic carbon (TOC) measurements were conducted to study the kinetics of 4-CP electrochemical reaction and the mineralization efficiency of 4-CP. The experimental results showed that the 4-CP degradation always followed a pseudo-first-order kinetics. The higher mineralization of 4-CP and the lower current efficiency (CE) were obtained by the lower initial 4-CP concentration. The applied current density showed a positive influence on the degradation of 4-CP and the removal of TOC, but a higher applied current density led to a lower CE. Although Na(2)SO(4) concentration of 0.05 M resulted in a higher 4-CP and TOC removal, the result of one-way analysis of variance (ANOVA) indicates that Na(2)SO(4) concentration is not the significant parameter for 4-CP removal in electrochemical oxidation.