Removal of arsenate from aqueous solution by electro-coagulation method using Al-Fe electrodes

Imran Ali, Vinod K. Gupta*, Tabrez A. Khan, Mohd Asim

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

241 Scopus citations

Abstract

Arsenic contamination in ground water is a worldwide problem. In the present work electro-coagulation (EC) has been evaluated as a treatment technology for arsenate [As(V)] contaminated water. EC is carried out using with Aluminum anode and Iron Cathode to assess their efficiency. Experiments were carried out to remove arsenic by the EC covering wide range in operating conditions such as pH(3-9), voltage (2-10 volts) and processing time (0-14 min), initial arsenic conc. (2-30 mgL -1). Arsenate removal obtained was highest at pH 5-8 with 2-5 mgL -1 conc. of arsenate as initial concentration after 12 minutes processing time at 3 volts. The technique was able to bring down arsenate concentration in ground water to less than 10 μgL -1.

Original languageEnglish
Pages (from-to)1898-1907
Number of pages10
JournalInternational Journal of Electrochemical Science
Volume7
Issue number3
StatePublished - Mar 2012
Externally publishedYes

Keywords

  • Aluminum anode
  • Arsenate removal
  • Electro-coagulation
  • Ground water
  • Iron cathode

ASJC Scopus subject areas

  • Electrochemistry

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