I want to know if there were any known experiment of electric discharge to oxyde the ion arsenic(III) into the ion arsenic(V).

  1. The feasibility of the electro-removal of arsenate (As(V)) and arsenite (As(III)) from aqueous solutions via capacitive deionization was investigated. The effects of applied voltage (0.0-1.2V) and initial concentration (0.1-200 mgL(-1)) on arsenic removal were examined. As evidenced, an enhancement of arsenic removal can be achieved by capacitive deionization.[...]

  2. Water‐soluble poly[glycidyl methacrylate N‐methyl d‐glucamine], P(GMA‐NMG), was synthesized and purified by ultrafiltration membranes. It was subsequently used for arsenic removal by coupling electro‐oxidation (EO) and polymer‐enhanced ultrafiltration (PEU) processes. In the EO‐PEU combined process, P(GMA‐NMG) was first used as supporting electrolyte during the exhaustive electro‐oxidation of As(III) to As(V) and then it was used to remove As(V) from aqueous solution through PEU.

  3. Electrochemical oxidation of arsenic(III). A consecutive electron-transfer reaction

    The reaction is based on two consecutive one-electron-transfer-step reaction of form:

    $$\ce{ As(III) <-> As(IV) <-> As(V)}$$

    $\ce{As(IV)}$ being the intermediate which has been postulated from the kinetic effect of the homogeneous reaction.


  1. Fan CS, et al. and J Hazard Mater. "Electro-removal of arsenic(III) and arsenic(V) from aqueous solutions by capacitive deionization" 2016.(link)

  2. Ozgur Arar, Nalan Kabay, Julio Sánchez , Bernabé L. Rivas, Marek Bryjak, Carlos Peña "Removal of arsenic from water by combination of electro‐oxidation and polymer enhanced ultrafiltration" 15 October 2013 DOI: https://doi.org/10.1002/ep.11876

  3. Henry A. Catherino "Electrochemical oxidation of arsenic(III). A consecutive electron-transfer reaction" J. Phys. Chem.1967,7,12,268-274, January 1, 1967 DOI: https://doi.org/10.1021/j100861a010
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