Abstract

Anurag Tewari^1*, P P Paroha¹ and Sadhna Awasthi²

DOI : http://dx.doi.org/10.13005/ojc/380613

This paper describes observations made on studies carried in laboratory trials by using electro-coagulation process using iron electrodes. The purpose of this study is to present the iron electrode-based EC procedure, its superiority over other technologies used for removing arsenic from ground water and surface water. In order to reduce arsenic (As), it was also necessary to understand the basics of the electrochemical process (EC) and the significance of its operating conditions, such as anode materials, applied voltage, pH and anode distance. At different concentration of Arsenic (500ppb, 200ppb & 100 ppb) it was observed that with the higher concentration i.e. 500 ppb there is faster decrease in arsenic concentration at 6.5 pH. While, when using different current density 0.5 A & 1.0 A at (12V) almost same results were obtained i.e. arsenic removal took place in same time duration at a pH range of 3.5 to 6.5. It was also observed that arsenic concentration decreases with electrode spacing, size of electrodes and contact time of treatment.

Arsenic; Contamination; Electrodes; Electro-coagulation; Ground water

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