Arsenic removal through electrocoagulation: Kinetic and statistical modeling

• Published in: Chemical Engineering Journal Vol. 155; no. 1; pp. 76 - 82
• Main Authors: Balasubramanian, N., Kojima, Toshinori, Srinivasakannan, C.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier B.V 01.12.2009; Elsevier BV; Elsevier
• Subjects: Adsorption; Adsorption kinetics; Aluminum; Applied sciences; Arsenic; Arsenic removal; Chemical engineering; Electrocoagulation; Exact sciences and technology; General purification processes; Isotherms; Pollution; Reactors; Response surface methodology; Sacrificial anodes; Surface chemistry; Waste water; Wastewaters; Water treatment and pollution; Arsenic removal; Adsorption kinetics; Electrocoagulation; Response surface methodology; Mild steel; Adsorption isotherm; Electrochemical reactor; Modeling; Operating conditions; Waste water; Design; Adsorption; Batchwise; Kinetics; Aqueous solution
• ISSN: 1385-8947; 1873-3212
• DOI: 10.1016/j.cej.2009.06.038

Arsenic removal from water/wastewater has been the subject of top priority among researchers/industries in recent years due its notorious characteristics. A novel technique of electrocoagulation has been attempted in the present investigation to remove arsenic from aqueous solution. Experiments were carried out in a batch electrochemical reactor using aluminum and mild steel sacrificial anodes. The mechanism of electrocoagulation has been modeled using adsorption isotherm kinetics. Experimental runs were designed by response surface methodology and the influence of combined effects of operating parameters on arsenic removal has been critically examined.