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Removal of Lead from Sea Water using Electrolysis and Coprecipitation Method  

Jin, Hong-Sung (Department of Applied Mathematics, Chonnam National University)
Lee, Jae-Ho (Department of Materials Science and Engineering, Hongik University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.32, no.2, 2010 , pp. 149-154 More about this Journal
Abstract
The feasibility of lead removal by electrolytic coprecipitation was investigated. Electrolysis bath was divided into anode and cathode chamber with anion exchange resin filled membrane. Sea water was electrolyzed and pH of the electrolyte in cathode chamber was increased. Consequently it induced the formation of $Mg(OH)_2$ and $CaCO_3$. The colloidal type precipitates, hich have high surface area, adsorbed lead ions in sea water and coprecipitated. Sea water electrolyses were conducted at different current density. Concentrations of Mg, Ca and Pb in the solution were measured with titration and ASV method. Morphology and crystallography were analyzed with SEM, EDS and XRD. As pH and current density increased, most of lead ions in the sea water were successfully removed.
Keywords
Electrolysis; Anion exchange resin; Hydroxide; Carbonate; Coprecipitate;
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