Removal and Recovery of Hazardous Metal Ions from the Industrial Effluent using Waste Fish Scale Impregnated Polyurethane Foam: Voltametric Method

Abstract

Waste fish scale powder shows Chitosan properties to adsorb hazardous metals of contaminated waste water or effluent. As the waste fish scale was crushed and dried to fine powder, it was coated on non reactive polyurethane foam. The objective of this study was to understand removal of hazardous metals using waste fish scale impregnated on polyurethane foam and quantify with voltametric method. Various parameters such as pH, amount of adsorbent, contact time etc. are studied. The best removal and recovery was found at pH-5 to 6, 300 mg amount of adsorbent (for 50 ml sample solution) and contact time of 90 min. This procedure was applied for determination of Zn (II), Cu (II), Cd(II), Pb(II), Fe(II) and Mn(II) in industrial effluent. The results indicated that waste fish scale impregnated on polyurethane foam is a promising adsorbent for removal of hazardous metals from industrial effluent.