Removal of heavy metals from wastewater using low cost adsorbents

This study reveals that the potential of papaya seed, egg shell and coconut leafpowder were used as adsorbent for the removal of heavy metals such as lead, cadmium and chromium from known concentration of waste water was investigated. Hence the present study reveals that the low cost adsorbent of Chicken egg Shell is used for removing 85, 82 and 86 % of chromium, lead and cadmium respectively. Coconut leaf powder used for removing 87, 90 and 85 % of chromium, Lead and Cadmium respectively. Papaya seed powder is used for removing 80, 85 and 79 % Chromium, Lead and Cadmium respectively from wastewater from the initial metal ion concentration of 100 ppm solution. Batch adsorption studies demonstrated that the adsorbents had significant capacity to adsorb the chromium, Lead and Cadmium from aqueous solution. It was found that the adsorption increased with increase in contact time.