Removal of lead from synthetic wastewater using chemically modified Jackfruit leaves

Abstract

Heavy metal toxicity due to industrial waste water is a one of a threat to environment and living organisms. In this research, adsorption experiments were carried out using jackfruit leave powder as a bio-sorbent was assessed for Lead (Pb) adsorption from synthetic waste water. The effect of pH of waste water, contact time, adsorbent dosage and initial concentration of waste water were studied in batch process. The jackfruit leaves powder was modified by acetic acid to increase metal binding capacity. The batch experimental process was conducted for compares both modified and unmodified bio-sorbent adsorption capacity. The optimum contact time for the modified and unmodified bio-sorbent is 120 min and 150 min. The optimum pH value for both the biosorbent is 5, but modified bio-sorbent shows high metal binding capacity than unmodified samples. For modified biosorbent, metal binding capacity becomes a constant after reaching 90 ppm of initial concentration. Most suitable adsorbent dosage for both the modified and unmodified biosorbent is 3 g/ 100 ml of waste water. Results indicated that jackfruit leaves powder appeared to be the most practical use of adsorption of Lead from waste water. The modified jackfruit leaves bio-sorbent have higher ability to remove lead from waste water than unmodified bio-sorbent.