| Popis: |
Water pollution is one of the major problems faced by the entire world. The industrial and urban development leads to the water pollution due to accumulation of heavy metals in the wastewater. Several techniques have been used such as chemical precipitation, electrolysis, ion exchange etc. to treat such water contaminated with heavy metals. One of the best option is adsorption, which is easier environment friendly method to treat wastewater. By using various natural and agro-based wastes as an adsorbent is useful in reducing cost in adsorption process. An attempt to use natural material like soil with activation and banana peel has made to treat water contaminated with heavy metals. In this study, the copper ions are removed with adsorption by using banana peels and activated soil. The performance of adsorbent is observed by varying different parameters such as pH, adsorbent dose, initial concentration and contact time. It is found that the sufficient removal of Cu ions at optimum parameters like pH, adsorbent dose, initial concentration and contact time is at 5, 2 gm, 5 mg/l and 150 minute respectively for banana peels and 6, 2gm, 5mg/l and 150 minute respectively for activated soil. For all optimum parameters the maximum reduction in metal ions is observed in the range of 70% to 80% for banana peels whereas for activated soil it is 65 % to 75%. The R2 value in the present analysis is less than one, representing that the adsorption of copper ions onto both the adsorbents is favorable and the equilibrium data also fit well with Langmuir and Freundlich isotherm |
