Abstract: Due to increase in population coupled with mining, extraction and use of various metals as different industrial and household materials, the load of toxic metal pollution in the environment is increasing, so there is a need for the removal of these pollutants. A potential low cost, easily available and environment friendly adsorbent (citrus fruits peel) was used for the removal of Copper (II). Experiments were conducted in batch as a function of temperature, pH, adsorbent dose, initial concentration and time. The removal efficiency of Cu (II) was maximum at 30°c, pH-6, adsorbent dose of 2.5%, contact time 180 minutes from the aqueous solution having initial metal concentration of 100 mg/l. Langmuir and Freundlich adsorption isotherm was employed to evaluate the optimum adsorption capacity of the adsorbent. The adsorption capacity was found to be higher at 18.2mg/g. Kinetic studies showed that first order model was more suitable than the second order model. Adsorption experiment was also conducted in fixed bed column using different metal concentrations, 100% removal was achieved for the concentrations 100mg/l and 150mg/l. From this study it is found that the selected adsorbent is having high potential to remove Cu (II) and needs further study.
Keywords; % Removal, Adsorption, Adsorption isotherm, Citrus fruits peel, Copper
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