Abstract
AbstractLimit of World Health Organization standard for safe amount Cu(II) in drinking water is 5 mg/L. The large usage of this material is reported to be the cause of various environmental and health hazard. Adsorption process that stands for the most common techniques due to its low cost and relative high efficiency, could perform its removal from wastewater. However, the most common adsorbents remain expensive compared with other potential natural and available adsorbents. In this work, natural and synthetic phosphates are tested for their efficacy to remove Cu(II) from contaminated water solution. Results were compared with those found with activated carbon used as reference. Effect of pH, adsorbent doses, temperature, and initial concentrations on the uptake of Cu ions by the adsorbent were examined based on statistical experimental design. Physical treatment was made to increase adsorption capacity of the tested adsorbents. The thermodynamic parameters such as free energy (ΔG°), enthalpy (ΔH°), and ...
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