Abstract
Adsorption is an effective method in treating heavy metals of wastewater. The presence of high dissolved Copper (Cu) and Zinc (Zn) concentration in industrial wastewater contribute to the decoloration of water and can cause health problems for long-term exposure to these heavy metals. This studies investigate eggshell as an alternative adsorbent. The effects of contact time, initial metal concentration and adsorbent dosage were studied in batch experiments. The Cu and Zn concentrations were analysed triplicate using Spectrophotometer (Model: DR 2800). The result shows that more than 90% removal of Cu and Zn occurred at optimum contact hours of 60 minutes and 120 minutes respectively while optimum initial concentration was 1 ppm for Cu removal and 2 ppm for Zn removal. Based on the present results, the application of the eggshell is a potential and economic treatment for excessive Cu and Zn content in wastewater treatment plant.
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