Water pollution by heavy metal ions is thought to be on list of main environmental concerns because of its harmful impact on the ecosystem and public health [1]. The excessive rate of heavy metal concentration in the water causes a critical threat to health due to its non-degradability and toxicity [2]. Cu, Ni, and Zn are reported to being used in the mining, metallurgical, electroplating, and galvanization industries [3-5]. The effluents of these industries into the water commonly lead to adverse ecological problems and serious toxicological concerns. More proactive action in tackling the removal of heavy metal ions should be impressively necessitated for the sustainable uses of water in the future. Several physiochemical and biological processes, including adsorption, filtration, chemical precipitation, chemical oxidation and reduction, ion exchange, and electrochemical treatment have been developed to remove the dissolved heavy metals, dyes, phosphate, and nitrate from water and wastewaters [6, 7]. Most of these conventional methods consist of high operational maintenance costs, incomplete metal removal, high energy requirements and the generation of toxic residual metal sludge [8, 9]. Adsorption offers more benefits in terms of viability, availability, profitability, simplicity of operation, and good environmental aspect [10, 11]. Adsorption in column by means of continuous flow operations is generally desired to purify the wastewater due to its static treatment and efficiency [12, 13]. Small-scale column studies are generally performed to determine the accurate prediction of heavy metal ion removal and to represent its adsorption capability in wastewater treatment. Activated carbons have been broadly used as adsorbents for wastewater purification. Its high cost motivates the researchers to discover new and inexpensive materials for wastewater treatment. Several soils, named CL-ML2