ABSTRACT
A large amount of heavy metal usage in industrial processes and fast growing industrialization have resulted in the increase of heavy metals in industrial wastewater. Heavy metals including cadmium, chromium, mercury, arsenic, lead, and copper are toxic in nature when they enter into the ecosystem. Scanning electron microscopy was conducted on the dolochar sample to analyze its surface structure and porosity under the optimum condition. The pH of the solution is one of the important parameters that affects the adsorption process. The effect of pH on Pb(II) adsorption was investigated by varying the pH of the sample. The pseudo-first-order and pseudo-second-order kinetic models were applied for the investigation of the controlling mechanism of the adsorption process. The equilibrium adsorption isotherm study is very much useful for the understanding of the adsorption mechanism. Pb(II) removal from wastewater is possible by using abundantly available low-cost adsorbents.
