Developmentof Hydrotalcite as an Adsorbent to Remove Heavy Metals in Lead and Chromium Solutions

This research work studies on the development of hydrotalcite mixed oxides as an adsorbent for the heavy metal removal application. The main objective of the study is to develop hydrotalcite mixed oxides which can adsorb optimum capacity of heavy metals ions. This is because of the increasing of heavy metals content in water, soil as well as food and also excess exposure to them can lead to damage in organism structure especially human beings and aquatic life. Based on previous researches, characteristics of hydrotalcite mixed oxides which are high surface area, porosity and basicity, are effectives for adsorption process. Hydrotalcite mixed oxides will be synthesized by using co-precipitation method and characterized to identify their composition, pore size, surface area and surface morphology using the equipment such as X-Ray Diffractometer (XRD), BET Surface Area Analyzer and Field Emission Scanning Electron Microscope (FESEM). After characterization, the hydrotalcites mixed oxides prepared will be tested for its efficiency in removing heavy metals suchas lead (Pb) and chromium (Cr) ions in aqueous solutions. The concentration of heavy metals left in the sample after adsorption process was measured by using Atomic Absorption Spectrometer (AAS) to identify the percentage of adsorption. Optimum adsorption capacity ofheavy metals is expected to be the result for this research