Adsorption of Heavy Metals Based on the Bio-Removal Method

Rapid population growth and active industrial development create many toxic wastes that converge in the environment. Some toxic components found in the environment include Cadmium (Cd), Copper (Cu), Mercury (Hg), and Lead (Pb). Adsorption application technology has now been developed using biomass from micro-organisms plants that are identified as bio-removal. Bio-removal is one alternative method used as the absorption of heavy metals. The purpose of this study is to adsorb heavy metals based on the bio-removal way. This study test the use of bio-removal method limited to pH variable (pH: 5,7,9). Bio-removal was made from biomass of sago stem waste which prepared in two steps, i.e., carbonation (250-400 degrees C) and activation (700 degrees C). The analysis resulted that the utilization of the bio-removal method as heavy metal adsorption can reduce each intensity of heavy metals in the environment. The optimal absorption result was at pH 5 for each element of heavy metal.