Review on preparation and characterization of activated carbon from low cost waste materials

The selection of activating agents for the thermochemical creation high-grade activated carbon (AC) from agricultural residues and wastes, like feedstock, requires innovative techniques. Overcoming energy losses, using best methods to minimize secondary contamination increase absorptivity, are critical. present review focuses on study synthesis characteristics low cost carbon. Various investigators focus physico-chemical characterization AC prepared waste low-cost materials TGA, FTIR, XRD, SEM Physical properties bulk volatile matter content, moisture density, surface area, ash porosity, apparent acid iodine number, fixed carbon, soluble matter, pH were investigated analysed in detail by various researchers. Here, we also importance influence H3PO4, KOH, CaCl2, ZnCl2, H2SO4 discuss some preparation AC. These used researchers activation performed at conditions. covers adsorption isotherms that developed their work.