Preparation and Characterization of Biochar from Coconut Shell Biomass Activated Potassium Hydroxide (KOH)

Biochar made from coconut shell biomass contains constituent elements such as, Al, Si, P, S, Cl, K, Ca, Cr, Mn, Fe, Ni, Cu, Zn, Sr, Ag, Cd, Zr, Br, and Rb. Where the largest components in this biochar are Potassium (K) of 2.17% and Aluminum (Al) of 1.51% and the presence of C-H and C-O groups with the presence of carbon, and has an amorphous material structure. After activation, the constituent components undergo an increase and chemical activation using KOH opens the pores and increases the surface area of biochar, thereby increasing its adsorption and reactivity capacity.