Preparation of AI2O3 pillared bentonite and effect of HNO3 for adsorption by pillared bentonite has been done. Activated bentonite using H2SO4 0,5 M, 1 M, 1,5 M, and 2 M. Then it was continued with adsorbed ammonium in 4, 8, 16, and 24 hours. The optimum condition of adsorption of bentonite is 2 M and adsorption time 24 hours. Bentonite pillarization using aluminium poly-oxy-cation which was AI…