Comparison of physio-chemical characterization of Ceiba Pentradenta wood waste and Ipomea Carnia stem waste by H3PO4 treatment for the dye removal

Abstract

Ceiba Pentradenta wood waste and Ipomea Carnia stem waste has been activated using phosphoric acid and shows excellent improvement in their surface characteristic. Adsorption properties along with surface functional groups in surface morphology play a significant role. Micropores, mesopores and macropores are seen in the activated carbon. The resulting samples were characterized by nitrogen adsorption measurements at 77 K to obtain surface area and pore size distributions.SEM analysis has been carried out to determine its pore structure and the Fourier transformation infrared spectroscopy techniques was used for the investigation of surface functional groups. Physico-Chemical characteristics such as bulk density, moisture content, ash content, matter soluble in water, matter soluble in acid, pH, conductivity, porosity, pHzpc, decolourising power and surface area have been carried out to assess the suitability of the carbon as absorbent. Ceiba Pentradenta wood waste and Ipomea Carnia stem waste showed a good result by H3PO4 impregnation process followed by activation at 800 ° C under nitrogen atmosphere.