Abstract

• Rice husk is an agricultural waste abundantly available in rice-producing countries. In this work, biochar is a solid material that is produced by heat decomposition of rice husk biomass by wellknown pyrolysis method. Activated carbon was prepared by the conventional carbonization and KOH activation on a laboratory scale. The sample was calcined at 200 °C, 300 °C and 400 °C for 2 h to obtain biochar. The carbon structure of rice husk biochar activated carbon was examined by XRD. The chemical properties of the rice husk biochar activated carbon were confirmed by FTIR. The morphology of rice husk biochar activated carbon was determined by SEM. From FTIR analysis, three functional groups were found. According to SEM results, the average pore sizes of the samples were found to be about 6.15 μm at 200 °C, 5.80 μm at 300 °C and 4.13 μm at 400 °C respectively.