eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2016-02-02 4 2 403 410 5870 article Collin G. Joseph 1 Lawrence Teo Kah Hoong 1 Faujan B. H. Ahmad 2 Industrial Chemistry Program, School of science and Technology, Universiti Malaysia Sabah, 88999 Kota Kinabahu, Sabah, (Malaysia). Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang 434 00, Selangor (Malaysia). Activated carbons from rubber wood sawdust (RW) were prepared by physical and chemical activation using potassium hydroxide as the dehydrating agent. A two-stage activation process method was used; with semi-carbonization stage at 200°C for 15 minutes as the first stage followed by an activation stage at 500°C for 45 minutes as the second stage. The precursor material with the impregnation agent was exposed straightaway to semi-carbonization and activation temperature unlike the specific temperature progression as reported in the literature. All experiments were conducted in a laboratory scale muffle furnace under static conditions in a self generated atmosphere covering process parameters such as impregnation ratios. We found that by using this method, the RW20% prepared with the impregnation ratio of 20% had the highest Iodine Number and Methylene Blue adsorption capacity which were 72.39 mg/g and 40mg/g respectively. https://www.biotech-asia.org/vol4no2/preparation-and-characterization-of-activated-carbon-derived-from-rubber-wood-sawdust-heavea-brasiliensis-textural-and-chemical-characterization/ Activated carbon; two-stage activation process; physical; chemical properties