title: Preparation of steam activated carbon from rubberwood sawdust (Hevea brasiliensis) and its adsorption kinetics.
abstract: Activated carbon was produced from a biowaste product, rubberwood sawdust (RWSD) using steam in a high temperature fluidized bed reactor. Experiments were carried out to investigate the influence of various process parameters such as activation time, activation temperature, particle size and fluidising velocity on the quality of the activated carbon. The activated carbon was characterized based on its iodine number, methylene blue number, Brauner Emmet Teller (BET) surface area and surface area obtained using the ethylene glycol mono ethyl ether (EGME) retention method. The best quality activated carbon was obtained at an activation time and temperature of 1h and 750 degrees C for an average particle size of 0.46 mm. The adsorption kinetics shows that pseudo-second-order rate fitted the adsorption kinetics better than pseudo-first-order rate equation. The adsorption capacity of carbon produced from RWSD was found to be 1250 mg g(-1) for the Bismark Brown dye. The rate constant and diffusion coefficient for intraparticle transport were determined for steam activated carbon. The characteristic of the prepared activated carbon was found comparable to the commercial activated carbon.
authors.affiliation: Department of Chemical Engineering, Alagappa College of Technology, Anna University, Chennai 600025, India.
authors.forename: B G
authors.initials: BG
authors.lastname: Prakash Kumar
authors.forename: K
authors.initials: K
authors.lastname: Shivakamy
authors.forename: Lima Rose
authors.initials: LR
authors.lastname: Miranda
authors.forename: M
authors.initials: M
authors.lastname: Velan
mesh_terms: D000327:Adsorption; D000465:Algorithms; D001391:Azo Compounds / Q000737:chemistry; D002244:Carbon / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry; D004058:Diffusion; D004391:Dust; D028482:Hevea / Q000737:chemistry*; D007202:Indicators and Reagents; D007220:Industrial Waste; D007700:Kinetics; D008855:Microscopy, Electron, Scanning; D010316:Particle Size; D013227:Steam; D013696:Temperature
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents; D004391:Dust; D007202:Indicators and Reagents; D007220:Industrial Waste; D013227:Steam; D002244:Carbon; C032806:Bismark Brown