title: Adsorption of phenol and reactive dye from aqueous solution on activated carbons derived from solid wastes.
abstract: Activated carbons were produced from several solid wastes, namely, waste PET, waste tires, refuse derived fuel and wastes generated during lactic acid fermentation from garbage. Activated carbons having various pore size distributions were obtained by the conventional steam-activation method and via the pre-treatment method (i.e., mixture of raw materials with a metal salt, carbonization and acid treatment prior to steam-activation) that was proposed by the authors. The liquid-phase adsorption characteristics of organic compounds from aqueous solution on the activated carbons were determined to confirm the applicability of these carbons, where phenol and a reactive dye, Black5, were employed as representative adsorbates. The hydrophobic surface of the carbons prepared was also confirmed by water vapor adsorption. The characteristics of a typical commercial activated carbon were also measured and compared. It was found that the activated carbons with plentiful mesopores prepared from PET and waste tires had quite high adsorption capacity for large molecules. Therefore they are useful for wastewater treatment, especially, for removal of bulky adsorbates.
authors.affiliation: Department of Chemical Engineering, Kyoto University, Kyoto 606-8510, Japan.
authors.forename: Kyuya
authors.initials: K
authors.lastname: Nakagawa
authors.forename: Akio
authors.initials: A
authors.lastname: Namba
authors.forename: Shin R
authors.initials: SR
authors.lastname: Mukai
authors.forename: Hajime
authors.initials: H
authors.lastname: Tamon
authors.forename: Pisit
authors.initials: P
authors.lastname: Ariyadejwanich
authors.forename: Wiwut
authors.initials: W
authors.lastname: Tanthapanichakoon
mesh_terms: D000327:Adsorption; D002244:Carbon; D004396:Coloring Agents / Q000302:isolation & purification*; D004202:Disinfectants / Q000737:chemistry / Q000302:isolation & purification*; D007220:Industrial Waste; D019800:Phenol / Q000737:chemistry / Q000302:isolation & purification*; D016062:Porosity; D012037:Refuse Disposal / Q000379:methods*; D012408:Rubber; D018508:Water Purification / Q000379:methods*
chemical_list: D004396:Coloring Agents; D004202:Disinfectants; D007220:Industrial Waste; D019800:Phenol; D002244:Carbon; D012408:Rubber