title: Adsorption of acid dye onto organobentonite.
abstract: Removal of Acid Red 151 from aqueous solution at different dye concentrations, adsorbent doses and pH has been studied. The bentonite clay has been modified using cationic surfactants, which has been confirmed using XRD and FT-IR analyses. Experimental result has shown that the acidic pH favours the adsorption. The adsorption isotherms are described by means of Langmuir and Freundlich isotherms. The adsorption capacity has been found to be 357.14 and 416.66 mg g(-1) for the cetyldimethylbenzylammonium chloride-bentonite (CDBA-bent) and cetylpyridinium chloride-bentonite (CP-bent), respectively. Kinetic studies show that the adsorption followed second-order kinetics.
authors.affiliation: Department of Chemical Engineering, A.C. College of Technology, Anna University, Chennai, Tamilnadu 600025, India.
authors.forename: P
authors.initials: P
authors.lastname: Baskaralingam
authors.forename: M
authors.initials: M
authors.lastname: Pulikesi
authors.forename: D
authors.initials: D
authors.lastname: Elango
authors.forename: V
authors.initials: V
authors.lastname: Ramamurthi
authors.forename: S
authors.initials: S
authors.lastname: Sivanesan
mesh_terms: D000327:Adsorption; D001546:Bentonite / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste / Q000517:prevention & control*; D007700:Kinetics; D012235:Rhodamines / Q000737:chemistry*; D013696:Temperature
chemical_list: D005456:Fluorescent Dyes; D007220:Industrial Waste; D012235:Rhodamines; D001546:Bentonite; C022027:lissamine rhodamine B