title: Equilibrium studies for the adsorption of acid dye onto modified hectorite.
abstract: The adsorption of Acid dye, C.I. Acid Red 151 from aqueous solution onto modified hectorite at different concentrations and pH has been studied. Hectorite clay has been modified using two cationic surfactants, cetyldimethylbenzylammonium chloride and cetylpyridinium chloride. Present experimental study shows that acidic pH favours enhanced adsorption. The adsorption isotherms are described by means of Langmuir and Freundlich isotherms. The adsorption capacity has been found to be 208.33 and 169.49 mg g(-1) for the modified cetyldimethylbenzylammonium chloride-hectorite (CDBA-hect) and cetylpyridinium chloride (CP-hect), respectively.
authors.affiliation: Department of Chemical Engineering, A.C. College of Technology, Anna University, Chennai 25, Tamilnadu, India.
authors.forename: P
authors.initials: P
authors.lastname: Baskaralingam
authors.forename: M
authors.initials: M
authors.lastname: Pulikesi
authors.forename: V
authors.initials: V
authors.lastname: Ramamurthi
authors.forename: S
authors.initials: S
authors.lastname: Sivanesan
mesh_terms: D000327:Adsorption; D001391:Azo Compounds / Q000737:chemistry*; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004396:Coloring Agents / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D009281:Naphthalenes / Q000737:chemistry*; D017640:Silicates / Q000737:chemistry*; D013816:Thermodynamics; D014961:X-Ray Diffraction
chemical_list: C479461:Acid Red-151; D001391:Azo Compounds; D004396:Coloring Agents; D009281:Naphthalenes; D017640:Silicates; C013547:hectorite