title: Combined effect of ultrasound and nanoclay on adsorption of phenol.
abstract: Sorption of phenol onto organophilic bentonite (nanoclay) by ultrasonic irradiation was investigated. Tetrabutyl ammonium chloride (TBAC), N-acetyl-N,N,N trimethyl ammonium bromide (CTAB) and hexadecyl trimethyl ammonium chloride (HDTMA) were used as intercalating agents. Nanoclay was synthesized using sonication technique. TBAC modified nanoclay shows amorphous exfoliated nature, while CTAB and HDTMA modified nanoclay shows intercalating crystalline nature, which was revealed by XRD gram. Further FTIR reveals the presence of NH(2) and (CH(2))(n) groups onto clay platelet. Due to sonication, adsorption equilibrium was achieved within short period of time (10 min). It was found that intraparticle diffusion resistance has overcome due to sonication. The experimental data obtained obeys both Freundlich isotherm model and Langmuir adsorption isotherm model. HDTMA modified nanoclay shows higher parameter values.
authors.affiliation: Department of Chemical Engineering, Vishwakarma Institute of Technology, 666 Upper Indira Nagar Bibwewadi, Pune, Maharashtra 411037, India. shirishsonawane@rediffmail.com
authors.forename: Shirish
authors.initials: S
authors.lastname: Sonawane
authors.forename: Prashant
authors.initials: P
authors.lastname: Chaudhari
authors.forename: Shailesh
authors.initials: S
authors.lastname: Ghodke
authors.forename: Swapnil
authors.initials: S
authors.lastname: Ambade
authors.forename: Suhas
authors.initials: S
authors.lastname: Gulig
authors.forename: Ameya
authors.initials: A
authors.lastname: Mirikar
authors.forename: Abhishek
authors.initials: A
authors.lastname: Bane
mesh_terms: D000538:Aluminum Silicates / Q000737:chemistry*; D001546:Bentonite / Q000737:chemistry; D000077215:Clay; D007364:Intercalating Agents / Q000737:chemistry; D046529:Microscopy, Electron, Transmission; D008956:Models, Chemical; D053758:Nanoparticles; D010636:Phenols / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D013816:Thermodynamics; D014465:Ultrasonics; D014961:X-Ray Diffraction
chemical_list: D000538:Aluminum Silicates; D007364:Intercalating Agents; D010636:Phenols; D001546:Bentonite; D000077215:Clay