title: Microwave assisted solvent free green preparation and physicochemical characterization of surfactant-anchored cellulose and its relevance toward the effective adsorption of chromium.
abstract: The molecular interaction between tetrabutylammonium iodide (TBAI) and cellulose and its potential application for the adsorption of chromium is discussed in this paper. The biosorbent was prepared under solvent free conditions using microwave irradiation. A subtle balance between electrostatic and the hydrophobic effects governs the interaction of biopolymer with the surfactant. The interaction between the biosorbent and chromium was comprehensively studied using spectroscopic, thermal and surface analysis techniques. The various analytical parameters that influence the adsorption were optimized, and the maximum adsorption capacity of Cr(VI) obtained from the Langmuir isotherm model was found to be 16.67 mg g(-1). The sorption thermodynamics indicated the spontaneity and exothermic nature of adsorption. The biosorbent could be effectively regenerated using NaOH, which imparts greener aspect to the overall process.
authors.affiliation: Department of Chemistry, Birla Institute of Technology and Science (BITS), Pilani-Hyderabad Campus, JawaharNagar, Shameerpet Mandal, R.R. Dist. 500 078 (AP), India.
authors.forename: S
authors.initials: S
authors.lastname: Kalidhasan
authors.forename: Priyanka Amba
authors.initials: PA
authors.lastname: Gupta
authors.forename: Vinusha Reddy
authors.initials: VR
authors.lastname: Cholleti
authors.forename: A Santhana Krishna
authors.initials: AS
authors.lastname: Kumar
authors.forename: Vidya
authors.initials: V
authors.lastname: Rajesh
authors.forename: N
authors.initials: N
authors.lastname: Rajesh
mesh_terms: D000327:Adsorption; D002482:Cellulose / Q000737:chemistry*; D055598:Chemical Phenomena; D002857:Chromium / Q000737:chemistry*; D055772:Green Chemistry Technology; D008872:Microwaves; D013501:Surface-Active Agents / Q000737:chemistry*
chemical_list: D013501:Surface-Active Agents; D002857:Chromium; D002482:Cellulose