title: Cs+ removal from aqueous solutions through adsorption onto Florisil® impregnated with trihexyl(tetradecyl)phosphonium chloride.
abstract: This research determined the adsorption performance of Florisil® impregnated with trihexyl(tetradecyl)phosphonium chloride (Cyphos IL-101) in the process of Cs+ removal from aqueous solutions. The obtained Florisil® impregnated with the studied ionic liquid was characterized through energy dispersive X-ray analysis and Fourier transform infrared spectroscopy in order to verify that the impregnation with the ionic liquid had occurred. The adsorption process has been investigated as a function of pH, solid:liquid ratio, adsorbate concentration, contact time and temperature. The isotherm data was well described by a Langmuir isotherm model. The maximum adsorption capacities of the Florisil® impregnated with the studied ionic liquid was found to be 3.086 mg Cs+/g of adsorbent. The results indicated that the adsorption fitted well with the pseudo-second order kinetic model.
authors.affiliation: "Politehnica" University of Timisoara, Faculty of Industrial Chemistry and Environmental Engineering Blvd. Vasile Parvan no. 6, Timisoara 300223, Romania. mihaela.ciopec@chim.upt.ro.
authors.forename: Lavinia
authors.initials: L
authors.lastname: Lupa
authors.forename: Adina
authors.initials: A
authors.lastname: Negrea
authors.forename: Mihaela
authors.initials: M
authors.lastname: Ciopec
authors.forename: Petru
authors.initials: P
authors.lastname: Negrea
mesh_terms: D000327:Adsorption; D002586:Cesium / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D017633:Magnesium Silicates / Q000737:chemistry*; D009943:Organophosphorus Compounds / Q000737:chemistry*; D012996:Solutions; D012997:Solvents / Q000737:chemistry; D013052:Spectrometry, X-Ray Emission; D017550:Spectroscopy, Fourier Transform Infrared; D013816:Thermodynamics; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
chemical_list: D017633:Magnesium Silicates; D009943:Organophosphorus Compounds; D012996:Solutions; D012997:Solvents; D014874:Water Pollutants, Chemical; C559940:trihexyltetradecylphosphonium chloride; C005013:Florisil; D002586:Cesium