title: Column study on the adsorption of Cr(III) and Cr(VI) using Pumice, Yarikkaya brown coal, Chelex-100 and Lewatit MP 62.
abstract: In the present study, adsorption of Cr(III) and Cr(VI) on Pumice (Pmc), Yarikkaya (YK) brown coal, Chelex-100, and Lewatit MP 62 is examined at room temperature and at initial chromium concentration of 1.0 x 10(-3) mol/L. Column method was carried out as a function of pH, concentration of Cr(III) and Cr(VI) ions, volume of samples and flow rate. The experimental data were evaluated by Freundlich and Langmuir isotherm models. The dynamic breakthrough capacities of the adsorbents for Cr(III) and Cr(VI) were calculated. The maximum chromium sorption occurred at 5 mL/min flow rate and 25 mL volume for all adsorbents. The results showed that the two readily available adsorbents namely Pmc and YK, were suitable for removing chromium from aqueous solution.
authors.affiliation: Suleyman Demirel University, Faculty of Arts and Science, Chemistry Department, 32260, Isparta, Turkey. fgode@fef.sdu.edu.tr
authors.forename: Fethiye
authors.initials: F
authors.lastname: Gode
authors.forename: Emel
authors.initials: E
authors.lastname: Moral
mesh_terms: D000327:Adsorption; D001709:Biotechnology / Q000295:instrumentation* / Q000379:methods*; D002614:Chelating Agents / Q000737:chemistry; D002852:Chromatography, Ion Exchange / Q000379:methods; D002857:Chromium / Q000737:chemistry*; D003031:Coal; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste; D007475:Ion Exchange Resins / Q000737:chemistry; D007477:Ions; D012117:Resins, Synthetic / Q000737:chemistry*; D017640:Silicates / Q000737:chemistry*; D013696:Temperature; D013997:Time Factors; D014867:Water / Q000737:chemistry
chemical_list: D002614:Chelating Agents; D003031:Coal; D007220:Industrial Waste; D007475:Ion Exchange Resins; D007477:Ions; D012117:Resins, Synthetic; D017640:Silicates; D014867:Water; D002857:Chromium; C024997:Chelex 100; C005144:pumice