title: Factors affecting the adsorption of chromium (VI) on activated carbon.
abstract: The aim of this investigation was to determine the adsorption behavior of chromium (VI) on two different activated carbon samples produced from Tuncbilek lignite. The effects of the initial chromium (VI) concentration (250-1000 mg/L), temperature (297-323 K) and pH (2.0-9.5) on adsorption were investigated systematically. The effectiveness of the parameters on chromium adsorption was found to be in the order of pH, the initial Cr(VI) concentration and the temperature. Increasing the pH from 2.0 to 9.5 caused a decrease in adsorption. However, the adsorption was increased by increasing the initial Cr(VI) concentration and temperature. The multilinear mathematical model was also developed to predict the Cr(VI) adsorption on activated carbon samples within the experimental conditions.
authors.affiliation: Istanbul Technical University, Chemical and Metallurgical Engineering Faculty, Maslak, Istanbul, Turkey. kmyavuz@itu.edu.tr
authors.forename: Reha
authors.initials: R
authors.lastname: Yavuz
authors.forename: Ilkün
authors.initials: I
authors.lastname: Orbak
authors.forename: Nilgün
authors.initials: N
authors.lastname: Karatepe
mesh_terms: D000327:Adsorption; D002244:Carbon / Q000737:chemistry*; D002857:Chromium / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D013696:Temperature
chemical_list: D002857:Chromium; D002244:Carbon