title: Adsorption kinetics of methyl violet onto perlite.
abstract: This study examines adsorption kinetics and activation parameters of methyl violet on perlite. The effect of process parameters like contact time, concentration of dye, temperature and pH on the extent of methyl violet adsorption from solution has been investigated. Results of the kinetic studies show that the adsorption reaction is first order with respect to dye solution concentration with activation energy of 13.2 kJ mol(-1). This low activation energy value indicates that the adsorption reaction is diffusion controlled. The activation parameters using Arrhenius and Eyring equations have been calculated. Adsorption increases with increase of variables such as contact time, initial dye concentration, temperature and pH.
authors.affiliation: Department of Chemistry, Faculty of Science and Literature, Balikesir University, 10100 Balikesir, Turkey. mdogan@balikesir.edu.tr
authors.forename: Mehmet
authors.initials: M
authors.lastname: Doğan
authors.forename: Mahir
authors.initials: M
authors.lastname: Alkan
mesh_terms: D000327:Adsorption; D000537:Aluminum Oxide / Q000737:chemistry*; D000891:Anti-Infective Agents, Local / Q000737:chemistry*; D005840:Gentian Violet / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D012822:Silicon Dioxide / Q000737:chemistry*; D013696:Temperature; D014873:Water Pollutants / Q000032:analysis*
chemical_list: D000891:Anti-Infective Agents, Local; D014873:Water Pollutants; C003076:Perlite; D012822:Silicon Dioxide; D005840:Gentian Violet; D000537:Aluminum Oxide