title: Adsorption of basic dyes on granular activated carbon and natural zeolite.
abstract: The adsorption of basic dyes from aqueous solution onto granular activated carbon and natural zeolite has been studied using an agitated batch adsorber. The influence of agitation, initial dye concentration and adsorbent mass has been studied. The parameters of Langmuir and Freundlich adsorption isotherms have been determined using the adsorption data. Homogeneous diffusion model (solid diffusion) combined with external mass transfer resistance is proposed for the kinetic investigation. The dependence of solid diffusion coefficient on initial concentration and mass adsorbent is represented by the simple empirical equations.
authors.affiliation: Faculty of Technology and Metallurgy, University St. Cyril & Methodius Ruger Boskovic 16, Skopje, Republic of Macedonia. ameshko@ukim.edu.mk
authors.forename: V
authors.initials: V
authors.lastname: Meshko
authors.forename: L
authors.initials: L
authors.lastname: Markovska
authors.forename: M
authors.initials: M
authors.lastname: Mincheva
authors.forename: A E
authors.initials: AE
authors.lastname: Rodrigues
mesh_terms: D000327:Adsorption; D002606:Charcoal / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry*; D004058:Diffusion; D007700:Kinetics; D008956:Models, Chemical; D013816:Thermodynamics; D013997:Time Factors; D017641:Zeolites / Q000737:chemistry*
chemical_list: D004396:Coloring Agents; D017641:Zeolites; D002606:Charcoal