title: Kinetics of color removal by adsorption from water using activated clay.
abstract: Kinetics and mechanism of adsorption of one commercial basic dye (BB69) and one direct dye (DR227) from aqueous solutions using day were studied in the temperature range 15-75 degrees C. The clay was activated by treatment with sulfuric add. Two simplified kinetic models, pseudo first- and second-order equations, were tested. It was shown that the adsorption of both dyes could be well described by the pseudo second-order equation. Rate constants of the best-fit model were calculated, and the related apparent activation energies were also evaluated and discussed.
authors.affiliation: Department of Chemical Engineering, Lien-Ho Institute of Technology, Taiwan.
authors.forename: F C
authors.initials: FC
authors.lastname: Wu
authors.forename: R L
authors.initials: RL
authors.lastname: Tseng
authors.forename: R S
authors.initials: RS
authors.lastname: Juang
mesh_terms: D000327:Adsorption; D000538:Aluminum Silicates / Q000737:chemistry*; D002617:Chemical Industry; D000077215:Clay; D004396:Coloring Agents / Q000737:chemistry*; D007700:Kinetics; D008962:Models, Theoretical; D013696:Temperature; D014876:Water Pollution / Q000517:prevention & control*
chemical_list: D000538:Aluminum Silicates; D004396:Coloring Agents; D000077215:Clay