title: Adsorption of Basic Violet 14 in aqueous solutions using KMnO4-modified activated carbon.
abstract: In this paper, an activated carbon was prepared from Typha orientalis and then treated with KMnO(4) and used for the removal of Basic Violet 14 from aqueous solutions. KMnO(4) treatment influenced the physicochemical properties of the carbon and improved its adsorption capacity. Adsorption experiments were then conducted with KMnO(4)-modified activated carbon to study the effects of carbon dosage (250-1500 mg/L), pH (2-10), ion strength (0-0.5 mol/L), temperature, and contact time on the adsorption of Basic Violet 14 from aqueous solutions. The equilibrium data were analyzed by the Langmuir and Freundlich isotherms and fitted well with the Langmuir model. The pseudo-first-order, pseudo-second-order, and intraparticle diffusion models were used to evaluate the kinetic data and the pseudo-second-order kinetics was the best with good correlation.
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Jinan 250100, China.
authors.forename: Qianqian
authors.initials: Q
authors.lastname: Shi
authors.forename: Jian
authors.initials: J
authors.lastname: Zhang
authors.forename: Chenglu
authors.initials: C
authors.lastname: Zhang
authors.forename: Wei
authors.initials: W
authors.lastname: Nie
authors.forename: Bo
authors.initials: B
authors.lastname: Zhang
authors.forename: Huayong
authors.initials: H
authors.lastname: Zhang
mesh_terms: D000327:Adsorption; D002606:Charcoal / Q000737:chemistry*; D004396:Coloring Agents / Q000302:isolation & purification*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D009994:Osmolar Concentration; D011196:Potassium Permanganate / Q000737:chemistry*; D032401:Typhaceae / Q000737:chemistry; D014466:Ultraviolet Rays; D014867:Water / Q000737:chemistry
chemical_list: D004396:Coloring Agents; D011196:Potassium Permanganate; D014867:Water; D002606:Charcoal