title: Removal of phenol and 4-chlorophenol by surfactant-modified natural zeolite.
abstract: In this study the adsorption characteristics of phenol and 4-chlorophenol by surfactant-modified zeolite was investigated. Batch studies were performed to evaluate the effects of various experimental parameters such as contact time, adsorbent dose, initial concentration, and temperature on the removal of phenol and 4-chlorophenol. The sorption kinetics was tested for intraparticle diffusion, Elovich, and pseudo-second order reaction and rate constants of kinetic models were calculated. Equilibrium isotherms for the adsorption of phenol were analyzed by Freundlich, Langmuir, and Tempkin isotherm models. Freundlich isotherm was found to best represent the data for phenol and 4-chlorophenol adsorption.
authors.affiliation: Environmental Engineering Department, Ondokuzmayis University, 55139 Samsun, Turkey. akuleyin@omu.edu.tr
authors.forename: Ayşe
authors.initials: A
authors.lastname: Kuleyin
mesh_terms: D000327:Adsorption; D001548:Benzalkonium Compounds / Q000737:chemistry; D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry; D002733:Chlorophenols / Q000737:chemistry*; D019800:Phenol / Q000737:chemistry*; D013501:Surface-Active Agents / Q000737:chemistry; D013696:Temperature; D013997:Time Factors; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*; D017641:Zeolites / Q000737:chemistry*
chemical_list: D001548:Benzalkonium Compounds; D002593:Cetrimonium Compounds; D002733:Chlorophenols; D013501:Surface-Active Agents; D014874:Water Pollutants, Chemical; D017641:Zeolites; C005883:zephiramine; D019800:Phenol; C029107:4-chlorophenol; D000077286:Cetrimonium