title: Adsorptive removal of phenol from aqueous solution with zeolitic imidazolate framework-67.
abstract: ZIF-67(zinc-methylimidazolate framework-67), one of the zeolitic imidazolate frameworks (ZIFs), was used for the removal of phenol from aqueous solutions via adsorption and shows high adsorption capacity for phenol. The thermodynamic and kinetic adsorption behavior of ZIF-67 for phenol in water with concentration ranging from 50 to 300 ppm were investigated in a batch reactor and a ZIF-67 packed column, respectively. The effects of pH, contact time, zeta potential of the adsorbent and temperature on the adsorption behavior were evaluated, and the results demonstrated that the adsorption is primarily brought about by a specific favorable interaction (electrostatic interaction) between phenol and ZIF-67 surface. The suitability of the Langmuir adsorption model to the equilibrium data was investigated for each phenol-adsorbent system, which the results showed that the equilibrium data for all the phenol-sorbent systems fitted the Langmuir model. Thermodynamic parameters such as Gibbs free energy are calculated from the experimental data at different temperatures. The adsorbent could be perfectly regenerated at 120 °C with little loss in the adsorption ability.
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, PR China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Pan
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, PR China.
authors.forename: Zhi
authors.initials: Z
authors.lastname: Li
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, PR China.
authors.forename: Zhe
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, PR China.
authors.forename: Xiong-Shi
authors.initials: XS
authors.lastname: Tong
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, PR China.
authors.forename: Hai
authors.initials: H
authors.lastname: Li
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, PR China.
authors.forename: Chong-Zhi
authors.initials: CZ
authors.lastname: Jia
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, PR China.
authors.forename: Bei
authors.initials: B
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, PR China. Electronic address: cysun@cup.edu.cn.
authors.forename: Chang-Yu
authors.initials: CY
authors.lastname: Sun
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, PR China.
authors.forename: Lan-Ying
authors.initials: LY
authors.lastname: Yang
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, PR China. Electronic address: gjchen@cup.edu.cn.
authors.forename: Guang-Jin
authors.initials: GJ
authors.lastname: Chen
authors.affiliation: School of Chemistry and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, PR China. Electronic address: mady@zqu.edu.cn.
authors.forename: De-Yun
authors.initials: DY
authors.lastname: Ma
mesh_terms: D000327:Adsorption; D007093:Imidazoles / Q000737:chemistry*; D007700:Kinetics; D019800:Phenol / Q000032:analysis / Q000737:chemistry*; D010636:Phenols / Q000032:analysis / Q000737:chemistry*; D013696:Temperature; D013816:Thermodynamics; D014867:Water; D014874:Water Pollutants, Chemical; D018508:Water Purification / Q000379:methods*; D017641:Zeolites / Q000737:chemistry*; D015032:Zinc / Q000737:chemistry*
chemical_list: D007093:Imidazoles; D010636:Phenols; D014874:Water Pollutants, Chemical; D014867:Water; D017641:Zeolites; D019800:Phenol; D015032:Zinc
keywords: Adsorption; Aqueous solution; Phenol; Removal; Zinc-methylimidazolate framework-67