title: Adsorptive removal of antibiotic sulfonamide by UiO-66 and ZIF-67 for wastewater treatment.
abstract: Adsorptive removal of a toxic sulfonamide antibiotic, sulfachloropyradazine (SCP), from aqueous solution was studied on several metal organic frameworks, UiO-66 and ZIF-67, for the first time. UiO-66 exhibited a much higher adsorption capacity than ZIF-67, fast kinetics, and easy regeneration for reuse, demonstrating as a promising adsorbent in wastewater treatment processes. The batch adsorption shows an adsorption capacity of SCP at 417mg/g on UiO-66. The kinetic adsorption of SCP on UiO-66 reached equilibrium just in 10min and the kinetics fits accurately with a pseudo 2nd order model. A plausible mechanism was proposed based on pH effect, pKavalue of the adsorbate and Zeta potential of UiO-66. The high adsorption is mainly contributed to hydrophobicity and π-π interactions along with electrostatic interactions. Thermodynamic studies show the spontaneous adsorption and exothermic process. The easy regeneration and high adsorption capacity confirms structural stability of the robust UiO-66 in wastewater treatment processes, making it suitable for a large scale application.
authors.affiliation: Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
authors.forename: Muhammad R
authors.initials: MR
authors.lastname: Azhar
authors.affiliation: Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
authors.forename: Hussein R
authors.initials: HR
authors.lastname: Abid
authors.affiliation: Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
authors.forename: Vijay
authors.initials: V
authors.lastname: Periasamy
authors.affiliation: School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, Perth, WA 6027, Australia.
authors.forename: Hongqi
authors.initials: H
authors.lastname: Sun
authors.affiliation: Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
authors.forename: Moses O
authors.initials: MO
authors.lastname: Tade
authors.affiliation: Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia. Electronic address: shaobin.wang@curtin.edu.au.
authors.forename: Shaobin
authors.initials: S
authors.lastname: Wang
mesh_terms: D000327:Adsorption; D000900:Anti-Bacterial Agents / Q000302:isolation & purification*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D000073396:Metal-Organic Frameworks / Q000737:chemistry*; D015394:Molecular Structure; D013449:Sulfonamides / Q000302:isolation & purification*; D013499:Surface Properties; D013696:Temperature; D013816:Thermodynamics; D062065:Wastewater / Q000737:chemistry*; D014867:Water; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
chemical_list: D000900:Anti-Bacterial Agents; D000073396:Metal-Organic Frameworks; D013449:Sulfonamides; D062065:Wastewater; D014867:Water; D014874:Water Pollutants, Chemical
keywords: Adsorption; Metal-organic framework; Sulfonamide antibiotics; UiO-66; Water treatment; ZIF-67