Excellent performance of copper based metal organic framework in adsorptive removal of toxic sulfonamide antibiotics from wastewater.
The increasing concerns on toxicity of sulfonamide antibiotics in water require a prompt action to establish efficient wastewater treatment processes for their removal. In this study, adsorptive removal of a model sulfonamide antibiotic, sulfachloropyridazine (SCP), from wastewater is presented for the first time using a metal organic framework (MOF). A high surface area and thermally stable MOF, HKUST-1, was synthesized by a facile method. Batch adsorption studies were systematically carried out using HKUST-1. The high surface area and unsaturated metal sites resulted in a significant adsorption capacity with faster kinetics. Most of the SCP was removed in 15min and the kinetic data were best fitted with the pseudo second order model. Moreover, isothermal data were best fitted with the Langmuir model. The thermodynamic results showed that the adsorption is a spontaneous and endothermic process. The adsorption capacity of HKUST-1 is 384mg/g at 298K which is the highest compared to most of the materials for the antibiotics. The high adsorption capacity is attributed mainly to π-π stacking, hydrogen bonding and electrostatic interactions.
Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
Muhammad Rizwan
MR
Azhar
Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
Hussein Rasool
HR
Abid
Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia; School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, Perth, WA 6027, Australia.
Hongqi
H
Sun
Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
Vijay
V
Periasamy
Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
Moses O
MO
Tadé
Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia. Electronic address: Shaobin.wang@curtin.edu.au.
Shaobin
S
Wang
D000327:Adsorption; D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000302:isolation & purification*; D003300:Copper / Q000737:chemistry*; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010316:Particle Size; D013449:Sulfonamides / Q000737:chemistry / Q000302:isolation & purification*; D013499:Surface Properties; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification*
D000900:Anti-Bacterial Agents; D003300:Copper; D009942:Organometallic Compounds; D013449:Sulfonamides; D062065:Wastewater; D014874:Water Pollutants, Chemical
Adsorption; Antibiotics; HKUST-1; Sulfachloropyridazine