Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 478, Issue -, Pages 344-352Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2016.06.032
Keywords
HKUST-1; Adsorption; Sulfachloropyridazine; Antibiotics
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Funding
- Australian Research Council [DP150103026]
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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 15 min 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 384 mgig at 298 K which is the highest compared to most of the materials for the antibiotics. The high adsorption capacity is attributed mainly to pi-pi stacking, hydrogen bonding and electrostatic interactions. (C) 2016 Elsevier Inc. All rights reserved.
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