Yanfen Niu, Yuwei Song, Aaron Albert Aryee, Rong Wang, Runping Han
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引用次数: 0
Abstract
Metal–organic frameworks (MOFs) have found a wide range of applications in the field of water treatment owing to their large specific surface area, well-developed cavities and abundant active centers. In this study, a magnetic MOF composite (Fe3O4/MIL-100(Fe)) was synthesized via a one-pot synthesis at room temperature, and its adsorption capacities towards diclofenac sodium (DS) and 2,4-dichlorophenoxyacetic acid (2, 4-D) were assessed. The maximum adsorption capacity of Fe3O4/MIL-100(Fe) was 249 mg·g–1 for DS (pH 6.8, 313 K), whereas it was found to be 163 mg·g–1 for 2, 4-D (pH 3.0, 293 K). Results from fitting isotherm models with the equilibrium data suggested that both the Langmuir and Koble–Corrigan models be suitable for describing the adsorption equilibrium data. Results from kinetic model analysis suggested that both the pseudo-second-order and double-constant model could describe the uptake of DS and 2, 4-D onto Fe3O4/MIL-100(Fe) well, respectively. The adsorption processes include both homogeneous physical and chemical adsorptions, such as electrostatic interaction, hydrogen bonding, and π–π interaction. Furthermore, Fe3O4/MIL-100(Fe) showed good regeneration and reusability, indicating that the synthesized adsorbent is highly efficient, relatively cost-effective, and stable.
期刊介绍:
The Korean Journal of Chemical Engineering provides a global forum for the dissemination of research in chemical engineering. The Journal publishes significant research results obtained in the Asia-Pacific region, and simultaneously introduces recent technical progress made in other areas of the world to this region. Submitted research papers must be of potential industrial significance and specifically concerned with chemical engineering. The editors will give preference to papers having a clearly stated practical scope and applicability in the areas of chemical engineering, and to those where new theoretical concepts are supported by new experimental details. The Journal also regularly publishes featured reviews on emerging and industrially important subjects of chemical engineering as well as selected papers presented at international conferences on the subjects.