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Effective triclosan removal by using porous aromatic frameworks in continuous fixed-bed column studies
Summary
Researchers developed a porous aromatic framework material that effectively removes triclosan — an antimicrobial chemical in personal care products — from water in continuous flow systems. The material showed high removal efficiency, offering a promising approach for treating this emerging water contaminant.
Abstract Triclosan (TCS) has been regarded as an emerging contaminant in aquatic systems, so its efficient removal holds great significance. In this study, NPVMo@iPAF-1, with specific surface area of 665 m 2 /g, prepared by incorporating (NH 4 ) 5 H 6 PV 8 Mo 4 O 40 into porous aromatic frameworks (PAF) was obtained. And fixed-bed columns packed with NPVMo@iPAF-1 were employed for TCS removal. The experiment data strongly correlated with the Thomas and Yoon-Nelson models under different operation conditions. The pore preservation, electrostatic effect and the synergistic effect of π-π interaction contributed to the effective adsorption of TCS onto NPVMo@iPAF-1. The NPVMo@iPAF-1 fixed-bed column could be effectively regenerated by in-situ ozonation for more than 10 regeneration cycles. NPVMo@iPAF-1 turned out to be a promising adsorbent for removing TCS not only from pure water but also from reclaimed water and surface water samples.
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