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Reference type: Journal
Authors: Mkhize DS, Nyoni H, Quinn LP, Mamba BB, Msagati TAM
Article Title: Molecularly imprinted membranes (MIMs) for selective removal of polychlorinated biphenyls (PCBs) in environmental waters: fabrication and characterization.
Publication date: 2017
Journal: Environmental Science and Pollution Research
Volume: 24
Issue: (12)
Page numbers: 11694-11707.
DOI: 10.1007/s11356-017-8829-4

Abstract: Molecularly imprinted membranes (MIMs) with selective removal properties for polychlorinated biphenyls (PCBs) were prepared through the phase inversion technique. The MIMs were obtained from casting the viscous solutions of molecularly imprinted polymers (MIPs), polysulfone (PSf), and N-methyl-2-pyrrolidone (NMP) as the casting solvent. Different membranes were prepared at different concentration of MIPs and PSf. The resulting MIMs were characterized by atomic force microscope (AFM), scanning electron microscope (SEM), and Fourier transform infrared spectroscopy (FTIR). Moreover, the performance of the membranes was evaluated by determining and interpreting the rejection (%), flux (F), permeability coefficient (P), permselectivity factor (α' PCB/DDT or anthracene), and enrichment factors of PCBs, dichlorodiphenyltrichloroethane (p,p'-DDT), and anthracene from model contaminated water using the dead-end filtration cell. Molecularly imprinted membrane prepared with 18 wt% PSf and 20 wt% MIP 4 exhibited a well-defined porous structure, which was accompanied by enhanced PCB enrichment. Furthermore, molecularly imprinted membrane showed good enrichment factors for PCBs even from spiked natural water samples of Hartbeespoort dam
Template and target information: 4-phenylphenol, BP-OH, fragment template, polychlorinated biphenyls, PCBs
Author keywords: molecularly imprinted membranes, polychlorinated biphenyls, permeation, permselectivity, rejection

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