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Chemically activated carbon nanofibers for adsorptive removal of bisphenol-A:Batch adsorption and breakthrough curve study

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Chinese Journal of Chemical Engineering 2023年第9期61卷 248-259页

作者： Wenming Hao Basma I.Waisi Timothy M.Vadas jeffrey r.mccutcheon College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuan 030024China Department of Chemical&Biomolecular Engineering University of ConnecticutStorrsCT 06269United States Department of Chemical Engineering University of BaghdadBaghdad 10071Iraq Department of Civil and Environmental Engineering University of ConnecticutStorrsCT 06269United States

Activated carbon nanofibers(ACNFs)with small diameter can significantly increase the accessibility of intra pores and accelerate adsorption of molecules from *** this study,ACNFs were made by blending K_(2)CO_(3)or ZnCl_(2)as the activating agent into the polyacrylonitrile(PAN)in dimethylformamide solution for electrospinning prior to ***-A(BPA),an endocrine disruption pollutant,is widely applied in the production of polycarbonate plastics and epoxy ***,BPA is often used as a model contaminant commonly removed via *** adsorption studies were used to evaluate the kinetics and adsorption capacity of the ***-Peterson(r-P)and Langmuir models were found to fit the isotherm of BPA adsorption better than Freundlich model,showing the homogeneous nature of the PAN originated *** adsorption kinetics was better described by the pseudo second-order model than that by the pseudo first-order *** fitting by intraparticle diffusion model indicates the adsorption of BPA onto ACNFs is mainly controlled by pore *** pH value and ionic strength reduced BPA adsorption from aqueous *** breakthrough curves studied in two different fixed bed systems(cross flow bed system and packed flow bed system)confirmed the scalability of BPA removal by ACNFs in dynamic adsorption *** modified dose-response model predicted well the fixed-bed outlet concentration profiles.

关键词： Activated carbon nanofibers(ACNFs) Chemical activation Bisphenol-A(BPA) Fixed bed Adsorption

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