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Kinetic modeling of adsorption of vanadium and iron from acid solution through ion exchange resins

Transactions of Nonferrous Metals Society of China 2022年第7期32卷 2438-2450页

作者： joséhelber vinco Amilton Barbosa BOTELHO JUNIOR Heitor Augusto DUARTE Denise Crocce Romano ESPINOSA Jorge Alberto Soares TENÓRIO Department of Chemical Engineering Polytechnic School of the University of São Paulo(USP)Rua do Lago25005508-080São PauloSPBrazil

This study assessed the adsorption process and the reaction kinetics involved in the selective recovery of vanadium from an acid solution containing iron as an *** commercial resins were studied:Lewatit^(®)MonoPlus TP 209 XL,Lewatit^(®) TP 207,Dowex^(TM)M4195(chelating resin)and Lewatit^(®) MonoPlus S 200 H(strong cationic exchange resin).To investigate the effect of time on the adsorption process,batch experiments were carried out using the following initial conditions:pH 2.0,298 K,and a proportion of 1 g of resin to 50 mL of *** variation of pH over time was *** resin released less H+ions as the adsorption occurred,resulting in a lower drop of pH when compared to S 200 H *** adsorption by the resins was also evaluated through FT-IR and SEM−EDS before and after the *** the evaluated kinetic models(pseudo-first order,pseudo-second order,Elovich and intraparticle diffusion models),the pseudo-second order model best fits the experimental data of the adsorption of vanadium and iron by all of the four resins.M4195 resin showed the highest recovery of vanadium and the lowest adsorption of *** data,which are fundamental to industrial processes applications,are provided.

关键词： vanadium recovery adsorption chelating resins metal ions cation exchange resin batch experiments

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