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Measurement and modeling for vanadium extraction from the (NaVO3 + H2SO4 + H2O) system by primary amine N1923
Alternative TitleJ. Chem. Thermodyn.
Liu, F.; Ning, P. G.; Cao, H. B.; Zhang, Y.
2015
Source PublicationJournal of Chemical Thermodynamics
Issue0Pages:13-21
Abstract

In this work, the solvent extraction of vanadium by using the primary amine N1923 as extractant was studied. Within different vanadium concentration ranges, the extraction reactions were determined using the slope method at T = 298.15 K based on the vanadium phase diagram. The slopes (the stoichiometric ratio) were determined as 5/3, 1 and 11/3 for (RNH2)(5/3) H3VO4; (RNH2)H3V3O9 and (RNH2)(11/3)H6V10O28, respectively. The thermodynamic model was established through regression of the experimental results with the Pitzer equation for both aqueous and organic phases by the General Algebraic Modelling System (GAMS). Three different sets of parameters and chemical equilibrium constants K were determined, which corresponded to the three extraction reactions. The orders of the lnK values are V-10 > V-3 > V-1 (organic V species), and the distribution coefficients (D-V) are D-V1 > D-V3 > D-V10. The new model was applied to predict the regularities of extraction yield along with different initial conditions, and the results agree well with the experimental values. (C) 2014 Elsevier Ltd. All rights reserved.

KeywordSolvent Extraction Vanadium Slope Method Pitzer Model Primary Amine N-butyl Phosphate Solvent-extraction Part i Thermodynamics Electrolytes Molybdenum Recovery Equation System Water
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Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/11787
Collection研究所(批量导入)
Recommended Citation
GB/T 7714
Liu, F.,Ning, P. G.,Cao, H. B.,et al. Measurement and modeling for vanadium extraction from the (NaVO3 + H2SO4 + H2O) system by primary amine N1923[J]. Journal of Chemical Thermodynamics,2015(0):13-21.
APA Liu, F.,Ning, P. G.,Cao, H. B.,&Zhang, Y..(2015).Measurement and modeling for vanadium extraction from the (NaVO3 + H2SO4 + H2O) system by primary amine N1923.Journal of Chemical Thermodynamics(0),13-21.
MLA Liu, F.,et al."Measurement and modeling for vanadium extraction from the (NaVO3 + H2SO4 + H2O) system by primary amine N1923".Journal of Chemical Thermodynamics .0(2015):13-21.
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