scholarly journals A minimal predictive model for better formulations of solvent phases with low viscosity

2020 ◽  
Vol 6 ◽  
pp. 3 ◽  
Author(s):  
Maximilian Pleines ◽  
Maximilian Hahn ◽  
Jean Duhamet ◽  
Thomas Zemb
Keyword(s):  
Heavy Metals ◽  
Uranyl Nitrate ◽  
Liquid Extraction ◽  
High Load ◽  
Macroscopic Scale ◽  
Knowledge Based ◽  
Low Viscosity ◽  
Liquid Liquid Extraction ◽  
Viscosity Increase ◽  
Extraction Processes

The viscosity increase of the organic phase when liquid–liquid extraction processes are intensified causes difficulties for hydrometallurgical processes on industrial scale. In this work, we have analyzed this problem for the example of N,N-dialkylamides in the presence of uranyl nitrate experimentally. Furthermore, we present a minimal model at nanoscale that allows rationalizing the experimental phenomena by connecting the molecular, mesoscopic and macroscopic scale and that allows predicting qualitative trends in viscosity. This model opens broad possibilities in optimizing constraints and is a further step towards knowledge-based formulation of extracting microemulsions formed by microstructures with low connectivity, even at high load with heavy metals.

scholarly journals Application of NEAT for the Simulation of Liquid-liquid Extraction Processes with Poorly Specified Feeds

2021 ◽  
Author(s):  
Fabian Jirasek ◽  
Jakob Burger ◽  
Hans Hasse
Keyword(s):  
Liquid Extraction ◽  
Target Component ◽  
Test Cases ◽  
Separation Processes ◽  
Nmr Spectrum ◽  
Liquid Liquid Extraction ◽  
Full Knowledge ◽  
Extraction Processes ◽  
Chemical Groups ◽  
Fluid Separation

The conceptual design of fluid separation processes is particularly challenging if the considered mixtures are poorly specified, since classical thermodynamic models cannot be applied when the composition is unknown. We have recently developed a method (NEAT) to predict activity coefficients in such mixtures. It combines the thermodynamic group contribution concept with the ability of NMR spectroscopy to quantify chemical groups. In the present work, we describe how NEAT can be applied to equilibrium stage simulations of liquid–liquid extraction processes with poorly specified feeds. Only a single 13C NMR spectrum of the feed is needed for predicting the distribution of a target component for different process parameters, such as temperature or extracting agent. The predictions from several test cases are compared to results that are obtained using the full knowledge on the composition of the feed and surprisingly good agreement is found.

Separation and Purification of Lipases by Liquid-Liquid Extraction Processes

1996 ◽  
pp. 551-576 ◽  
Author(s):  
M. G. Carneiro-Da-Cunha ◽  
E. P. Melo ◽  
M. J. Sebastião ◽  
M. R. Aires-Barros ◽  
J. M. S. Cabral
Keyword(s):  
Liquid Extraction ◽  
Separation And Purification ◽  
Liquid Liquid Extraction ◽  
Extraction Processes

THE USE OF LIQUID-LIQUID EXTRACTION FOR HEAVY METALS RECOVERY AND REUSE FROM PLATING WASTEWATERS

2005 ◽  
Vol 2005 (9) ◽  
pp. 6077-6087
Author(s):  
Paul J. Usinowicz ◽  
Bruce F. Monzyk ◽  
H. Nicholas Conkle ◽  
J. Kevin Rose ◽  
Satya P. Chauhan
Keyword(s):  
Heavy Metals ◽  
Liquid Extraction ◽  
Liquid Liquid Extraction ◽  
Metals Recovery ◽  
Recovery And Reuse

Reverse aggregate nucleation induced by acids in liquid–liquid extraction processes

2014 ◽  
Vol 16 (16) ◽  
pp. 7339 ◽  
Author(s):  
Christophe Déjugnat ◽  
Sandrine Dourdain ◽  
Véronique Dubois ◽  
Laurence Berthon ◽  
Stéphane Pellet-Rostaing ◽  
...  
Keyword(s):  
Liquid Extraction ◽  
Liquid Liquid Extraction ◽  
Extraction Processes

scholarly journals Stoichiometry of An(iii)–DMDOHEMA complexes formed during solvent extraction

2018 ◽  
Vol 47 (32) ◽  
pp. 10906-10914 ◽  
Author(s):  
Patrik Weßling ◽  
Michael Trumm ◽  
Andreas Geist ◽  
Petra J. Panak
Keyword(s):  
Solvent Extraction ◽  
Fission Products ◽  
Liquid Extraction ◽  
Liquid Liquid Extraction ◽  
Extraction Processes

N,N′-Dimethyl,N,N′-dioctylhexylethoxymalonamide (DMDOHEMA) is used to separate An(iii) and Ln(iii) from fission products in several liquid–liquid extraction processes that aim at recycling actinides.

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