Liquid–Liquid Equilibrium And Extraction Capacity of the PPG 425–NaNO3–H2O System

Theoretical Foundations of Chemical Engineering - In this work, we study the liquid–liquid phase equilibrium for a new extraction system with polypropylene glycol 425 (PPG 425) and sodium...     

A Deep Eutectic Solvent Based on Choline Chloride and Sulfosalicylic Acid: Properties and Applications

Theoretical Foundations of Chemical Engineering - The results of studying the physical properties of a deep eutectic solvent based on choline chloride and sulfosalicylic acid have been presented. A...     

New binary extractants and prospects of their application

The distribution of chlorides and nitrates of lanthanides from aqueous solutions has been investigated in the absence of a salting out agent using a new binary extractant, methyl trioctyl ammonium dialkyl phosphinate compared with methyl trioctyl ammonium dialkyl phosphate. Isotherms of the extraction of lanthanides have ben obtained. The extraction stoichiometry of these metals in systems with binary extractants is determined. It has been found that, in the case of the extraction of nitrates of lanthanides by methyl trioctyl ammonium dialkyl phosphate and dialkyl phosphinate, extractable compounds of varying composition are formed. The extraction and separation of lanthanide chlorides by the conventional counter-current scheme and by the scheme based on the technology of free supported liquid membranes (FSLMs) have been experimentally and computationally investigated. It has been found that, when using the FSLM scheme, an increase in the degree of extraction and separation of lanthanides is observed.     

Dynamics of Mass Transfer through the Interface between Immiscible Liquids under the Resonance Effect of Ultrasound

Theoretical Foundations of Chemical Engineering - The specific features of the resonance behavior of the radial vibrations of a droplet of liquid placed into an immiscible liquid have been...     

Extraction of Thiophene with Methyl Ether of Polyethylene Glycol 350

Theoretical Foundations of Chemical Engineering - The efficiency of polyethylene glycol methyl ether 350 (PEG ME-350) in the process of extracting thiophene from model motor fuel has been studied...     

Extraction of monocarboxylic acids with binary extracting agents based on amines and quaternary ammonium bases

The distribution of monocarboxylic acids is reported for extraction systems with binary extracting agents, namely, amine and quaternary ammonium base (QAB) salts of organic acids with widely varied acid dissociation constants (pK _a 1.5–10). Monocarboxylic acid extractability orders have been obtained for systems with binary extracting agents based on trioctylmethylammonium and trioctylammonium (TOA). The best extractability is shown by acids with long hydrocarbon radicals (butyric and caproic acids). Lactic acid is the least extractable. Extractive power orders have been obtained for QAB- and TOA-based binary extracting agents. For monocarboxylic acid extraction with QAB salts, the extractive power order correlates with the acid dissociation constants of the parent organic acids: trioctylmethylammonium p-tert-butylphenolate ≫ caprylate > dialkylphosphinate > dialkylmonothiophosphinate > dialkylphosphate > dinonylnaphthalene sulfonate > dialkyldithiophosphinate. The extractive power of the QAB-based binary extracting agents is much higher than that of the TOA salts.     

Interphase Distribution of Fe(III) and Zn(II) in Chloride Systems with Aliquat 336 in Polypropylene Glycol 425

Theoretical Foundations of Chemical Engineering - The recovery of iron(III) and zinc(II) ions using an aqueous two-phase system based on polypropylene glycol 425 and sodium chloride with the...     

Interphase Distribution of Caffeine and Coumarin in Extraction Systems with Polyethylene Glycol and Sodium Sulfate

Theoretical Foundations of Chemical Engineering - An environmentally friendly aqueous two-phase system based on polyethylene glycol and sodium sulfate has been proposed for the extraction of...     

On the Influence of Additives of Polymer,Sodium Nitrate,and 1-Methyl-2-Pyrrolidone on the Extraction of Thiophene in an n-Hexan–Water System

Theoretical Foundations of Chemical Engineering - The effect of individual and multicomponent additives—water-soluble polymers (polyethylene glycol 400, polypropylene glycol 425, and...     

Extraction of carboxylic acids with neutral extractants

Theoretical Foundations of Chemical Engineering - In the review, the features of the interphase distribution of weak acids (K а < 10–2) in the systems containing neutral...