scholarly journals Reactive Extraction of L (+) Tartaric Acid by Amberlite LA-2 in Different Solvents

2011 ◽  
Vol 8 (s1) ◽  
pp. S509-S515 ◽  
Author(s):  
I. Inci ◽  
Y. S. Asçi ◽  
A. F. Tuyun
Keyword(s):  
Tartaric Acid ◽  
Extraction Efficiency ◽  
Methyl Isobutyl Ketone ◽  
Distribution Coefficients ◽  
Reactive Extraction ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone ◽  
Initial Concentration ◽  
Maximum Removal ◽  
Extraction Equilibria

The extraction of L(+) tartaric acid from aqueous solutions by amberlite LA-2 is a secondary amine mixture in different diluent solvents. Extraction equilibria of L(+) tartaric acid by amberlite LA-2 in 1-octanol, cyclohexane, isooctane, hexane, methyl isobutyl ketone (MIBK) solvents at temperature 298.15 K have been measured. The batch extraction experiments distribution coefficients (D), loading factors (Z) and extraction efficiency (E) were calculated. The maximum removal of L(+) tartaric acid is 91 % with MIBK and 0.92 mol.L-1initial concentration of Amberlite LA-2.

Extraction of Tartaric Acid with Trialkylamine

1998 ◽  
Vol 63 (3) ◽  
pp. 305-320 ◽  
Author(s):  
Radmila Tomovska ◽  
Filimena Poposka ◽  
Eva Volaufová ◽  
Aleš Heyberger ◽  
Jaroslav Procházka
Keyword(s):  
Mathematical Model ◽  
Tartaric Acid ◽  
Methyl Isobutyl Ketone ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone ◽  
Effect Of Solvent ◽  
Nonspecific Effects ◽  
Amine Complex ◽  
Tartaric Acid Solution ◽  
Extraction Equilibria

Extraction equilibria in the system aqueous solution of D-tartaric acid/solution of trialkylamine in binary diluent at 25 °C have been investigated. The amine used was a mixture of trialkylamines with C7-C9 alkyls, the diluent was a mixture hydrocarbon (n-heptane, kerosene) and a modifier (octan-1-ol, isodecanol, methyl isobutyl ketone). The effect of solvent composition on equilibrium was investigated and the experimental results were correlated using a mathematical model that takes into account chemical reactions involved in acid/amine complex formation, and the nonspecific effects of the nonideality of the system.

scholarly journals Tantalum and Niobium Selective Extraction by Alkyl-Acetophenone

Metals ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 654 ◽  
Author(s):  
Moussa Toure ◽  
Guilhem Arrachart ◽  
Jean Duhamet ◽  
Stephane Pellet-Rostaing
Keyword(s):  
Extraction Efficiency ◽  
Methyl Isobutyl Ketone ◽  
Selective Extraction ◽  
Extraction Process ◽  
Liquid Extraction ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone ◽  
Waste Solution ◽  
Liquid Liquid Extraction ◽  
D Values

A study has been carried out on Ta and Nb recovery by a liquid-liquid extraction process using 4-methylacetophenone (4-MAcPh) as the organic phase. The 4-MAcPh was compared to methyl isobutyl ketone (MIBK) with respect to extraction efficiencies (D values) at different concentrations of H2SO4 in the aqueous phase. The results showed a similar extraction of Nb for both solvents. However, for Ta, extraction efficiency is increased by a factor of 1.3 for 4-MAcPh. In addition, the MIBK solubilized completely after 6 mol∙L−1 of H2SO4 against only a loss of 0.14–4% for 4-MAcPh between 6 and 9 mol∙L−1 of H2SO4. The potential of 4-MAcPh has also been studied to selectively recover Ta from a model capacitor waste solution. The results showed a selectivity for Ta in the presence of impurities such as Ag, Fe, Ni and Mn. The 4-MAcPh also presents the advantage of having physicochemical properties adapted to its use in liquid-liquid extraction technologies such as mixer-settlers.

Determination of Some Nitrophenols by Atomic Absorption Spectrometry (AAS) After Extraction of Ionic Associates Involving the Bipyridylocopper(II) or Phenanthrolinocopper(II) Complex

1994 ◽  
Vol 59 (10) ◽  
pp. 2227-2234 ◽  
Author(s):  
Václav Stužka ◽  
Jaromír Souček
Keyword(s):  
Molecular Weight ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Methyl Isobutyl Ketone ◽  
Absorption Spectrometry ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone ◽  
Indirect Determination ◽  
Ionic Associates

A new method has been developed for the indirect determination of nitroso- and nitrophenols by atomic absorption spectrometry (AAS) after extraction of ionic associates involving bipyridylocopper(II) (CuDP) or phenanthrolinocopper(II) (CuPH) complexes. Nitrobenzene and methyl isobutyl ketone appeared to be suitable for the extraction. It was possible to determine several tenths to hundredths of a milligram of nitrophenol in a litre. Extractable associates with CuDP and CuPH are formed by phenols possessing two substituents or by higher molecular weight phenols such as naphthol or hydroxyquinoline. Monosubstituted phenols fail to form associates of this kind.

Ce and Ca/Nb doped Pd-mesocellular foam catalysts for gas-phase conversion of acetone to methyl isobutyl ketone

2021 ◽  
pp. 111169
Author(s):  
Kalina Grzelak ◽  
Rouzana Pulikkal Thumbayil ◽  
Søren Kegnæs ◽  
Maciej Trejda ◽  
Anders Riisager
Keyword(s):  
Gas Phase ◽  
Methyl Isobutyl Ketone ◽  
Phase Conversion ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone

Ternary vapour-liquid equilibria in the system: benzene-cyclohexane-methyl isobutyl ketone

1958 ◽  
Vol 9 (1) ◽  
pp. 69-73 ◽  
Author(s):  
P. Dakshinamurty ◽  
G. Jayarama Rao ◽  
M.V.R. Acharya ◽  
C. Venkata Rao
Keyword(s):  
Methyl Isobutyl Ketone ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone
Sign in / Sign up

Export Citation Format

Share Document