scholarly journals Effect of Key Parameters on Jacalin Extraction from Aqueous Phase into Anionic Reverse Micelles

2019 ◽  
Vol 19 (3) ◽  
pp. 737 ◽  
Author(s):  
Sharifah Fathiyah Sy Mohamad ◽  
Farhan Mohd Said ◽  
Mimi Sakinah Abdul Munaim ◽  
Shahril Mohamad
Keyword(s):  
Aqueous Phase ◽  
Reverse Micelles ◽  
Crude Protein ◽  
Volume Ratio ◽  
Micellar System ◽  
Phase Volume ◽  
Phase Volume Ratio ◽  
Nacl Concentration ◽  
Reverse Micellar System ◽  
Reverse Micellar

This study demonstrates the extraction of jacalin from crude extract of jackfruit seeds using anionic surfactant based reverse micellar system, sodium bis(2-ethylhexyl) sulfosuccinate (AOT) in isooctane. Effects of various parameters, such as, NaCl concentration (0.05 – 1 M), pH of aqueous phase (pH 4 – 10), AOT concentration (5 – 150 mM), contact time (5 – 30 min) and phase volume ratio (0.5-5) on the transfer efficiency of jacalin was evaluated by changing one factor at a time (OFAT) while keeping the other parameters constant. A maximum of 83% of protein transfer was achieved after equal volume of organic and aqueous phase was stirred for 20 min using 20 mM AOT at pH 5 aqueous phase containing 0.1 M NaCl. The findings demonstrated AOT reverse micellar system as a promising and effective method to extract and purify jacalin from crude protein mixture.

A reverse micellar system with Triton X-100: effect of surfactant polydispersity and preparation of monodisperse silica nanoparticles

Soft Matter ◽  
2020 ◽  
Vol 16 (2) ◽  
pp. 383-389
Author(s):  
Yaping Zhang ◽  
Bin Zhen ◽  
Yue Hu ◽  
Guohong Liang ◽  
Yaqing Feng
Keyword(s):  
Silica Nanoparticles ◽  
Reverse Micelles ◽  
Micellar System ◽  
Monodisperse Silica ◽  
Reverse Micellar System ◽  
Triton X ◽  
Reverse Micellar

Polydispersity of TX-100 surfactant affects the structure of reverse micelles remarkably, and TX-100 with 5–10 EO units endows the micelles with hierarchical micellar interface, favoring for the preparation of monodisperse silica nanoparticles.

Obtaining NiHCF Nanoparticles Using a Reverse Micellar System

2010 ◽  
Vol 644 ◽  
pp. 47-50
Author(s):  
Alberto Gutiérrez Becerra ◽  
Tanya Vega Venegas ◽  
Maximiliano Bárcena Soto ◽  
Norberto Casillas ◽  
José Inés Escalante
Keyword(s):  
Particle Size ◽  
Reverse Micelles ◽  
Metallic Nanoparticles ◽  
Reverse Microemulsion ◽  
Ammonium Bromide ◽  
Micellar System ◽  
Nickel Hexacyanoferrate ◽  
Size And Shape ◽  
Reverse Micellar System ◽  
Reverse Micellar

The synthesis of metallic nanoparticles using a reverse microemulsion medium brings controlled size and shape. In this study, reverse micelar system was employed for the synthesis of nickel hexacyanoferrate nanoparticles, NiHCF, by direct encapsulation in the water pools of reverse micelles formed in a pseudoternary system that consist of a mixture of 95 %wt. cetyltrimetyl ammonium bromide (CTAB) and 5 %wt. of a novel modified surfactant cetyltrimetyl ammonium ferrocyanate (CTA[Fe(CN6)]4-, CTAFe)/n-butanol/Hexane/Water. These NiHCF nanoparticles were produced with particle size ranging with 20 – 60 nm.

scholarly journals Liquid-liquid extraction of mineral acids using Tri-n-octylamine

2019 ◽  
Vol 54 (4) ◽  
pp. 339-346
Author(s):  
AK Karmakar ◽  
RK Biswas ◽  
MF Khatun
Keyword(s):  
Aqueous Phase ◽  
Acid Concentration ◽  
Organic Phase ◽  
Volume Ratio ◽  
Metal Extraction ◽  
Phase Volume ◽  
Concentration Region ◽  
Strong Base ◽  
Phase Volume Ratio ◽  
Mineral Acids

The present work reports the extraction behaviors of mineral acids: HClO4, HNO3, HCl and H2SO4 (commonly found in acidic bleed solutions from the hydrometallurgical route of metal extraction processes) by tri-n-octylamine (TOA) dissolved in distilled colorless kerosene. The systems have been investigated as functions of various experimental parameters, such as time, [acid], [TOA], temperature, extraction stage and the organic to aqueous phase volume ratio (O/A). Strippings was also examined. Equilibration time is less than 60 min. The acid concentration in the organic phase at equilibrium is increased with increasing initial acid concentration in the aqueous phase for all systems. However, the is after %extraction decreased with increasing initial acid concentration in the aqueous phase. The % extraction increased remarkably with increasing [TOA] for all cases. Being the ratio of the [acid] in the organic to aqueous phase at equilibrium equal to extraction ratio, D; the log D vs. log [TOA] plot is almost a curve with slope 1 at lower concentration region and with slope ~2 at higher concentration region. The extraction efficiency of TOA varies in the order: HClO4> HNO3> HCl > H2SO4. The acid-base-neutralization (extraction) reactions are exothermic with ΔH value much higher than -57 kJ/mol obtainable for of a strong acid - strong base neutralization. The loading capacity of extractant (g per 100 g TOA) for acids varied in the order: HClO4 (30.69) > HNO3 (20.49) > H2SO4 (17.87) > HCl (10.31). On using lower organic to aqueous phase volume ratio (O/A), the organic phase saturated with acid can be obtained on stage-wise extraction. The extracted organic phase, for all systems (excepting H2SO4-system) under investigation, can be stripped effectively in a single stage by 0.10 g eq/L NaOH solution to the extents of more than 96%. However, for H2SO4-system, two-stage stripping will be found effective. Bangladesh J. Sci. Ind. Res.54(4), 339-346, 2019

The catalytic effect of the sodium dodecyl sulfate–hexanol–water reverse micellar system

1999 ◽  
Vol 9 (3) ◽  
pp. 125-126 ◽  
Author(s):  
Lucia Ya. Zakharova ◽  
Farida G. Valeeva ◽  
Lyudmila A. Kudryavtseva ◽  
Elena P. Zhil’tsova
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Catalytic Effect ◽  
Sodium Dodecyl ◽  
Micellar System ◽  
Dodecyl Sulfate ◽  
Reverse Micellar System ◽  
Reverse Micellar

Kinetics of alkaline hydrolysis of ethylp-nitrophenyl ethylphosphonate in the reverse micellar system: sodium dodecyl sulfate-hexanol-water

2000 ◽  
Vol 49 (2) ◽  
pp. 265-269
Author(s):  
L. Ya. Zakharova ◽  
F. G. Valeeva ◽  
L. A. Kudryavtseva ◽  
V. E. Bel'skii ◽  
E. P. Zhil'tsova ◽  
...  
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Alkaline Hydrolysis ◽  
Sodium Dodecyl ◽  
Micellar System ◽  
Dodecyl Sulfate ◽  
Reverse Micellar System ◽  
Kinetics Of ◽  
Hydrolysis Of ◽  
System Sodium ◽  
Reverse Micellar
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