Extraction of formic acid from aqueous solution using polyethylene glycol /phosphate salt aqueous two-phase system

2020 ◽  
pp. 1-12 ◽  
Author(s):  
Meysam Azadian ◽  
Hossein Ghanadzadeh Gilani ◽  
Hossein Rajabi-Kuyakhi ◽  
Ali Yeganiyan
Keyword(s):  
Aqueous Solution ◽  
Polyethylene Glycol ◽  
Formic Acid ◽  
Phase System ◽  
Two Phase ◽  
Aqueous Two Phase System

Phase Diagram of Aqueous Two-Phase System (ATPS) Composed of Polyethylene Glycol (PEG) and Gelatin

2012 ◽  
Vol 554-556 ◽  
pp. 286-294 ◽  
Author(s):  
Chao Ma ◽  
Xiao Dong Chen ◽  
Yin Qiu Kong ◽  
Li Ming Che
Keyword(s):  
Phase Diagram ◽  
Aqueous Solution ◽  
Phase Separation ◽  
Polyethylene Glycol ◽  
Solid Content ◽  
Phase System ◽  
Dense Phase ◽  
Two Phase ◽  
Aqueous Two Phase System ◽  
First Time

Phase diagram of aqueous two-phase system (ATPS) composed of polyethylene glycol (PEG) and gelatin is of paramount importance for the application of such system in microencapsulation of bioactive compounds. Phase separation of PEG/gelatin aqueous solution was investigated in the present work and the phase diagram of resultant ATPS was reported for the first time. The results show that phase separation will happen if the solid content of PEG/gelatin aqueous solution is higher than a critical value, resulting in an ATPS. The resultant ATPS consists of a low-density phase enriched in PEG and a dense phase enriched in gelatin. The phase compositions of the resultant ATPS were determined accurately using the method developed. The phase diagrams obtained show that higher solid content is required for the phase separation of PEG10,000/gelatin aqueous solution when compared with that of PEG20,000/gelatin one. And PEG is found to be more hydrophilic when compared with gelatin.

Polyethylene glycol-modified avidin: A novel agent for the selective extraction of biotinylated immune-complex in an aqueous two-phase system

1996 ◽  
Vol 7 (3) ◽  
pp. 289-296 ◽  
Author(s):  
Hiroyuki Nishimura ◽  
Nobuhiro Munakata ◽  
Konosuke Hayashi ◽  
Masao Hayakawa ◽  
Hideki Iwamoto ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Immune Complex ◽  
Selective Extraction ◽  
Phase System ◽  
Two Phase ◽  
Aqueous Two Phase System ◽  
Novel Agent

Aqueous Two-Phase Extraction of Potassium Glycyrrhizinate with Polyethylene Glycol/(NH4)2SO4

2012 ◽  
Vol 550-553 ◽  
pp. 1687-1690
Author(s):  
Chen Sun ◽  
Wen Ju Liu ◽  
Hai Ming Zhang
Keyword(s):  
Polyethylene Glycol ◽  
Mass Fraction ◽  
Ph Value ◽  
Phase System ◽  
Phase Extraction ◽  
Two Phase ◽  
Aqueous Two Phase System ◽  
Result Show ◽  
A New Technique ◽  
Aqueous Two Phase Extraction

An aqueous two-phase system of polyethylene glycol (PEG)/(NH4)2SO4 with the behavior of forming aqueous two-phase and the distribution rules of potassium glycyrrhizinate in the aqueous two-phase system were studied. Effects of the molecular weight of PEG, the mass fraction of PEG and (NH4)2SO4, and pH value were investigated. The result show that when the mass fraction of PEG1000 was 50%, the mass fraction of (NH4)2SO4 was 5.7%, and pH value was 6.5, the highest extraction recovery of potassium glycyrrhizinate could reach 99.7%. This aqueous two-phase extraction may provide a new technique for separation of potassium glycyrrhizinate.

scholarly journals Purification and characterization of a collagenase from Penicillium sp. UCP 1286 by polyethylene glycol-phosphate aqueous two-phase system

2017 ◽  
Vol 133 ◽  
pp. 8-14 ◽  
Author(s):  
Maria Carolina de Albuquerque Wanderley ◽  
José Manoel Wanderley Duarte Neto ◽  
Wendell Wagner Campos Albuquerque ◽  
Daniela de Araújo Viana Marques ◽  
Carolina de Albuquerque Lima ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Phase System ◽  
Purification And Characterization ◽  
Two Phase ◽  
Aqueous Two Phase System ◽  
Penicillium Sp

Aqueous two-phase system (polyethylene glycol + ionic liquid) for extraction of α-amylase: phase diagrams, systems characterization and partition study

2020 ◽  
Vol 37 (3) ◽  
pp. 595-606
Author(s):  
O. R. R. Gandolfi ◽  
G. R. F. Gonçalves ◽  
I. C. Batista ◽  
R. C. I. Fontan ◽  
C. M. Veloso ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Polyethylene Glycol ◽  
Phase Diagrams ◽  
Phase System ◽  
Two Phase ◽  
Aqueous Two Phase System
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