Phase Diagram, Densities, and the Refractive Index of New Aqueous Two-Phase System Formed by PEO1500+Thiosulfate + H2O at Different Temperatures

被引：19
作者：
Boggione Santos, Igor Jose [1 ]
Maduro de Carvalho, Raquel Moreira [1 ]
Hespanhol da Silva, Maria C. [1 ]
Mendes da Silva, Luis Henrique [1 ]
机构：
[1] Univ Fed Vicosa, Grp Quim Verde Coloidal & Macromol, Dept Quim, Ctr Ciencias Exatas, BR-36570000 Vicosa, MG, Brazil
来源：
JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2012年 / 57卷 / 02期
关键词：
SALT PLUS WATER; LIQUID-LIQUID EQUILIBRIA; TRIBLOCK COPOLYMER; DRIVING-FORCE; SULFATE SALTS; SEPARATION; EXTRACTION; BEHAVIOR; ANION; L35;
D O I：
10.1021/je200744s
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The present study includes measurements of the phase composition, density, and refractive index of aqueous two-phase systems of poly(ethylene oxide) 1500 (PEO1500) + sodium thiosulfate + H2O at (283.15, 298.15, and 313.15) K. With the experimental results obtained, phase diagrams were established, and the influence of temperature on the densities, binodal position, and refractive index values was analyzed and discussed. The experimental tie-lines were described using the Othmer-Tobias correlation. The experimental aqueous two-phase system data were correlated with the nonrandom two-liquid (NRTL) thermodynamic model for the activity coefficients; the results were considered excellent according to a global root-mean-square deviation of 0.97 %.
引用
收藏
页码：274 / 279
页数：6
相关论文
共 30 条
[1]   Equilibrium data for PEG 4000 plus salt plus water systems from (278.15 to 318.15) K [J].
Carvalho, Carolina P. ;
Coimbra, Jane Selia R. ;
Costa, Isabele Andressa F. ;
Minim, Luis Antonio ;
Silva, Luis Henrique M. ;
Maffia, Maria Cristina .
JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2007, 52 (02) :351-356
[2]   Liquid-Liquid Equilibrium in Aqueous Two-Phase (Water + PEG 8000+Salt): Experimental Determination and Thermodynamic Modeling [J].
Cunha, Evelyn V. C. ;
Aznar, Martin .
JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2009, 54 (12) :3242-3246
[3]   Equilibrium phase behavior of triblock copolymer plus salt plus water two-phase systems at different temperatures and pH [J].
da Silva, LHM ;
da Silva, MDH ;
Mesquita, AF ;
do Nascimento, KS ;
Coimbra, JSR ;
Minim, LA .
JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2005, 50 (04) :1457-1461
[4]   PEO-[M(CN)5NO]x- (M = Fe, Mn, or Cr) interaction as a driving force in the partitioning of the pentacyanonitrosylmetallate anion in ATPS:: Strong effect of the central atom [J].
da Silva, Luis Henrique M. ;
Hespanhol da Silva, Maria C. ;
Francisco, Kelly R. ;
Cardoso, Marcus V. C. ;
Minim, Luis A. ;
Coimbra, Jane S. R. .
JOURNAL OF PHYSICAL CHEMISTRY B, 2008, 112 (37) :11669-11678
[5]   Nitroprusside-PEO enthalpic interaction as a driving force for partitioning of the [Fe(CN)5NO]2- anion in aqueous two-phase systems formed by poly( ethylene oxide) and sulfate salts [J].
da Silva, Luis Henrique M. ;
da Silva, Maria C. Hespanhol ;
de Aquino, Roney A. N. ;
Francisco, Kelly R. ;
Cardoso, Marcus V. C. ;
Minim, Luis A. ;
Coimbra, Jane S. R. .
JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (46) :23540-23546
[6]   Phase Compositions of Aqueous Two-Phase Systems Formed by L35 and Salts at Different Temperatures [J].
de Lemos, Leandro Rodrigues ;
Boggione Santos, Igor Jose ;
Rodrigues, Guilherme Dias ;
Dias Ferreira, Gabriel Max ;
Mendes da Silva, Luis Henrique ;
Hespanhol da Silva, Maria do Carmo ;
Maduro de Carvalho, Raquel Moreira .
JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2010, 55 (03) :1193-1199
[7]   Density, refractive index, viscosity, and electrical conductivity in the Na2CO3 plus poly(ethylene glycol) plus H2O system from (293.15 to 308.15) K [J].
Graber, TA ;
Galleguillos, HR ;
Céspedes, C ;
Taboada, ME .
JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2004, 49 (05) :1254-1257
[8]   Specific separation of animal cells using aqueous two-phase systems [J].
Hamamoto, R ;
Kamihira, M ;
Iijima, S .
JOURNAL OF FERMENTATION AND BIOENGINEERING, 1996, 82 (01) :73-76
[9]  
Hespanhol Da Silva MD, 2006, QUIM NOVA, V29, P1332
[10]   Liquid-liquid equilibrium of aqueous mixture of triblock copolymers L35 and F68 with Na2SO4, Li2SO4, or MgSO4 [J].
Hespanhol da Silva, Maria do Carmo ;
Mendes da Silva, Luis Henrique ;
Amim Junior, Jorge ;
Guimaraes, Renata Oliveira ;
Martins, Joao Paulo .
JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2006, 51 (06) :2260-2264
123