6 research outputs found
Experimental determination and modeling liquid-liquid equilibria of multicomponent systems of green solvents
U ovom radu eksperimentalno su određene rastvorljivosti binarnih i pseudo-binarnih smeša,
odnosno termodinamičke ravnoteže tečno-tečno, kao i uticaj dodavanja različitih ko-rastvarača na
pomeranje fazne ravnoteže, na atmosferskom pritisku i u temperaturnom intervalu od 293.15 K do
393.15 K. Svi dobijeni rezultati prikazani su grafički, formiranjem faznih dijagrama temperaturasastav.
Pored toga, za obradu eksperimentalnih podataka, razvijen je program na bazi NRTL,
UNIFAC i UNIQUAC modela, sa više temeraturno nezavisnih i zavisnih formi. Program je testiran
na velikom broju literaturnih podataka, a zatim i na eksperimentalnim podacima za dva binarna
sistema. Za termodinamičku analizu u ovoj doktorskoj disertaciji odabrani su sistemi koji sadrže
industrijski važne komponente: nikotin, anilin i N,N-dimetilanilin, kao i ekološki značajne
komponente i njihove vodene rastvore kao što su poli (etilen glikoli), jonske tečnosti, glicerol, etillaktat
i različite neorganske soli.
Kod grupe pseudo-binarnih sistema koje sadrže nikotin u kombinaciji sa etil-laktatom ili
poli (etilen glikolom) utvrđeno je da dodatak EKOENG-a povećava oblast nerastvorljivosti, tj. da
jonska tečnost pokazuje veoma dobre efekte kao anti-rastvarač. Kod grupe sistema koje sadrže
nikotin u kombinaciji sa vodenim rastvorima soli utvrđeno je da dodatak tih soli ima veliki uticaj na
termodinamičku ravnotežu tečno-tečno što se vidi povećanjem oblasti nerastvorljivosti u odnosu na
binarnu smešu nikotin + voda. Sve soli pokazale su određene “salting-out” efekte, a jedino jonska
tečnost, EKOENG, pri malim udelima “salting-in”, a sa povećanjem udela i “salting-out” efekte.
Kod poslednje grupe sistema koje sadrže anilin i N,N-dimetilanilin utvrđeno je da je N,Ndimetilanilin
manje rastvoran u vodi u odnosu na anilin, zbog hidrofobne dimetilamino grupe
vezane za fenil grupu. Dodatak poli (etilen glikola) kao ko-rastvarača dovodi povećanja
rastvorljivosti i anilina i N,N-dimetilanilina.
Rezultati koji su dobijeni primenom NRTL modela na velikom broju literaturnih podataka,
kao i na dva binarna sistema eksperimentalno određena u ovom radu, ukazuju na mogućnost veomaIn this disertation, experimentally are determined solubilities for binary and pseudo-binary
systems, as for thermodynamic liquid-liquid equilibria, and effects of adding different co-solvents
on phase equilibria shifting, at atmospheric pressure and temperatures from 293.15 K to 393.15 K.
All obtained results are represented graphically, on temperature-mole fraction phase diagrams. For
experimental data modelling, program based on NRTL, UNIFAC and UNIQUAC models is
developed, with several temperature dependant and independant forms. Program is tested on large
number of literature data, and also applied on experimental data for two binary systems. Systems
containing industry important components: nicotine, N,N-dimethylaniline, and ecologically
important components and their water solutions as poly (ethylene glycol), ionic liquids, glycerol,
etil-lactate and different inorganic salts are choosen for thermodynamic analysis.
It is determined that adding ionic liquid ECOENG in group of pseudo-binary systems
containing nicotine in combination with etil-lactate or poly (ethylene glycol), lead to increasing
insolubility regions, i.e. ionic liquid shows very good anti-solvent properties. Addition of salts in
nicotine + water systems have large impact on thermodinamic liquid-liquid equilibrium, as can be
seen in increased insolubility regions comparing to binary system nicotine + water. All salts showed
salting-out effects, and only ionic liquid ECOENG showed salting-in effect first, and then with
mole fraction increasing, salting-out effects. In last group of systems containing N,Ndimethylaniline
it was determined that N,N-dimethylaniline is less soluble in water then aniline,
because of hydrophobic dimetilamino group attached to phenil group. Addition of poly (ethylene
glycol) as co-solvent lead to incresed solubility both aniline and N,N-dimethylaniline.
Obtained results with NRTL model application on large number of literature data, and also
on two binary systems experimentally determined in this disertation, shows possibility of successfu
Experimental determination and modeling liquid-liquid equilibria of multicomponent systems of green solvents
U ovom radu eksperimentalno su određene rastvorljivosti binarnih i pseudo-binarnih smeša,
odnosno termodinamičke ravnoteže tečno-tečno, kao i uticaj dodavanja različitih ko-rastvarača na
pomeranje fazne ravnoteže, na atmosferskom pritisku i u temperaturnom intervalu od 293.15 K do
393.15 K. Svi dobijeni rezultati prikazani su grafički, formiranjem faznih dijagrama temperaturasastav.
Pored toga, za obradu eksperimentalnih podataka, razvijen je program na bazi NRTL,
UNIFAC i UNIQUAC modela, sa više temeraturno nezavisnih i zavisnih formi. Program je testiran
na velikom broju literaturnih podataka, a zatim i na eksperimentalnim podacima za dva binarna
sistema. Za termodinamičku analizu u ovoj doktorskoj disertaciji odabrani su sistemi koji sadrže
industrijski važne komponente: nikotin, anilin i N,N-dimetilanilin, kao i ekološki značajne
komponente i njihove vodene rastvore kao što su poli (etilen glikoli), jonske tečnosti, glicerol, etillaktat
i različite neorganske soli.
Kod grupe pseudo-binarnih sistema koje sadrže nikotin u kombinaciji sa etil-laktatom ili
poli (etilen glikolom) utvrđeno je da dodatak EKOENG-a povećava oblast nerastvorljivosti, tj. da
jonska tečnost pokazuje veoma dobre efekte kao anti-rastvarač. Kod grupe sistema koje sadrže
nikotin u kombinaciji sa vodenim rastvorima soli utvrđeno je da dodatak tih soli ima veliki uticaj na
termodinamičku ravnotežu tečno-tečno što se vidi povećanjem oblasti nerastvorljivosti u odnosu na
binarnu smešu nikotin + voda. Sve soli pokazale su određene “salting-out” efekte, a jedino jonska
tečnost, EKOENG, pri malim udelima “salting-in”, a sa povećanjem udela i “salting-out” efekte.
Kod poslednje grupe sistema koje sadrže anilin i N,N-dimetilanilin utvrđeno je da je N,Ndimetilanilin
manje rastvoran u vodi u odnosu na anilin, zbog hidrofobne dimetilamino grupe
vezane za fenil grupu. Dodatak poli (etilen glikola) kao ko-rastvarača dovodi povećanja
rastvorljivosti i anilina i N,N-dimetilanilina.
Rezultati koji su dobijeni primenom NRTL modela na velikom broju literaturnih podataka,
kao i na dva binarna sistema eksperimentalno određena u ovom radu, ukazuju na mogućnost veomaIn this disertation, experimentally are determined solubilities for binary and pseudo-binary
systems, as for thermodynamic liquid-liquid equilibria, and effects of adding different co-solvents
on phase equilibria shifting, at atmospheric pressure and temperatures from 293.15 K to 393.15 K.
All obtained results are represented graphically, on temperature-mole fraction phase diagrams. For
experimental data modelling, program based on NRTL, UNIFAC and UNIQUAC models is
developed, with several temperature dependant and independant forms. Program is tested on large
number of literature data, and also applied on experimental data for two binary systems. Systems
containing industry important components: nicotine, N,N-dimethylaniline, and ecologically
important components and their water solutions as poly (ethylene glycol), ionic liquids, glycerol,
etil-lactate and different inorganic salts are choosen for thermodynamic analysis.
It is determined that adding ionic liquid ECOENG in group of pseudo-binary systems
containing nicotine in combination with etil-lactate or poly (ethylene glycol), lead to increasing
insolubility regions, i.e. ionic liquid shows very good anti-solvent properties. Addition of salts in
nicotine + water systems have large impact on thermodinamic liquid-liquid equilibrium, as can be
seen in increased insolubility regions comparing to binary system nicotine + water. All salts showed
salting-out effects, and only ionic liquid ECOENG showed salting-in effect first, and then with
mole fraction increasing, salting-out effects. In last group of systems containing N,Ndimethylaniline
it was determined that N,N-dimethylaniline is less soluble in water then aniline,
because of hydrophobic dimetilamino group attached to phenil group. Addition of poly (ethylene
glycol) as co-solvent lead to incresed solubility both aniline and N,N-dimethylaniline.
Obtained results with NRTL model application on large number of literature data, and also
on two binary systems experimentally determined in this disertation, shows possibility of successfu
Experimental determination and modeling liquid-liquid equilibria of multicomponent systems of green solvents
U ovom radu eksperimentalno su određene rastvorljivosti binarnih i pseudo-binarnih smeša,
odnosno termodinamičke ravnoteže tečno-tečno, kao i uticaj dodavanja različitih ko-rastvarača na
pomeranje fazne ravnoteže, na atmosferskom pritisku i u temperaturnom intervalu od 293.15 K do
393.15 K. Svi dobijeni rezultati prikazani su grafički, formiranjem faznih dijagrama temperaturasastav.
Pored toga, za obradu eksperimentalnih podataka, razvijen je program na bazi NRTL,
UNIFAC i UNIQUAC modela, sa više temeraturno nezavisnih i zavisnih formi. Program je testiran
na velikom broju literaturnih podataka, a zatim i na eksperimentalnim podacima za dva binarna
sistema. Za termodinamičku analizu u ovoj doktorskoj disertaciji odabrani su sistemi koji sadrže
industrijski važne komponente: nikotin, anilin i N,N-dimetilanilin, kao i ekološki značajne
komponente i njihove vodene rastvore kao što su poli (etilen glikoli), jonske tečnosti, glicerol, etillaktat
i različite neorganske soli.
Kod grupe pseudo-binarnih sistema koje sadrže nikotin u kombinaciji sa etil-laktatom ili
poli (etilen glikolom) utvrđeno je da dodatak EKOENG-a povećava oblast nerastvorljivosti, tj. da
jonska tečnost pokazuje veoma dobre efekte kao anti-rastvarač. Kod grupe sistema koje sadrže
nikotin u kombinaciji sa vodenim rastvorima soli utvrđeno je da dodatak tih soli ima veliki uticaj na
termodinamičku ravnotežu tečno-tečno što se vidi povećanjem oblasti nerastvorljivosti u odnosu na
binarnu smešu nikotin + voda. Sve soli pokazale su određene “salting-out” efekte, a jedino jonska
tečnost, EKOENG, pri malim udelima “salting-in”, a sa povećanjem udela i “salting-out” efekte.
Kod poslednje grupe sistema koje sadrže anilin i N,N-dimetilanilin utvrđeno je da je N,Ndimetilanilin
manje rastvoran u vodi u odnosu na anilin, zbog hidrofobne dimetilamino grupe
vezane za fenil grupu. Dodatak poli (etilen glikola) kao ko-rastvarača dovodi povećanja
rastvorljivosti i anilina i N,N-dimetilanilina.
Rezultati koji su dobijeni primenom NRTL modela na velikom broju literaturnih podataka,
kao i na dva binarna sistema eksperimentalno određena u ovom radu, ukazuju na mogućnost veomaIn this disertation, experimentally are determined solubilities for binary and pseudo-binary
systems, as for thermodynamic liquid-liquid equilibria, and effects of adding different co-solvents
on phase equilibria shifting, at atmospheric pressure and temperatures from 293.15 K to 393.15 K.
All obtained results are represented graphically, on temperature-mole fraction phase diagrams. For
experimental data modelling, program based on NRTL, UNIFAC and UNIQUAC models is
developed, with several temperature dependant and independant forms. Program is tested on large
number of literature data, and also applied on experimental data for two binary systems. Systems
containing industry important components: nicotine, N,N-dimethylaniline, and ecologically
important components and their water solutions as poly (ethylene glycol), ionic liquids, glycerol,
etil-lactate and different inorganic salts are choosen for thermodynamic analysis.
It is determined that adding ionic liquid ECOENG in group of pseudo-binary systems
containing nicotine in combination with etil-lactate or poly (ethylene glycol), lead to increasing
insolubility regions, i.e. ionic liquid shows very good anti-solvent properties. Addition of salts in
nicotine + water systems have large impact on thermodinamic liquid-liquid equilibrium, as can be
seen in increased insolubility regions comparing to binary system nicotine + water. All salts showed
salting-out effects, and only ionic liquid ECOENG showed salting-in effect first, and then with
mole fraction increasing, salting-out effects. In last group of systems containing N,Ndimethylaniline
it was determined that N,N-dimethylaniline is less soluble in water then aniline,
because of hydrophobic dimetilamino group attached to phenil group. Addition of poly (ethylene
glycol) as co-solvent lead to incresed solubility both aniline and N,N-dimethylaniline.
Obtained results with NRTL model application on large number of literature data, and also
on two binary systems experimentally determined in this disertation, shows possibility of successfu
A new group contribution model for prediction liquid hydrocarbon viscosity based on free-volume theory
In this paper a group contribution model for predicting the viscosity values of n-alkanes and iso-alkanes in the liquid phase based on Free-Volume Theory was developed. A database with 2129 experimental data with a temperature range up to 573.15 K and a pressure range up to 4000 bar was used to develop the model. The total weighted average percentage error is 4.894%. The model was tested on the next 472 experimental data with a temperature range up to 564.15 K and a pressure range up to 2019 bar and a mean percentage error that was obtained is 5.155%
Prediction of excess molar volumes of binary mixtures by Prigogine-Flory-Patterson (PFP) and extended real association solution (ERAS) models
In this paper, the Prigogine-Flory-Patterson (PFP) theoretical model and the extended real association solution (ERAS) model for the prediction of the excess molar volumes of 17 binary sets of alcohols (methanol, ethanol, propan-1-ol, butan-1-ol, butan-2-ol and pentan-1-ol) with benzene, chlorobenzene, acetonitrile, hexan-1-amine and n-heptane were tested at 298.15 K and atmospheric pressure. The binary sets contained 333 experimental data points for 11 different compounds. The ERAS model demonstrated better correlative characteristics for binary mixtures comparing to PFP model. The ERAS model is successfully applied on all binary systems except ethanol + benzene and propan- 1-ol + benzene. PFP model gave less satisfactory results for all systems except butan-1-ol + hexan-1-amine, for which obtained results were acceptable
Volumetric and Transport Properties of Isoamyl Acetate Based Binary Systems-Experimental Determination and Modeling
Three binary mixtures consisting of isoamyl acetate and 1-butanol or isobutanol or isopentanol were experimentally investigated in terms of their density, viscosity refractive index, and ultrasonic speed of sound, in the temperature range from 288.15 to 323.15 K and at atmospheric pressure. The choice of mixtures was based on their potential for practical application. From experimental data, excess molar volume, viscosity deviation, excess molar Gibbs free energy of activation of viscous flow, deviation in refractive index, and deviation in isentropic compressibility are calculated, correlated with the Redlich-Kister equation and used for better understanding of molecular interactions between the mixture components. Also, partial molar volumes, excess partial molar volumes, and partial molar volumes at infinite dilutions were calculated to elucidate the nonideal behavior of the investigated mixtures. Since the mixtures were investigated both from the theoretical point of view and with the aspect for practical application, the modeling of two key properties, viscosity and excess molar volume, was performed with different models and approaches, and the results are compared with experimental values