Liquid–Liquid Equilibria of Some Aliphatic Alcohols + Disodium Hydrogen Citrate + Water Ternary Systems at 298.15 K

Nemati‐Kande, Ebrahim; Shekaari, Hemayat

doi:10.1007/s10953-012-9893-5

Cited by 16 publications

(11 citation statements)

References 34 publications

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“…Comparison between the studied binodal curves in this work and the ones reported for some aliphatic alcohols + disodium hydrogen citrate + water ATPSs at T = 298.15 K [26] was represented in Fig. 5.…”

Section: Effect Of Different Alcohols and Anions On The Phase Diagramsmentioning

confidence: 80%

“…Comparison between the binodal curves for alcohol (m) + sodium sulfite (ca1) + water (w) ATPSs studied in this work (solid line and filled symbols) and alcohol (m) + disodium hydrogen citrate (ca2) + water (w) (dashed lines and hollow symbols) ATPS's reported previously[26] at T = 298 15. K.{( ) 2-propanol + ca1 + w, ( ) 2-propanol + ca2 + w}; {( ) 1-propanol + ca1 + w, ( )1-propanol + ca2 + w}; {( ) 2-methyl-2-propanol + ca1 + w, ( ) 2-methyl-2-propanol + ca2 + w};{( ) 2-buthanol + ca1 + w}.3.5.2.1.…”

mentioning

confidence: 89%

“…The obtained LLE data in this work along with the ones reported previously for some other alcohol + water + salt systems [26][27][28][29] were fitted to Eqs. (2) and (3) to find a relation between the saltingout ability and k ca coefficient, and are reported in Tables 6 and 7, respectively.…”

Section: Study Of the Salting-out Effect Using Setschenow-type Equationsmentioning

confidence: 99%

“…Also, at previous works [26,33] we successfully used the e-NRTL [25] model to correlate the LLE of some alcohol + salt + water systems. However, in this work we decided to generalize the segment based Wilson model, which is a simpler model and has only six interaction parameters, to represent the LLE of the mixed-solvent electrolyte systems obtained in this work.…”

Section: Correlation Of the Tie-lines Datamentioning

confidence: 99%

“…Also, to study the effect of temperature on the phase separation ability of the studied systems the cloud point data as a function of alcohol mole fractions at T = 293.15-323.15 K with 5 K intervals was measured. Also, the use of the Setschenow-type equations to study the slating-out effect of the mentioned ATPSs along with some previously studied alcohol + salt + water systems [26][27][28][29][30][31][32][33] was discussed. Moreover, the modified segment based Wilson equation [23] was generalized to represent the mixed solvent electrolyte systems and the performance of this model in the correlation of the studied ATPSs was examined.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Liquid–liquid equilibrium of 1-propanol, 2-propanol, 2-methyl-2-propanol or 2-butanol+sodium sulfite+water aqueous two phase systems

Nemati‐Kande

Shekaari

Jafari

2012

Fluid Phase Equilibria

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Section: Effect Of Different Alcohols and Anions On The Phase Diagramsmentioning

confidence: 80%

mentioning

confidence: 89%

Section: Study Of the Salting-out Effect Using Setschenow-type Equationsmentioning

confidence: 99%

Section: Correlation Of the Tie-lines Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Liquid–liquid equilibrium of 1-propanol, 2-propanol, 2-methyl-2-propanol or 2-butanol+sodium sulfite+water aqueous two phase systems

Nemati‐Kande

Shekaari

Jafari

2012

Fluid Phase Equilibria

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Salts and 1‐propanol induced aqueous two‐phase systems: phase separation and application

Xie

2019

J of Chemical Tech & Biotech

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BACKGROUND: Today there is a resurgence of interest in using short-chain hydrophilic alcohols and salts to recover stronger polar bio-based chemicals and fuels for use as platform chemicals and renewable alternative transportation fuels. How to reduce the extractant depletion during the recovery of other bio-based chemicals from the fermentation broths is a problem of concern to researchers. RESULTS:The present work investigated a 1-propanol salt aqueous two-phase system and its application to recover bio-based acetoin. The water + 1-propanol + K 4 P 2 O 7 system was preferred for recovering bio-based acetoin according to the recovery of 1-propanol in the 1-propanol salt aqueous two-phase ternary system and after extraction of acetoin, and the salt content in the organic phase so as to avoid the losses of salt and 1-propanol.CONCLUSION: Subsequently, almost 100% of acetoin can be recovered from the aqueous solution; almost all of the salt was retained in the aqueous phase and more than 99% of 1-propanol was recovered.

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The Significant Influence of the pH Value on Citrate Coordination upon Modification of Superparamagnetic Iron Oxide Nanoparticles

Granath¹,

Mandel

Löbmann

2022

Part & Part Syst Charact

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Although citrates are commonly used to modify nanoparticles, attention is rarely paid to how the modification parameters affect the type of adsorption and, thus, possibly, the properties of the modified particles. The relevance of this and the significant impact it can have is demonstrated in this study by examining the effect of pH upon the modification of superparamagnetic iron oxide nanoparticles (SPIONs) with citrate, using a citrate concentration that yields a high molecular surface density but induces almost no coordination pressure. Relying first on a number of classical surfaces analyzing methods, no clear pH‐dependent differences can be identified. Finally, the consideration of the thermally induced redox behavior gives a decisive clue to unravel the “citric acid mystery” and to put together the, until then, weak hints into an overall picture. This shows that the citrate carboxyl groups are linked to the oxidic surface pH dependently via hydrogen bonds to hydroxide groups or coordinatively to iron ions and, besides, also interact, to a certain extent, with ammonia that is used for pH adjustment. With these findings, it is finally possible to explain the observed differences when the citrate‐modified SPIONs are coated with silica (SiO2) or redispersed after spray‐drying.

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Liquid–Liquid Equilibria of Some Aliphatic Alcohols + Disodium Hydrogen Citrate + Water Ternary Systems at 298.15 K

Cited by 16 publications

References 34 publications

Liquid–liquid equilibrium of 1-propanol, 2-propanol, 2-methyl-2-propanol or 2-butanol+sodium sulfite+water aqueous two phase systems

Liquid–liquid equilibrium of 1-propanol, 2-propanol, 2-methyl-2-propanol or 2-butanol+sodium sulfite+water aqueous two phase systems

Salts and 1‐propanol induced aqueous two‐phase systems: phase separation and application

The Significant Influence of the pH Value on Citrate Coordination upon Modification of Superparamagnetic Iron Oxide Nanoparticles

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