Equilibrium and Kinetics of the Extraction of Propionic Acid Using Tri‐<i>n</i>‐Octylphosphineoxide

Keshav, Amit; Wasewar, Kailas L.; Chand, Shri

doi:10.1002/ceat.200700490

Cited by 35 publications

(20 citation statements)

References 17 publications

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“…Much work on reactive extraction of propionic acid using different diluents like tri-n-octyl amine (TOA), Aliquat 336 and trioctyl phosphine oxide (TOPO) and TBP have been performed and are available in the literature [20][21][22][23]. However, no work could be found on the extraction of propionic acid using TBP in active diluents.…”

Section: Introductionmentioning

confidence: 98%

Recovery of propionic acid by reactive extraction - 1. Equilibrium, effect of pH and temperature, water coextraction

Keshav

Wasewar

Chand

2009

Desalination and Water Treatment

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Recovery of propionic acid by reactive extraction -1. Equilibrium, effect of pH and temperature, water coextraction, Desalination and Water Treatment, 3:1-3, 91-98, A B S T R A C TReactive extraction is a prominent technique for recovery of carboxylic acids for dilute aqueous stream and fermentation broth. In the present paper, the effect of acid concentration, extractant concentration and type of diluent on extraction of propionic acid using tri-n-butyl phosphate (TBP) in methyl isobutyl ketone and 1-decanol was studied. Physical and chemical extraction experiments were conducted to study the influence of TBP in the respective diluents. TBP + MIBK was found to be an effective system with more than 25% improvement in extraction in comparison to TBP + 1-decanol, where no significant effect was obtained. The difference in solvation of TBP:acid complexes in respective diluents was explained in terms of physical properties of the diluents. Effect of pH, temperature and water coextraction was also studied using TBP in MIBK. Higher acid extraction was found when solution pH was lower than 4. The effect of temperature was not so predominant at the ranges studied (305-333 K). This suggests that the TBP + MIBK system can advantageously be employed over wider temperature ranges found at different sources. Another advantage of the TBP + MIBK system was due to its lower water coextraction percentage values (<5).

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Section: Introductionmentioning

confidence: 98%

Recovery of propionic acid by reactive extraction - 1. Equilibrium, effect of pH and temperature, water coextraction

Keshav

Wasewar

Chand

2009

Desalination and Water Treatment

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“…Most of these studies are on the effect of diluents, extractants, acid concentrations and others on pH and salts. Tri-noctylphosphine oxide (TOPO) (Matsumoto et al, 1996;Hano et al, 1990;Keshav et al, 2008c), tri-n-butyl phosphate (TBP) (Kertes and King, 1986;Markl, 1981;Keshav et al, 2008a,b;Kumar et al, 2008, Harington andHossain, 2008), tri-noctylamine (TOA) (Wasewar and Pangarkar, 2006;Inci and Aydin, 2003;Jun et al, 2007;Ma et al, 2006;Yankov et al, 2005), Alamine 336 (Uslu, 2006;Uslu and Inci, 2007;Senol, 2002Senol, , 2006, and Aliquat 336 (Kyuchokov et al, 2004(Kyuchokov et al, , 2005Sarangi et al, 2006) are some of the widely used extractants employed for reactive extraction of carboxylic acids.…”

Section: Introductionmentioning

confidence: 99%

REACTIVE EXTRACTION OF PROPIONIC ACID USING TRI-n-OCTYLAMINE

Keshav

Wasewar

Chand

2009

Chemical Engineering Communications

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Reactive extraction of propionic acid using tri-n-octylamine (TOA) in 1-decanol and 2-octanol was studied. Physical and chemical extractions from aqueous solution of acid were presented. The extraction of propionic acid from aqueous solutions using TOA in 1-decanol and 2-octanol, respectively, resulted in a degree of extraction as high as 92%. The effect of temperature was studied and it was found that as the temperature was raised from 305 to 353 K, K E decreased from 30.11 to 11.85 and 19.44 to 10.23 in the case of 30 and 40% TOA, respectively, in 1-decanol and 28.57 to 11.32 and 21.99 to 8.70 in the case of 30 and 40% TOA, respectively, in 2-octanol. TOA in both diluents was found to be more effective at pH values less than 4. Increasing the pH from natural pH to 7 was found to severely affect the extraction. Different salts (NaCl, Na 2 SO 4 , K 2 HPO 4 ) and substrate sources (lactose and dextrose) were selected to study their effects on the reactive extraction of propionic acid. The presence of salts lowers the extraction, but substrate sources were found to have no effect on the extraction of propionic acid using TOA in either diluent. Six model solutions were prepared containing various concentrations of salts and substrate to get a real view of extraction. Extraction from the model solutions was lower than that observed in the aqueous solutions. However, the K Chemical D values are still high enough to have a sustainable extraction.

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“…The maximum extent to which the organic phase (TOA + 1-Octanol) could be loaded with the acid is known as the loading ratio (Z) [6,7,10,12,13,14].…”

Section: E% = (2)mentioning

confidence: 99%

“…) for the amount of the levulinic acid extracted through the diluent in the solvent mixture [7,12,14].…”

Section: E% = (2)mentioning

confidence: 99%

Reactive Extraction of Levulinic Acid using Tri-n-octylamine in 1-Octanol: Equilibria and Effect of pH

Meenakshi*,

Babu

2020

IJRTE

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Reactive extraction is a sophisticated separation technique used for the recovery of carboxylic acids from fermentation broth. Levulinic acid is a versatile chemical. A right combination of extractant and diluent will provide a high yield. The reactive extraction of levulinic acid from aqueous solution with tri-n-octylamine (TOA) dissolved in 1-octanol was investigated at room temperature. The effect of pH was studied. From the physical and chemical equilibrium experimental results, the distribution coefficient (KD), extraction efficiency (E%), loading ratio (Z), stoichiometric loading factor (ZS) and modified separation factor (Sf ) are calculated. It was found that physical extraction provided less yield compared to chemical extraction. A maximum KD was obtained as 5.248 using 40% TOA (0.9059 mol/L) while 83.99 % of the levulinic acid was extracted. By increasing the initial concentration of levulinic acid increased the concentration of levulinic acid in both the organic phase and aqueous phase. As the concentration of TOA increases from 10 to 40 % (0.2264 mol/L to 0.9059 mol/L), the distribution coefficient and extraction efficiency also increase. By increasing the pH from 3 to 7, the distribution coefficient and extraction efficiency were drastically affected.

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Equilibrium and Kinetics of the Extraction of Propionic Acid Using Tri‐n‐Octylphosphineoxide

Cited by 35 publications

References 17 publications

Recovery of propionic acid by reactive extraction - 1. Equilibrium, effect of pH and temperature, water coextraction

Recovery of propionic acid by reactive extraction - 1. Equilibrium, effect of pH and temperature, water coextraction

REACTIVE EXTRACTION OF PROPIONIC ACID USING TRI-n-OCTYLAMINE

Reactive Extraction of Levulinic Acid using Tri-n-octylamine in 1-Octanol: Equilibria and Effect of pH

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