Simultaneous Influence of Active and “Inert” Diluents on the Extraction of Lactic Acid by Means of Tri-<i>n</i>-octylamine (TOA) and Tri-<i>iso</i>-octylamine (TIOA)

Kyuchoukov, George; Labbaci, Abdallah; Albet, Joël; Molinier, J.

doi:10.1021/ie050912f

Cited by 36 publications

(39 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This process is further accelerated by the stripping action of the base (Na 2 CO 3 ). The data for pH 1 show that further decreases in pH result in a decrease in the extraction efficiency, as was also reported by Schöller et al (1993);and Kyuchoukov et al (2006). For pH 1, Schöller et al (1993) argued that the hydrochloric acid used to reduce the feed pH was possibly extracted in preference to lactate.…”

Section: Effect Of Feed Solution Phsupporting

confidence: 75%

See 1 more Smart Citation

The extraction of lactic acid by emulsion type of liquid membranes using alamine 336 in escaid 100

Yıldız

Tutkun

2011

Can J Chem Eng

View full text Add to dashboard Cite

The extraction of lactic acid from aqueous solutions through an emulsion liquid membrane containing Alamine 336 as carrier was investigated. The influence of mixing speed, diluent type, surfactant concentration, extractant concentration, feed solution pH, stripping concentration, phase ratio, and feed concentration were examined. Liquid membrane consists of a diluent (n-heptane, toluene, kerosene, Escaid 100, and Escaid 200), a surfactant (Span 80) and an extractant (Alamine 336), and Na 2 CO 3 were used as a stripping solution. It is possible to extract 91% of lactic acid from aqueous solutions using Alamine 336 in Escaid 100, as an extractant and a diluent respectively.

show abstract

Section: Effect Of Feed Solution Phsupporting

confidence: 75%

“…The role of diluent is not only to improve the physical properties of the extraction system, but it also removes the interaction product. This fact must be taken into account for the choice of diluent (Kyuchoukov et al, 2006). Some of the physical properties of the diluents are shown in Table 1.…”

Section: Effect Of Diluentmentioning

confidence: 99%

The extraction of lactic acid by emulsion type of liquid membranes using alamine 336 in escaid 100

Yıldız

Tutkun

2011

Can J Chem Eng

View full text Add to dashboard Cite

show abstract

“…The equilibrium experiments were carried out for extraction of 0.2M lactic acid with sunflower oil (as diluent) and Aliquat 336/TOA (as carriers). As shown in Figure 3 the distribution ratio decreased considerably with the increase in aqueous solution pH range 4−6 (26). The magnitude of the distribution ratio was greater with Aliquat 336 than for TOA at higher pH.…”

Section: Resultsmentioning

confidence: 86%

Effects of Organic Phase, Fermentation Media, and Operating Conditions on Lactic Acid Extraction

Hossain

Maisuria

2008

Biotechnology Progress

View full text Add to dashboard Cite

Lactic acid has extensive uses in the food, pharmaceutical, cosmetic and chemical industry. Lately, its use in producing biodegradable polymeric materials (polylactate) makes the production of lactic acid from fermentation broths very important. The major part of the production cost accounts for the cost of separation from very dilute reaction media where productivity is low as a result of the inhibitory nature of lactic acid. The current method of extraction/separation is both expensive and unsustainable. Therefore, there is great scope for development of alternative technology that will offer efficiency, economic, and environmental benefits. One of the promising technologies for recovery of lactic acid from fermentation broth is reactive liquid-liquid extraction. In this paper the extraction and recovery of lactic acid based on reactive processes is examined and the performance of a hydrophobic microporous hollow-fiber membrane module (HFMM) is evaluated. First, equilibrium experiments were conducted using organic solutions consisting of Aliquat 336/trioctylamine (as a carrier) and tri-butyl phosphate (TBP)/sunflower oil (as a solvent) The values of the distribution coefficient were obtained as a function of feed pH, composition of the organic phase (ratio of carrier to solvent), and temperature (range 8-40°C). The optimum extraction was obtained with the organic phase consisting of a mixture of 15 wt % tri-octylamine (TOA) and 15% Aliquat 336 and 70% solvent. The organic phase with TBP performed best but is less suitable because of its damaging properties (toxicity and environmental impact) and cost. Sunflower oil, which performed moderately, can be regarded as a better option as it has many desirable characteristics (nontoxic, environment-and operatorfriendly) and it costs much less. The percentage extraction was approximately 33% at pH 6 and at room temperature (can be enhanced by operating at higher temperatures) at a feed flow rate of 15-20 L/h. These results suggest that the hollow-fiber membrane process yields good percentage extraction at the fermentation conditions and its in situ application could improve the process productivity by suppressing the inhibitory effect of lactic acid.

show abstract

“…The values for extraction of 0.2M lactic acid with sunflower oil (as diluent) and Aliquat 336/TOA (as carriers) is shown in Figure 3. The distribution ratio decreased considerably with the increase in aqueous solution pH range 4-6 (Kyuchoukov, et al, 2006). The magnitude of the distribution ratio was greater with Aliquat 336 than for TOA at higher pH.…”

Section: Effect Of Organic Solventmentioning

confidence: 88%

Mass Transfer Investigation of Organic Acid Exatraction with Trioctylamine and Aliquat 336 Dissolved in Various Solvents

Hossain¹

2011

Mass Transfer in Multiphase Systems and Its Applications

View full text Add to dashboard Cite

Simultaneous Influence of Active and “Inert” Diluents on the Extraction of Lactic Acid by Means of Tri-n-octylamine (TOA) and Tri-iso-octylamine (TIOA)

Cited by 36 publications

References 29 publications

The extraction of lactic acid by emulsion type of liquid membranes using alamine 336 in escaid 100

The extraction of lactic acid by emulsion type of liquid membranes using alamine 336 in escaid 100

Effects of Organic Phase, Fermentation Media, and Operating Conditions on Lactic Acid Extraction

Mass Transfer Investigation of Organic Acid Exatraction with Trioctylamine and Aliquat 336 Dissolved in Various Solvents

Contact Info

Product

Resources

About