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

Yıldız, Yasemin; Tutkun, Osman

doi:10.1002/cjce.20501

Cited by 27 publications

(10 citation statements)

References 41 publications

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“…Vacuum membrane distillation has also been reported to decrease the concentration of acetic acid and furfural in the corn stover hydrolysate . Although liquid–liquid extraction is the most efficient approach and has a prior history of use including acetic acid from aqueous solutions; toxicity of the solvent itself can result in potential limitations . Amine and phosphine based solvents with different diluents and trioctylphosphine oxide (TOPO) are effective in extracting acetic acid from hydrolysates .…”

Section: Introductionmentioning

confidence: 99%

“…17 Although liquid-liquid extraction is the most efficient approach and has a prior history of use including acetic acid from aqueous solutions; toxicity of the solvent itself can result in potential limitations. [18][19][20][21] Amine and phosphine based solvents with different diluents [22][23][24][25][26] and trioctylphosphine oxide (TOPO) are effective in extracting acetic acid from hydrolysates. 23 The better performing solvents, based on the measured partition coefficients of inhibitors in various organic solvents, were not biocompatible with the fermentation microorganisms.…”

Section: Introductionmentioning

confidence: 99%

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Acetic acid removal from corn stover hydrolysate using ethyl acetate and the impact on Saccharomyces cerevisiae bioethanol fermentation

Aghazadeh

Ladisch

Engelberth

2016

Biotechnology Progress

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Acetic acid is introduced into cellulose conversion processes as a consequence of composition of lignocellulose feedstocks, causing significant inhibition of adapted, genetically modified and wild-type S. cerevisiae in bioethanol fermentation. While adaptation or modification of yeast may reduce inhibition, the most effective approach is to remove the acetic acid prior to fermentation. This work addresses liquid-liquid extraction of acetic acid from biomass hydrolysate through a pathway that mitigates acetic acid inhibition while avoiding the negative effects of the extractant, which itself may exhibit inhibition. Candidate solvents were selected using simulation results from Aspen Plus™, based on their ability to extract acetic acid which was confirmed by experimentation. All solvents showed varying degrees of toxicity toward yeast, but the relative volatility of ethyl acetate enabled its use as simple vacuum evaporation could reduce small concentrations of aqueous ethyl acetate to minimally inhibitory levels. The toxicity threshold of ethyl acetate, in the presence of acetic acid, was found to be 10 g L(-1) . The fermentation was enhanced by extracting 90% of the acetic acid using ethyl acetate, followed by vacuum evaporation to remove 88% removal of residual ethyl acetate along with 10% of the broth. NRRL Y-1546 yeast was used to demonstrate a 13% increase in concentration, 14% in ethanol specific production rate, and 11% ethanol yield. This study demonstrated that extraction of acetic acid with ethyl acetate followed by evaporative removal of ethyl acetate from the raffinate phase has potential to significantly enhance ethanol fermentation in a corn stover bioethanol facility. © 2016 American Institute of Chemical Engineers Biotechnol. Prog., 32:929-937, 2016.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Acetic acid removal from corn stover hydrolysate using ethyl acetate and the impact on Saccharomyces cerevisiae bioethanol fermentation

Aghazadeh

Ladisch

Engelberth

2016

Biotechnology Progress

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“…Stability of ELMs may be improved by increasing the concentration of surfactants [82], increasing the concentration of the extractant which results in the increase in membrane viscosity [83], the use of membrane diluent with high viscosity [84] and the use of non-Newtonian modifiers for the membrane phase. The last point has not received much attention in the research literature and previous review articles and will thus be a major part of this section of the current mini-review.…”

Section: The Proposed Solutions Of Membrane Instabilitymentioning

confidence: 99%

Mini-Review on the Use of Liquid Membranes in the Extraction of Platinum Group Metals from Mining and Metal Refinery Wastewaters/Side-Streams

Moyo¹

2014

J Bioremed Biodeg

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The current mini-review focuses on the use of liquid membranes in the platinum group metal (PGM/PGMs) extraction from various types of wastewaters to prevent environmental pollution; and for the metal recovery to address the scarcity of the PGMs in the industrial cycles. The bulk liquid membranes have been used to the extracted PGMs from the (acidic) aqueous media with recoveries of up to 96.3 ± 2.5% of the original PGM amount. The extraction time generally ranges from 2 to 24 hours. The bulk membrane liquid in the PGM extraction will depend on the covalent structure of the extractant, the feed phase PGM concentration and the complex of the PGM in question that is actually extracted from the aqueous environment. The advantages of this type of liquid membrane include its operational simplicity, but the disadvantages include limited possibility to improve the extraction performance of the system. Literature data are encouraging as they indicate that extraction of PGMs from mining and metal-refinery side-streams does not suffer from interference from metal contaminants that are commonly found in the mining and metal refinery side-streams, e.g. iron. Thus further research should focus on the application of ELM to extraction of PGMs from said wastewaters and major research drive should focus on the use of the Taylorvortex column and the non-Newtonian ELMs. With the supported liquid membranes, 78-82% of the original PGM content could be recovered from model side-streams. The selectivity of the extraction for individual PGMs can be controlled by the extractant used.Palladium is the most studied PGM with respect to extraction from wastewater using the LM technology. Extractants that have been used in this regard include di-2-ethylhexyl-thiophosphoric acid [8], 8quinolone derivatives [9] and Cyanex 471 [10]. Various arrangements of the LM have been used, e.g. the ELM with LIX 984N-C as the extractant [11]. The SLMs have been used to extract various PGMs from wastewater using the following extractants: Aliquat 336 for Pt (IV) [12], Pd (II) [13] and Rh (III) [14]; and MSP-8 for Pd(II) [15]. Quantitative extraction is generally achieved within 2 to 24 hours [16].Stripping phases generally contain HCl or HNO 3 and sometimes this is supplemented by thiourea [17]. The current mini-review focuses on the use of LMs in the PGM extraction from various types of wastewaters. The article will cover the metal removal from the mining and metal-refinery side-streams, wastewaters from battery production and other potential sources of environmental pollution; and metal recovery to address the scarcity of the PGMs in the industrial cycles.

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“…Mainly, the polymers produced contain unhydrolyzable glucose or dextrin-like polymers: 1, 6-α-glycans, polyurethanes, polyfunctional epoxide resins, and non-ionic surfactants. Specifically, levoglucosan has found use as a glycosyl donor in polysaccharide construction [15,53]. It is also found in a complex ligand attached to platinum metal, "DIOXOP," which is a leukemia inhibiting agent and growth promoting substance for (+)-Biotin and Vitamin H. Levoglucosan also makes appearances in macrolide antibiotics: nonesin, rosaramycin, and rifamycin [15].…”

Section: Utilization Of Levoglucosanmentioning

confidence: 99%

“…Polyphenols were separated from cocoa seeds using membranes by Sarmento et al[50]. Han et al[51] used an anion exchange membrane and found that it exhibited better performance that ion exchange resin.A microporous polypropylene substrate with a sodium alginate active layer was able to separate 80% acetic acid aqueous solution at 50°C by Zhang et al[52].Manzak and Sonmezoglu used an emulsion type liquid membrane, a surfactant, a carrier, and a sodium carbonate additive; 86% of the total acetic acid in a solution was able to be separated in ten minutes[53]. Teella et al[54] utilized a reverse osmosis membrane and nanofiltration to separate acetic acid.…”

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confidence: 99%

Recovering valuable products from the aqueous streams of fast pyrolysis

Hall

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Productive use of all streams of fractionated bio-oil will be important to the development of a biorefinery based on the fast pyrolysis of biomass. Fractionation technology separates bio-oil into water soluble sugars, water insoluble phenolic monomers, dimers, and oligomers, and aqueous phases containing water soluble, light oxygenates. The major species in our first two stage fractions are water soluble sugars

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

Cited by 27 publications

References 41 publications

Acetic acid removal from corn stover hydrolysate using ethyl acetate and the impact on Saccharomyces cerevisiae bioethanol fermentation

Acetic acid removal from corn stover hydrolysate using ethyl acetate and the impact on Saccharomyces cerevisiae bioethanol fermentation

Mini-Review on the Use of Liquid Membranes in the Extraction of Platinum Group Metals from Mining and Metal Refinery Wastewaters/Side-Streams

Recovering valuable products from the aqueous streams of fast pyrolysis

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