Continuous multi-stage extraction of n-butanol from aqueous solutions with 1-hexyl-3-methylimidazolium tetracyanoborate

Stoffers, Martin; Górak, Andrzej

doi:10.1016/j.seppur.2013.10.016

Cited by 35 publications

(18 citation statements)

References 38 publications

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“…To solve these problems, the alternative nitrogen sources are used to replace YE. Product removal has been proposed to alleviate butanol toxicity using a number of alternative techniques, e.g., pervaporation [13,14], gas stripping [15][16][17][18][19], adsorption [20,21] and liquid-liquid extraction [22]. Among these techniques, gas stripping has been found to be particularly promising.…”

Section: Introductionmentioning

confidence: 99%

Impacts of Initial Sugar, Nitrogen and Calcium Carbonate on Butanol Fermentation from Sugarcane Molasses by Clostridium beijerinckii

et al. 2020

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Low-cost nitrogen sources, i.e., dried spent yeast (DSY), rice bran (RB), soybean meal (SM), urea and ammonium sulfate were used for batch butanol fermentation from sugarcane molasses by Clostridium beijerinckii TISTR 1461 under anaerobic conditions. Among these five low-cost nitrogen sources, DSY at 1.53 g/L (nitrogen content equal to that of 1 g/L of yeast extract) was found to be the most suitable. At an initial sugar level of 60 g/L, the maximum butanol concentration (PB), productivity (QB) and yield (YB/S) were 11.19 g/L, 0.23 g/L·h and 0.31 g/g, respectively. To improve the butanol production, the concentrations of initial sugar, DSY and calcium carbonate were varied using response surface methodology (RSM) based on Box–Behnken design. It was found that the optimal conditions for high butanol production were initial sugar, 50 g/L; DSY, 6 g/L and calcium carbonate, 6.6 g/L. Under these conditions, the highest experimental PB, QB and YB/S values were 11.38 g/L, 0.32 g/L·h and 0.40 g/g, respectively with 50% sugar consumption (SC). The PB with neither DSY nor CaCO3 was only 8.53 g/L. When an in situ gas stripping system was connected to the fermenter to remove butanol produced during the fermentation, the PB was increased to 15.33 g/L, whereas the YB/S (0.39 g/g) was not changed. However, the QB was decreased to 0.21 g/L·h with 75% SC.

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Section: Introductionmentioning

confidence: 99%

Impacts of Initial Sugar, Nitrogen and Calcium Carbonate on Butanol Fermentation from Sugarcane Molasses by Clostridium beijerinckii

et al. 2020

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“…The efficient extraction of bio-butanol has been demonstrated using imidazolium 15 and phosphonium 16 ionic liquids, and the optimisation of 1,3-propanediol extraction is ongoing in several research groups, including Marr and co-workers (X. Liu et al unpublished work). Varying the class of cation or anion, and even the functionality for a given ionic liquid type, changes the properties of extraction markedly.…”

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confidence: 99%

Combining bio- and chemo-catalysis for the conversion of bio-renewable alcohols: homogeneous iridium catalysed hydrogen transfer initiated dehydration of 1,3-propanediol to aldehydes

et al. 2016

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Abstract.Combining whole cell biocatalysis and chemocatalysis in a single reaction sequence avoids unnecessary separations, and the associated waste and energy consumption. Bacterial fermentation has been employed to convert waste glycerol from biodiesel production into 1,3-propanediol. This 1,3-propanediol can be extracted selectively from the aqueous fermentation broth using ionic liquids. 1,3-propanediol in ionic liquid solution was converted to propionaldehyde by hydrogen transfer initiated dehydration (HTID) catalysed by a Cp*IrCl 2 (NHC) (Cp* = pentamethylcyclopentadienyl; NHC = carbene ligand) complex. The use of an ionic liquid solvent enabled the reaction to be performed under reduced pressure, facilitating the isolation of the product, and improving the reaction selectivity. The Ir(III) catalyst in ionic liquid was found to be highly recyclable.Introduction.

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“…Coupling ionic liquids with carbon dioxide further decreases the viscosity of the liquid phase, improving diffusivity and mass transfer of compounds [15,16], an important factor in the case of the highly viscous 1,4butanediol [17]. In our approach we explore the hydrophobic nature of a particular ionic liquid, 1hexyl-3-methylimidazolium tetracyanoborate [18,19], and investigate its feasibility to remove water from the liquid reaction mixture into the dense carbon dioxide phase, shifting the reaction equilibrium towards the product formation. This study is part of an on-going project in our laboratory and comprises the measurement of vapour-liquid equilibria of multicomponent systems under high carbon dioxide pressures, up to 18MPa, and temperature of 313.2 K. The authors followed the technical evaluation of the process with an economic and sensitivity analysis and concluded that the process is always profitable provided the ethyl levulinate remains slightly more expensive than the 1,4-butanediol.…”

Section: Introductionmentioning

confidence: 99%

High-Pressure Phase Equilibrium Studies of Multicomponent (Alcohol-Water-Ionic Liquid-CO2) Systems

Zakrzewska

Paninho

Silva

et al. 2020

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Selective water (by-product) separation from reaction mixtures stands as an important process intensification strategy for equilibrium-limited reactions. In this work, the possibility of using a high-pressure biphasic reaction media composed of a hydrophobic ionic liquid, 1-hexy-3-methylimidazolium tetracyanoborate, and carbon dioxide was explored for levulinic acid production from 1,4-butanediol. Vapour-liquid equilibrium measurements were performed for the binary (diol+CO2), ternary (diol+CO2+IL), and quaternary systems (diol+CO2+IL+water), at 313.2 K and pressures up to 18 MPa. The static analytical method was used in a high-pressure phase equilibrium apparatus equipped with a visual sapphire cell. The capability of the quaternary system to perform physical water separation is discussed in this paper.

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Continuous multi-stage extraction of n-butanol from aqueous solutions with 1-hexyl-3-methylimidazolium tetracyanoborate

Cited by 35 publications

References 38 publications

Impacts of Initial Sugar, Nitrogen and Calcium Carbonate on Butanol Fermentation from Sugarcane Molasses by Clostridium beijerinckii

Impacts of Initial Sugar, Nitrogen and Calcium Carbonate on Butanol Fermentation from Sugarcane Molasses by Clostridium beijerinckii

Combining bio- and chemo-catalysis for the conversion of bio-renewable alcohols: homogeneous iridium catalysed hydrogen transfer initiated dehydration of 1,3-propanediol to aldehydes

High-Pressure Phase Equilibrium Studies of Multicomponent (Alcohol-Water-Ionic Liquid-CO2) Systems

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