2017
DOI: 10.1186/s13068-017-0842-9
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Efficient dehydration and recovery of ionic liquid after lignocellulosic processing using pervaporation

Abstract: BackgroundBiomass pretreatment using certain ionic liquids (ILs) is very efficient, generally producing a substrate that is amenable to saccharification with fermentable sugar yields approaching theoretical limits. Although promising, several challenges must be addressed before an IL pretreatment technology can become commercially viable. One of the most significant challenges is the affordable and scalable recovery and recycle of the IL itself. Pervaporation (PV) is a highly selective and scalable membrane se… Show more

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Cited by 82 publications
(52 citation statements)
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“…This can be accomplished by an electrodialysis system, as discussed in more detail in previous literature. 56,57 Following IL recovery, the jet fuel precursor is recovered through multiple distillations and a decantation system. The boiling points of all the jet fuel precursors considered in this study are above 175˚C, thus, the first distillation column separates the remaining water, jet fuel precursor, and other volatile compounds (such as acetic acid) from the remaining solids and other materials.…”
Section: Recovery and Separationmentioning
confidence: 99%
“…This can be accomplished by an electrodialysis system, as discussed in more detail in previous literature. 56,57 Following IL recovery, the jet fuel precursor is recovered through multiple distillations and a decantation system. The boiling points of all the jet fuel precursors considered in this study are above 175˚C, thus, the first distillation column separates the remaining water, jet fuel precursor, and other volatile compounds (such as acetic acid) from the remaining solids and other materials.…”
Section: Recovery and Separationmentioning
confidence: 99%
“…A number of promising techniques have now been demonstrated for high-yield recovery and reuse of ionic liquids from complex mixtures, including pervaporation, electrodialysis, and threephase separation via addition of kosmotropic salt solutions. [34][35][36] In the case of pervaporation, up to 99.9% recovery of 1-ethyl-3-methylimidazolium acetate was reported following pretreatment, with pretreatment effectiveness retained over five cycles of pretreatment and recovery. In the fully consolidated process, downstream processing would include density based solid-liquid-liquid separation to partition the organic phase, aqueous phase, and residual biomass, followed by IL recovery from the aqueous phase and recycling for subsequent rounds of pretreatment.…”
Section: Opportunities For Process Intensificationmentioning
confidence: 99%
“…169,170 The pervaporation has been attempted to separate ILs from mixtures. 171,172 The rst application of pervaporation for the selective removal of volatile substances from ILs was reported by Schäfer and coworkers. 171 They tested different hydrophilic and hydrophobic polymeric membranes, i.e., poly(octylmethyl-siloxane) (POMS), polyether block amide (PEBA) and poly(vinyl alcohol) (PVA) to recover volatile solutes from [C 4 During the MD process, a hydrophobic and porous membrane is applied.…”
Section: Membrane Separationmentioning
confidence: 99%