Extractive pervaporation to separate ethanol from its dilute aqueous solutions characteristic of ethanol-producing fermentation processes

Separation Performance and Stability of PVDF-co-HFP/Alkylphosphonium Dicyanamide Ionic Liquid Gel-Based Membrane in Pervaporative Separation of 1-Butanol

“…The 80 h maximum operational lifetime shown by the composite membrane is not comparable to the 3-5 months shown by other pervaporation membranes reported (42,43), though it already represents encouraging progress beyond the 10 h shown by a simple SILM configuration (data not shown). These results also show that the unique advantages offered by separation using liquid extractant-based membranes (i.e., SILMs) are potentially attainable using semi-solid gel systems.…”

Review on Pervaporation: Theory, Membrane Performance, and Application to Intensification of Esterification Reaction

“…Thongsukmak and Sirkar [75] studied alcohol-water separation for feed alcohol concentrations of 5-10% in the presence of a small amount of n-butanol in the feed varying between 0.5 and 2.5 wt% over a feed temperature range of 30-54 ∘ C. In single organic solvent species in solution, three feed concentration levels, the values for 1.5, 5, and 10 wt% were taken. As the temperature was increased from 25 to 54 ∘ C, the n-butanol-water selectivity went up from 60 to as high as 162 at 54 ∘ C; the permeant mass flux of n-butanol reached 11.0 g/(m 2 h) at 54 ∘ C (for a n-butanol wt% of 1.5 in feed).…”

Partitioning of butanol and other fermentation broth components in phosphonium and ammonium-based ionic liquids and their toxicity to solventogenic clostridia

“…In this work, the tested RTILs were miscible with one another but were immiscible with other extractants like tri-n-octylamine and polymeric liquids like poly(dimethylsiloxane), poly(octylmethylsiloxane) and poly(phenylmethylsiloxane). Interest on these compounds is due to their use as liquid membrane extractants [32,33]. For the chosen diluent OA, all RTILs have good miscibilities.…”