Negative impact of butyric acid on butanol recovery by pervaporation with a silicalite-1 membrane from ABE fermentation

Sandwich Structure Membrane with Enhanced Anti-Swelling Property and Mechanical Strength for Bioethanol Separation by Pervaporation

“…9−11 For this dual-layer composite structure, the selective layer is directly exposed to the fermentation broth with complex chemical, physical, and biological features. 12,13 Thus, the polymer membrane is prone to swelling in the fermentation broth during the separation process. When the selective layer polymer is swollen, the membrane will be deformed and the selectivity factor of solvents will be decreased.…”

“…The dual-layer composite membrane with the selective polymer layer coated on a supported layer is the common structure for ethanol separation by pervaporation. − For this dual-layer composite structure, the selective layer is directly exposed to the fermentation broth with complex chemical, physical, and biological features. , Thus, the polymer membrane is prone to swelling in the fermentation broth during the separation process. When the selective layer polymer is swollen, the membrane will be deformed and the selectivity factor of solvents will be decreased. , At present, the solutions to solve the membrane swelling are introducing post-assembly thermal aging treatment, applying 2D metal oxide nanosheets, adding inorganic particles, or increasing the cross-linking of the membrane by branching the membrane material. − But these solutions have shortcomings in long thermal time and high temperature, hard collection of laminar membrane, and poor particle distribution and complicated membrane fabrication process.…”