Pervaporation of Model Acetone-Butanol-Ethanol Fermentation Product Solutions Using Polytetrafluoroethylene Membranes

A carbon nanotube filled polydimethylsiloxane hybrid membrane for enhanced butanol recovery

“…For comparison, some selected studies with various kinds of membranes are summarized in Table 1. In general, the main problem of the homogeneous membranes such as polytetrafluoroethylene (PTFE) and poly(ether block amide) (PEBA 2533) membranes is their deficiencies in high butanol separation factor or flux2021. Although the PDMS membrane has good thermal and mechanical stability with superior performance compared to other hydrophobic membranes, its butanol selectivity over water is still not satisfactory4.…”

Extraction‐Fermentation Hybrid (Extractive Fermentation)

“…However, due to the high free volume, which attracts foulants inside the membrane, the performance of PTMSP is not as stable as PDMS, and the flux and selectivity of PTMSP gradually decrease over time (Schmidt et al ., 1997;Fadeev et al ., 2003). Other polymeric materials, including polypropylene (PP) and polytetrafluoroethylene (PTFE), have also been studied as potential membranes for pervaporation, but they had relatively low separation factors ranging from 3 to 9.5 for butanol/water separation (Qureshi et al ., 1992;Vrana et al ., 1993).…”

Biobutanol from Renewable Agricultural and Lignocellulose Resources and Its Perspectives as Alternative of Liquid Fuels

“…The apparatus containing polytetrafluoroethylene membranes was tested using butanol-water and model solutions of ABE products. Parameters such as product concentration, component effect, temperature and permeate side pressure were examined [184].…”