Pervaporation dehydration of organics

Burshe MC, Netke SA, Sawant SB, Joshi JB, and Pangarkar VG. Pervaporative dehydration of organic solvents. Sep. Sci. Tech. 1997 32(8) 1335-1349. 

Urtiaga, A., Casado, C., Asaeda, M. and Ortiz, I. 2006. Comparison of SiO3-ZrO2-50% and commercial SiOj membrane on the pervaporative dehydration of organic solvents. Desalination 193 97-102. 

In liquid separation, hollow fiber membranes based on PBI have shown excellent performance for pervaporation dehydration of organic liquids. For example, a dual layer PEI-PBI hollow fiber membrane with an outer selective layer of PBI showed better performance than most other polymeric membranes in pervaporation dehydration of ethylene glycol. Sulfonation modifications of PBI membranes have demonstrated excellent separation efficacies in the dehydration of acetic acid. Studies have shown that PBI hollow fiber membranes were effective in separating chromates from solutions. Also, PBI nanofiltration hollow fiber membranes are promising candidates as forward osmosis membranes. In gas separation, recent studies sponsored by the Department of Energy at Los Alamos National Laboratories and SRI International demonstrated potential applications of PBI membranes in carbon capture and Hj purification from synthesis gas streams at elevated temperatures. H2/CO2 selectivity > 40 has been achieved at H2 permeability of 200 GPU at 250°C. ... 

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