• After more than 25 years of worldwide intensive research, pervaporation has evolved from a novel research topic to a commercially viable process for certain applications. However, pervaporation must be regarded as a young membrane process compared to other membrane processes like reverse osmosis, ultrafiltration, dialysis, and even electrodialysis.
• There are several practical advantages of pervaporation when compared with other conventional technologies: simple operation and control, reliable performance, high flexibility, unproblematic part-load operation, high product purity (no contamination by entrainer), no environmental pollution, high product yield, low-energy consumption, compact design (low space requirements), short erection time, and uncomplicated capacity enlargement. Nowadays there are also several areas of the technoeconomical success of pervaporation. In general, pervaporation and vapor permeation will, especially, be used in those cases where a small quantity has to be removed from a large quantity. In all the above applications, the most successful processes require integration with existing conventional separation, unit operations. Nevertheless, pervaporation has been identified as areas of vast potential for future research and commercial development.
• In this study, the separation of MTBE from water/wastewater by pervaporation using PEBA membrane was investigated. The sorption and pervaporation experiments were carried out for the different concentrations of feed mixtures at room temperature. PEBA 2533 membrane was prepared and exhibited high separation performances for separating MTBE from wastewater.
• The selectivity values are close to commercial scale; the flux values can be increased easily by membrane module applications. Thus, application of PEBA membranes in industrial-scale pervaporation units may be feasible for separation of MTBE in wastewater.
Selectivity Degree of swelling Weight of the membrane Weight fraction in feed Weight fraction in permeate
Dry MTBE Swollen Water
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