Pervaporation
41 - 48 of 48 results
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Surface modifying macromolecules (SMMs) are oligomeric fluoropolymers synthesized by urethane chemistry and tailored with fluorinated endgroups. Two novel SMM formulations were blended into polyvinylidene fluoride (PVDF) casting solutions containing N,N-dimethylacetamide. Based on the advancing and
Desalination 148 (2002)
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A mordenite membrane was synthesized on a ceramic tubular support by seeded hydrothermal synthesis and tested in the dehydration of a water/ethanol mixture by pervaporation. The influence of synthesis conditions (time and gel composition) on the water/ethanol separation factor and water flux was inv
Desalination 148 (2002)
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The aim of this work is the development of inorganic membranes that will enable broad application of pervaporation/vapour permeation technology in the chemical industry. This can be achieved by improvement of the existing microporous membranes and the development of new types with enhanced thermoche
Desalination 148 (2002)
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Composite membranes for pervaporation of water/alcohol mixtures were prepared by consecutive alternating adsorption of poly(acrylic acid) (polyanion) and poly(ethylenimine) (polycation) on a polyamide-6 substrate. The influence of preparation conditions on the pervaporation separation properties of
Desalination 148 (2002)
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Desalination 147 (2002)
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Separation factors for pervaporation of 5 wt% organic/water mixtures through Ge-ZSM-5 zeolite membranes are strongly correlated with the liquid-phase fugacities of the organic components in the feed. Competitive adsorption coverages probably depend on fugacity. This correlation allows qualitative pr
Desalination 147 (2002)
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A computational model has been developed for the simulation and optimization of the pervaporation process. This model involves solving coupled mass and energy balances, and chemical potential equations using a genetic algorithm. A visual, windows-based, user-friendly design software has been develop
Desalination 145 (2002)
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Preparation of the silicalite membrane with a seed technique on the porous sintered stainless steel support disk with an average pore diameter of 2 µm was examined under various hydrothermal synthesis conditions. Effects of the chemical composition of the starting hydrogel and the seed crystal size
Desalination 144 (2002)
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