Lampung natural zeolite filled cellulose acetate membrane for pervaporation of ethanol-water mixtures
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چکیده
منابع مشابه
Pervaporation dehydration of isopropanol-water mixtures using chitosan zeolite-a membranes
Pervaporation (PV) dehydration of isopropanol (IPA) using modified chitosan membranes was studied. The membranes were prepared from chitosan and were modified by using zeolite-A. Pre-weighed amount of zeolite-A was added into acidic solvent and stirred to produce homogeneous solution. Chitosan flakes were then added into the solution and stirred overnight. Various ratios of zeolite-A and chitos...
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Carbon dioxide (CO2) release from the exhaust gas streams of power plants that burn fossil fuels contributes the most emission of this gas, which includes more than half of the greenhouse effects. Thus, the separation of CO2 from exhaust gases is one of the main environmental concerns. Membrane technology, due to many advantages, has attracted many research attentions among the various gas sepa...
متن کاملOn the Mechanism of Separation of Ethanol/water Mixtures by Pervaporation Ii. Experimental Concentration Profiles
Ethanol-water concentration profiles in cellulose acetate membranes were measured under steady-state pervaporation conditions. Knowledge of these profiles leads to a better understanding of the diffusion process during pervaporation. The concentration profiles were determined by a film-stack method, using three to six layers. It is shown that permeation of ethanol-water mixtures proceeds in a c...
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Poly (vinyl alcohol) membranes were prepared by in-situ crosslinking of poly (vinyl alcohol) with glutaraldehyde as a crosslinking agent and hydrochloric acid as catalyst and the membranes were used to separate mixtures of IPA and water. Effects of feed composition, operating temperature, vacuum pressure and Reynolds number on permeation performance of the membranes were evaluated. The results ...
متن کاملON THE MECHANISM OF SEPARATION OF ETHANOL/WATER MIXTURES BY PERVAPORATION I. CALCULATIONS OF CONCENTRATION PROFILES* M.H.V. MULDER and C.A. SMOLDERS
A solution--diffusion model for the permeation of liquid mixtures through polymeric membranes taking into account coupling of fluxes has been developed. The model is applied to the separation by pervaporation of ethanol-water mixtures through cellulose acetate. In order to determine the activities of the permeating components in the polymeric membrane, values of polymer-liquid and liquid---liqu...
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ژورنال
عنوان ژورنال: IOP Conference Series: Earth and Environmental Science
سال: 2018
ISSN: 1755-1307,1755-1315
DOI: 10.1088/1755-1315/141/1/012013