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MODELING OF MULTICOMPONENT PERVAPORATION FOR REMOVAL OF VOLATILE ORGANIC COMPOUNDS FROM WATER
Citation:
Wenchang, J., S. Sikdar, AND S. Hwang. MODELING OF MULTICOMPONENT PERVAPORATION FOR REMOVAL OF VOLATILE ORGANIC COMPOUNDS FROM WATER. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-94/470 (NTIS PB95137329).
Description:
A resistance in series model was used to study the pervaporation of multiple volatile organic compounds (VOCs) water mixtures. ermeation experiments were carried out for four membranes and three VOCs. he membrane permeability were calculated in terms of the resistance in series model. he membrane performances were then compared with each other based on the permeabilities. oth organic and water permeabilities of polyether-block-polyamides (PEBA) membrane or one-VOC-water, two-VOC-water and three-Voc-Water mixtures were found to be comparable with each other. he coupling effects for trance organic transfer through the membrane were not observed when the downstream pressure was close to zero. ownstream pressure effects for polydimethylsiloxane (PDMS) membrane were determined. he experimental results were correlated very well by a simple mass transfer equation. t was clearly shown in this work that the resistance in series model could be used effectively to describe the pervaporation of dilute multicomponent VOC-water mixtures through polymeric membranes.
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MODELING OF MULTICOMPONENT PERVAPORATION FOR REMOVAL OF VOLATILE ORGANIC COMPOUNDS FROM WATER