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Modeling and Analysis of Carbon Dioxide Permeation Through Ceramic-carbonate Dual-phase Membranes by Zebao Rui; Matthew Anderson; Y.S. Lin; Yongdan Li is a Engineering article available to read on EtoBox.

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A theoretical model has been developed for CO 2 /O 2 permeation through a dual-phase membrane consisting of mixed-conducting oxide ceramic (MCOC) and molten carbonate (MC) phases. Somewhat simpler theoretical CO 2 permeation equation is obtained for the special case or pure CO 2 permeation case, i.e., oxygen partial pressure in the feeding gases is zero or electronic transference number of the MCOC phase is zero. The results show that CO 2 permeation flux is much improved by involving oxygen permeation, which is more than one order of magnitude higher than the corresponding CO 2 permeation flux for a pure CO 2 permeation case. The fluxes of CO 2 and O 2 increase with increasing O 2 partial pressure in the feeding gases. Both the CO 2 and O 2 permeation fluxes increase with increasing electronic conductivity ( h • ) of the MCOC phase. The CO 2 permeation flux increases with increasing ionic conductivity ( V •• ) of the MCOC phase at a low electronic conductivity, i.e., h • ≤ 0.1 S/cm, while decreases with an increase of V •• at a high electronic conductivity, i.e., h • > 1 S/cm. For pure CO 2 permeation, the CO 2 permeation flux increases with the increase of V •• and decreases with

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Author

Zebao Rui; Matthew Anderson; Y.S. Lin; Yongdan Li

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0376-7388)

Published

2009

Language

EN

Field

Engineering (Physical Sciences)