Separations: Materials, Devices, and Processes

Oxygen separation through U-shaped hollow fiber membrane using pure CO2 as sweep gas

  1. Yanying Wei,
  2. Jun Tang,
  3. Lingyi Zhou,
  4. Jian Xue,
  5. Zhong Li,
  6. Haihui Wang*

Article first published online: 28 NOV 2011

DOI: 10.1002/aic.12802

Issue

AIChE Journal

AIChE Journal

Volume 58, Issue 9, pages 2856–2864, September 2012

Additional Information

How to Cite

Wei, Y., Tang, J., Zhou, L., Xue, J., Li, Z. and Wang, H. (2012), Oxygen separation through U-shaped hollow fiber membrane using pure CO2 as sweep gas. AIChE J., 58: 2856–2864. doi: 10.1002/aic.12802

Author Information

  1. School of Chemistry and Chemical Engineering, South China University of Technology, 510640 Guangzhou, China

*School of Chemistry and Chemical Engineering, South China University of Technology, 510640 Guangzhou, China

Publication History

  1. Issue published online: 8 AUG 2012
  2. Article first published online: 28 NOV 2011
  3. Accepted manuscript online: 28 OCT 2011 08:43AM EST
  4. Manuscript Revised: 8 OCT 2011
  5. Manuscript Received: 21 JUL 2011

Funded by

  • Natural Science Foundation of China. Grant Numbers: 21176087, U0834004, 20936001
  • National Basic Research Program of China. Grant Number: 2009CB623406
  • Science-Technology Plan of Guangzhou City. Grant Number: 2009J1-C511-1
  • Fundamental Research Funds for the Central Universities, SCUT. Grant Number: 2009220038

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Keywords:

  • hollow fiber;
  • membrane;
  • oxygen permeation;
  • CO2;
  • mixed conductor

Abstract

A number of U-shaped K2NiF4-type oxide hollow fiber membranes based on (Pr0.9La0.1)2(Ni0.74Cu0.21Ga0.05)O4+δ (PLNCG) were successfully prepared by a phase inversion spinning process. The PLNCG hollow fiber membranes were then used to investigate the effect of CO2 concentration in both the sweep gas and the feed air on the oxygen permeation flux. With pure CO2 as the sweep gas and even 10% CO2 in the feed air, a steady oxygen permeation flux of 0.9 mL/min·cm2 (STP) is obtained at 975°C during 310 h, and no decline of the oxygen permeation flux is observed. XRD, SEM and EDS characterizations show the spent membrane still maintains the intact microstructure and perfect K2NiF4-type phase structure without carbonate, which indicates that the U-shaped PLNCG hollow fiber membrane is a very stable membrane under CO2 atmosphere and has great potential for the practical application in oxyfuel techniques for CO2 capture and storage.©2011 American Institute of Chemical Engineers AIChE J, 2012

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