Simultaneous biogas purification and CO2 capture by vacuum swing adsorption using zeolite NaUSY

Yangyang Jiang, Jianghua Ling, Penny Xiao, Yingdian He, Qinghu Zhao, Zheng Chu, Yingshu Liu, Ziyi Li, Paul A. Webley

Research output: Contribution to journalArticleResearchpeer-review

38 Citations (Scopus)


In this study we report on a vacuum swing adsorption process and adsorbent which allows simultaneous production of high purity methane and high purity carbon dioxide from a biogas feedstock. This is a departure from conventional biogas purification processes which focus on production of high purity methane while venting the lower purity methane/carbon dioxide stream. Using NaUSY as the adsorbent, and based on experimental and simulation data, we are able to produce product purities of 98% CH4 and 95% CO2 in the two product streams, respectively, for an energy consumption of 0.23 GJ/tCO2 from a feed containing 50/50% CH4/CO2.

Original languageEnglish
Pages (from-to)2593-2602
Number of pages10
JournalChemical Engineering Journal
Publication statusPublished - 15 Feb 2018
Externally publishedYes


  • Activated carbon
  • Biogas purification
  • Vacuum swing adsorption
  • Zeolites

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