Separation of CO2/CH4 using carbon molecular sieve (CMS) at low and high pressure

Luis A.M. Rocha, Kari Anne Andreassen, Carlos A. Grande

Research output: Contribution to journalArticlepeer-review

66 Scopus citations


Separation of CO2from CH4-rich streams is an important separation for upgrading biogas and natural gas. The main difference between these two sources of methane is the pressure at which they are available. In order to design an adsorption process without extrapolating data, it is necessary to measure the behaviour of the adsorbent in the current conditions. In this work, adsorption properties of CH4and CO2on a commercial carbon molecular sieve (CMS) material are reported. Adsorption equilibrium of pure gases at 298 and 343 K were measured until 70 bar for CH4and 30 bar for CO2. In order to determine the performance of the adsorbent using a real mixture, binary breakthrough curves (10% CO2–90% CH4) were measured at 314 K at pressures from 5 to 70 bar. A mathematical model was used to interpret the data obtained.
Original languageEnglish (US)
Pages (from-to)148-157
Number of pages10
JournalChemical Engineering Science
StatePublished - Jan 1 2017
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2022-09-13

ASJC Scopus subject areas

  • General Chemical Engineering
  • General Chemistry
  • Applied Mathematics
  • Industrial and Manufacturing Engineering


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