Translated title of the contribution: The Effect of Ca Content on CaO-Zeolite on Nitrogen Adsorption Capacity

Mohammad Nasikin, Tania Surya Utami, Agustina Tp Siahaan

Research output: Contribution to journalArticlepeer-review


In industry, Ca zeolite is used as nitrogen selective adsorbent with the use of PSA (Pressure Swing Adsorption)/VSA (Vacuum Swing Adsorption) methods. Natural zeolite modified to be Cao-zeolite by ion exchange process using Ca(OH)2. Adsorption test was done on CaO-zeolite with different Ca concentration to understand how it’s adsorption phenomena on oxygen and nitrogen. Adsorption test has been done for CaO-zeolite with Ca concentration = 0,682%, 0,849% and 1,244% to oxygen and nitrogen with equal concentration seperately. Pressure variation has being done three times (5 minutes long each time) adsorption time to analyze the connection between adsorption time and how many moles of nitrogen and oxygen being adsorbed. Adsorption test showed that there is a limit of Ca concentration to make CaO-zeolite more selective to adsorb nitrogen. CaO-zeolite with Ca concentration . 1,125% adsorb nitrogen more selective than oxygen. Because the nitrogen content in air is four times the oxygen so we can conclude that the air adsorption rate by zeolite will be four times the adsorption rate by oxygen. This differences in adsorption rate will make the use for CaO-zeolite as a oxygen enrichment equipment possible.

Translated title of the contributionThe Effect of Ca Content on CaO-Zeolite on Nitrogen Adsorption Capacity
Original languageIndonesian
JournalMAKARA Journal of Technology Series
Issue number2
Publication statusPublished - 2 Aug 2002


  • CaO-zeolite
  • adsorption
  • limit
  • adsorption rate
  • nitrogen


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