IDEAS home Printed from https://ideas.repec.org/a/gam/jresou/v11y2022i12p119-d1000220.html
   My bibliography  Save this article

Column Adsorption Studies for the Removal of Ammonium Using Na-Zeolite-Based Geopolymers

Author

Listed:
  • Elavarasi Sundhararasu

    (Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland)

  • Hanna Runtti

    (Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland)

  • Teija Kangas

    (Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland)

  • Janne Pesonen

    (Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland)

  • Ulla Lassi

    (Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland
    Unit of Applied Chemistry, Kokkola University Consortium Chydenius, University of Jyvaskyla, Talonpojankatu 2B, FI-67100 Kokkola, Finland)

  • Sari Tuomikoski

    (Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland)

Abstract

The aim of this study was to examine the removal of ammonium ions from a synthetic model solution by using Na-zeolite-based geopolymers. Na-zeolite (=analcime) is a residue from mining industry. Three adsorbents were prepared from Na-zeolite using different production steps and metakaolin as a blending agent. These novel adsorbents were investigated in a fixed-bed column system where the effects of different flow rates with the initial ammonium concentration of 40 mg/L were studied. The Thomas, Bohart–Adams and Yoon–Nelson breakthrough curve models fitted well with the experimental data with a high R 2 value. After adsorption experiments, adsorbents were regenerated using a mixture of 0.2 M NaCl and 0.1 M NaOH as a regeneration agent; after that, adsorbents were reutilised for ammonium ion adsorption for three adsorption–regeneration cycles. The results of the experiment indicate that all the prepared analcime-based geopolymers are suitable adsorbents for the removal of ammonium ions and that capacity remains nearly constant for two of them during two adsorption–regeneration cycles.

Suggested Citation

  • Elavarasi Sundhararasu & Hanna Runtti & Teija Kangas & Janne Pesonen & Ulla Lassi & Sari Tuomikoski, 2022. "Column Adsorption Studies for the Removal of Ammonium Using Na-Zeolite-Based Geopolymers," Resources, MDPI, vol. 11(12), pages 1-12, December.
    • Handle: RePEc:gam:jresou:v:11:y:2022:i:12:p:119-:d:1000220
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2079-9276/11/12/119/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2079-9276/11/12/119/
    Download Restriction: no
    ---><---

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jresou:v:11:y:2022:i:12:p:119-:d:1000220. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.