A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Column Adsorption Studies for the Removal of Ammonium Using Na-Zeolite-Based Geopolymers (2022)

Sundhararasu, E., Runtti, H., Kangas, T., Pesonen, J., Lassi, U., & Tuomikoski, S. (2022). Column Adsorption Studies for the Removal of Ammonium Using Na-Zeolite-Based Geopolymers. Resources, 11(12), Article 119. https://doi.org/10.3390/resources11120119

JYU-tekijät tai -toimittajat

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Sundhararasu, Elavarasi; Runtti, Hanna; Kangas, Teija; Pesonen, Janne; Lassi, Ulla; Tuomikoski, Sari

Lehti tai sarja: Resources

eISSN: 2079-9276

Julkaisuvuosi: 2022

Ilmestymispäivä: 11.12.2022

Volyymi: 11

Lehden numero: 12

Artikkelinumero: 119

Kustantaja: MDPI AG

Julkaisumaa: Sveitsi

Julkaisun kieli: englanti

DOI: https://doi.org/10.3390/resources11120119

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/84353

Tiivistelmä

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 R2 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.

YSO-asiasanat: geopolymeerit

Vapaat asiasanat: geopolymer; fixed-bed column; ammonium ion; breakthrough models; regeneration

Liittyvät organisaatiot

Hankkeet, joissa julkaisu on tehty

OKM-raportointi: Kyllä

VIRTA-lähetysvuosi: 2022

JUFO-taso: 1