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dc.contributor.authorSundhararasu, Elavarasi
dc.contributor.authorRuntti, Hanna
dc.contributor.authorKangas, Teija
dc.contributor.authorPesonen, Janne
dc.contributor.authorLassi, Ulla
dc.contributor.authorTuomikoski, Sari
dc.date.accessioned2022-12-13T12:42:26Z
dc.date.available2022-12-13T12:42:26Z
dc.date.issued2022
dc.identifier.citationSundhararasu, 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. <i>Resources</i>, <i>11</i>(12), Article 119. <a href="https://doi.org/10.3390/resources11120119" target="_blank">https://doi.org/10.3390/resources11120119</a>
dc.identifier.otherCONVID_164370873
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/84353
dc.description.abstractThe 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.en
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherMDPI AG
dc.relation.ispartofseriesResources
dc.rightsCC BY 4.0
dc.subject.othergeopolymer
dc.subject.otherfixed-bed column
dc.subject.otherammonium ion
dc.subject.otherbreakthrough models
dc.subject.otherregeneration
dc.titleColumn Adsorption Studies for the Removal of Ammonium Using Na-Zeolite-Based Geopolymers
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202212135610
dc.contributor.laitosKokkolan yliopistokeskus Chydeniusfi
dc.contributor.laitosKokkola University Consortium Chydeniusen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.relation.issn2079-9276
dc.relation.numberinseries12
dc.relation.volume11
dc.type.versionpublishedVersion
dc.rights.copyright© 2022 by the authors. Licensee MDPI, Basel, Switzerland
dc.rights.accesslevelopenAccessfi
dc.relation.grantnumberA74635
dc.subject.ysogeopolymeerit
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p29122
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.3390/resources11120119
dc.relation.funderRegional Council of Central Ostrobothniaen
dc.relation.funderKeski-Pohjanmaan liittofi
jyx.fundingprogramERDF European Regional Development Fund, React-EUen
jyx.fundingprogramEAKR Euroopan aluekehitysrahasto, React-EUfi
jyx.fundinginformationThis work was supported by Maa-ja Vesitekniikan tuki ry and conducted as part of WaterPro (ERDF Project No. A74635, funded by the Central Ostrobothnia Regional Council, the European Union, the European Regional Development Fund, and the Leverage from the EU).
dc.type.okmA1


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