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dc.contributor.authorMyllymäki, Pekka
dc.contributor.authorPesonen, Janne
dc.contributor.authorRomar, Henrik
dc.contributor.authorHu, Tao
dc.contributor.authorTynjälä, Pekka
dc.contributor.authorLassi, Ulla
dc.date.accessioned2019-05-08T05:49:54Z
dc.date.available2019-05-08T05:49:54Z
dc.date.issued2019fi
dc.identifier.citationMyllymäki, P., Pesonen, J., Romar, H., Hu, T., Tynjälä, P., & Lassi, U. (2019). The Use of Ca- and Mg-Rich Fly Ash as a Chemical Precipitant in the Simultaneous Removal of Nitrogen and Phosphorus - Recycling and Reuse. <em>Recycling</em>, 4 (2), 14. <a href="https://doi.org/10.3390/recycling4020014">doi:10.3390/recycling4020014</a>fi
dc.identifier.otherTUTKAID_81375
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/63769
dc.description.abstractThe European Union’s circular economy strategy aims to increase the recycling and re-use of products and waste materials. According to the strategy, the use of industry waste material should be more effective. A chemical precipitation method to simultaneously remove phosphorus and nitrogen from synthetic (NH4)2HPO4 solution and the liquid phase of anaerobic digestate using fly ash as a precipitant was tested. Fly ash is a waste material formed in the power plant process. It mainly contains calcium oxide (CaO) and magnesium oxide (MgO). Saturated precipitant solution was prepared from fly ash, which was added in small proportions to (NH4)2HPO4 solution during the experiment. Fly ash’s effectiveness as a precipitant was compared with that of commercial CaO and MgO salts, and it can be observed that fly ash removed as much ammonium and phosphate as commercial salts. Fly ash sufficiently removed ammonium nitrogen and phosphate from the liquid phase of anaerobic digestate, which led to the formation of ammonium magnesium hydrogen phosphate hydrate, struvite (NH4MgPO4·6H2O), and calcium hydroxide phosphate, monetite, CaPO3(OH). In this study, we have shown for the first time that fly ash can be used to manufacture recycled, slow-release fertilizers from anaerobic digestate.fi
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherMDPI AG
dc.relation.ispartofseriesRecycling
dc.rightsCC BY 4.0
dc.subject.otherammoniumfi
dc.subject.otherlentotuhkafi
dc.subject.otherfosfaattifi
dc.subject.othersaostuminenfi
dc.subject.otherlannoitteetfi
dc.subject.otherfly ashfi
dc.subject.otherphosphatefi
dc.subject.otherprecipitationfi
dc.subject.otherrecycling fertilizerfi
dc.subject.otherstruvitefi
dc.titleThe Use of Ca- and Mg-Rich Fly Ash as a Chemical Precipitant in the Simultaneous Removal of Nitrogen and Phosphorus - Recycling and Reusefi
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201905072434
dc.contributor.laitosKokkolan yliopistokeskus Chydeniusfi
dc.contributor.laitosKokkola University Consortium Chydeniusen
dc.contributor.oppiaineKemia
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2019-05-07T12:15:33Z
dc.description.reviewstatuspeerReviewed
dc.relation.issn2313-4321
dc.relation.numberinseries2
dc.relation.volume4
dc.type.versionpublishedVersion
dc.rights.copyright© the Authors. 2019.
dc.rights.accesslevelopenAccessfi
dc.format.contentfulltext
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.3390/recycling4020014


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