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dc.contributor.authorPesonen, Janne
dc.contributor.authorMyllymäki, Pekka
dc.contributor.authorTuomikoski, Sari
dc.contributor.authorVervecken, Gwen
dc.contributor.authorHu, Tao
dc.contributor.authorProkkola, Hanna
dc.contributor.authorTynjälä, Pekka
dc.contributor.authorLassi, Ulla
dc.date.accessioned2019-04-30T05:29:42Z
dc.date.available2019-04-30T05:29:42Z
dc.date.issued2019
dc.identifier.citationPesonen, J., Myllymäki, P., Tuomikoski, S., Vervecken, G., Hu, T., Prokkola, H., Tynjälä, P., & Lassi, U. (2019). Use of Calcined Dolomite as Chemical Precipitant in the Simultaneous Removal of Ammonium and Phosphate from Synthetic Wastewater and from Agricultural Sludge. <i>ChemEngineering</i>, <i>3</i>(2), Article 40. <a href="https://doi.org/10.3390/chemengineering3020040" target="_blank">https://doi.org/10.3390/chemengineering3020040</a>
dc.identifier.otherCONVID_30540452
dc.identifier.otherTUTKAID_81284
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/63658
dc.description.abstractPhosphorus as phosphate and nitrogen as ammonium or nitrate are the main nutrients in wastewaters and agricultural sludges. They runoff easily to waterways and cause eutrophication in water bodies. However, ammonium and phosphate could be precipitated simultaneously and used as recycled nutrients. In this research, dolomite calcined at 650 °C, 750 °C, or 950 °C and commercial MgO were used as precipitants in simultaneous phosphate and ammonium removal from synthetic (NH4)2HPO4 solution and agricultural sludge. Calcination at 750 °C was the preferred option as dolomite was decomposed to MgO and CaCO3 for optimal struvite precipitation. Molar ratios of 1.1–1.6:1–2:2 (Mg:P:N) were employed in the experiments. Very robust ammonium removal was obtained with MgO (57%), dolomite 650 °C and dolomite 750 °C (75%). MgO removed almost all phosphate, while dolomite 650 °C removed 65%, and dolomite 750 °C removed 60% (70% from agricultural sludge). Some part of the phosphate was adsorbed, most likely by CaCO3, during dolomite precipitation. Struvite was the only identified reaction product in all samples after 24 h of precipitation. Calcined dolomite had great potential in ammonium and phosphate precipitation from both synthetic waters and agricultural sludges and the precipitates could be used as recycled fertilizers.fi
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherMDPI AG
dc.relation.ispartofseriesChemEngineering
dc.rightsCC BY 4.0
dc.subject.otherammonium
dc.subject.otherjätevedet
dc.subject.otherprecipitant
dc.subject.otherstruvite
dc.subject.otherphosphate
dc.titleUse of Calcined Dolomite as Chemical Precipitant in the Simultaneous Removal of Ammonium and Phosphate from Synthetic Wastewater and from Agricultural Sludge
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201904262297
dc.contributor.laitosKokkolan yliopistokeskus Chydeniusfi
dc.contributor.laitosKokkola University Consortium Chydeniusen
dc.contributor.oppiaineSoveltavan kemian yksikköfi
dc.contributor.oppiaineThe Unit of Applied Chemistryen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2019-04-26T12:15:07Z
dc.description.reviewstatuspeerReviewed
dc.relation.issn2305-7084
dc.relation.numberinseries2
dc.relation.volume3
dc.type.versionpublishedVersion
dc.rights.copyright© 2019 by The Authors
dc.rights.accesslevelopenAccessfi
dc.subject.ysodolomiitti
dc.subject.ysofosfaatit
dc.subject.ysosaostus
dc.subject.ysojäteveden käsittely
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p16581
jyx.subject.urihttp://www.yso.fi/onto/yso/p8696
jyx.subject.urihttp://www.yso.fi/onto/yso/p10304
jyx.subject.urihttp://www.yso.fi/onto/yso/p17761
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.3390/chemengineering3020040


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