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[{"key": "dc.contributor.advisor", "value": "V\u00e4is\u00e4nen, Ari", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Puhtim\u00e4ki, Olli", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2024-08-27T05:37:16Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2024-08-27T05:37:16Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2024", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/96766", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "T\u00e4ss\u00e4 pro gradu -tutkielman kirjallisessa osassa tutustutaan \u00f6ljyliuskeeseen, sen k\u00e4ytt\u00f6\u00f6n ja siit\u00e4 muodostuvaan tuhkaan. N\u00e4iden lis\u00e4ksi tarkastellaan ICP-OES analyysimenetelm\u00e4\u00e4 ja metallien talteenottoa ioninvaihdon avulla. \u00d6ljyliuskeesta tuodaan esille ominaisuudet ja sen k\u00e4ytt\u00f6 energiantuotannossa. Energiatuotannon osalta perehdyt\u00e4\u00e4n \u00f6ljyliusketta hy\u00f6dynt\u00e4viin polttoteknologioihin ja niit\u00e4 k\u00e4ytt\u00e4vien voimalaitoksien yleiseen toimintaan. Energiatuotannon prosesseissa muodostuvasta tuhkasta tarkastellaan sen koostumasta, hy\u00f6tyk\u00e4ytt\u00f6\u00e4 sek\u00e4 haittoja ymp\u00e4rist\u00f6lle. Esille nostetaan tuhkasta l\u00f6ytyvi\u00e4 t\u00e4rkeit\u00e4 raaka-aineita, jotka on m\u00e4\u00e4ritelty EU:n puolesta kriittisiksi raaka-aineiksi. T\u00e4m\u00e4 tarkoittaa sit\u00e4, ett\u00e4 n\u00e4iden raaka-aineiden saatavuuteen liittyy tulevaisuudessa riskej\u00e4, jonka takia niit\u00e4 pyrit\u00e4\u00e4n paremmin kierr\u00e4tt\u00e4m\u00e4\u00e4n. Kriittisten raaka-aineiden talteenotto \u00f6ljyliusketuhkasta tarjoaa uuden n\u00e4k\u00f6kulman tuhkan paremmalle hy\u00f6tyk\u00e4yt\u00f6lle. Tutkielmassa perehdyt\u00e4\u00e4n maaper\u00e4n\u00e4ytteille k\u00e4ytett\u00e4viin liuotusmenetelmiin, jotka ovat sovellettavissa \u00f6ljyliuskeen tuhkan liuottamiselle.\nTutkielman kokeellisessa osassa kehitet\u00e4\u00e4n optimaalinen liuotusmenetelm\u00e4 \u00f6ljyliusketuhkalle, jota sovelletaan erilaisille \u00f6ljyliusketuhkan tuhkan\u00e4ytteille. Liuotusmenetelm\u00e4\u00e4 l\u00e4hdettiin selvitt\u00e4m\u00e4\u00e4n useiden erilaisten liuotusmenetelmien kautta, kuten totaalihappohajotuksen, selektiivisen uuttamisen ja heikkouuton avulla. Liuotusmenetelmiss\u00e4 hy\u00f6dynnettiin ultra\u00e4\u00e4nihaudetta, joka poikkeaa yleisesti k\u00e4ytetyst\u00e4 mikroaaltouuniavusteisesta liuotuksesta. Ioninvaihtomateriaaleja hy\u00f6dynt\u00e4m\u00e4ll\u00e4 liuotetusta tuhkasta pyrittiin ottamaan talteen sen sis\u00e4lt\u00e4mi\u00e4 kriittisi\u00e4 raaka-aineita. Talteenottotutkimukset painottuvat metallien talteenottoon ja ioninvaihtomateriaalien adsorptiokykyyn. IR-spektroskopiaa hy\u00f6dynnettiin selvitt\u00e4m\u00e4\u00e4n liuotuksessa syntyv\u00e4n sivutuotteen koostumus.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2024-08-27T05:37:16Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2024-08-27T05:37:16Z (GMT). No. of bitstreams: 0\n Previous issue date: 2024", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "99", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "\u00f6ljyliusketuhka", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "ioninvaihto", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "kriittiset raaka-aineet", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Hydrometallurginen menetelm\u00e4 kriittisten raaka-aineiden talteen ottamiseksi \u00f6ljyliusketuhkasta", "language": "", "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-202408275653", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Kemian laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Chemistry", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Analyyttinen kemia", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Analytical Chemistry", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "40311", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "hydrometallurgia", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "hy\u00f6tyk\u00e4ytt\u00f6", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "tuhka", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "raaka-aineet", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "\u00f6ljyliuske", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kierr\u00e4tys", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "talteenotto", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}]
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