| fullrecord |
[{"key": "dc.contributor.advisor", "value": "V\u00e4is\u00e4nen, Ari", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Koskinen, Jutta", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Samulinen, Mikko", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2023-04-28T06:06:29Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2023-04-28T06:06:29Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2023", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/86693", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "T\u00e4m\u00e4n pro gradu -tutkielman kirjallisessa osassa perehdyt\u00e4\u00e4n s\u00e4hk\u00f6- ja elektroniikkalaitteissa k\u00e4ytett\u00e4viin kriittisiin raaka-aineisiin. Niist\u00e4 tarkemmin k\u00e4sitell\u00e4\u00e4n puolijohteissa\nhy\u00f6dynnett\u00e4v\u00e4\u00e4 piit\u00e4, galliumia, germaniumia ja indiumia, kondensaattoreissa k\u00e4ytett\u00e4v\u00e4\u00e4 tantaalia ja kestomagneeteissa k\u00e4ytett\u00e4vi\u00e4 harvinaisia maametalleja. Erityist\u00e4 huomiota\nkiinnitet\u00e4\u00e4n raaka-aineiden esiintyvyyteen, tuotantoon ja kierr\u00e4tykseen. S\u00e4hk\u00f6- ja\nelektroniikkaromun (SER) kierr\u00e4tyksess\u00e4 keskityt\u00e4\u00e4n fysikaaliseen esik\u00e4sittelyyn ja\nhydrometallurgisiin talteenottomenetelmiin. Talteenottomenetelmist\u00e4 esitell\u00e4\u00e4n neste-nesteuutto, elektrolyysi ja ioninvaihto, joista viimeisen\u00e4 mainittu nostetaan tarkempaan k\u00e4sittelyyn.\nT\u00e4ss\u00e4 yhteydess\u00e4 esitell\u00e4\u00e4n orgaanisia ioninvaihtomateriaaleja, niiden rakenteita, luokittelua ja\nk\u00e4ytt\u00f6\u00e4 kriittisten raaka-aineiden talteenotossa. Vaihtoehtona orgaanisille\nioninvaihtomateriaaleille esitell\u00e4\u00e4n zeoliitit, joiden ominaisuuksiin ioninvaihtimina ja\nsorbenttimateriaaleina perehdyt\u00e4\u00e4n seikkaper\u00e4isesti. Lis\u00e4ksi esitell\u00e4\u00e4n zeoliittien k\u00e4ytt\u00f6\u00e4\nhaitallisten aineiden poistossa sek\u00e4 kriittisten raaka-aineiden talteenotossa. Lopuksi k\u00e4yd\u00e4\u00e4n\nl\u00e4pi plasmaemission k\u00e4ytt\u00f6\u00e4 metallianalytiikassa k\u00e4sittelem\u00e4ll\u00e4 ICP-OES:n toimintaperiaatetta.\nTutkielman kokeellisessa osassa tehtiin kartoitusta viiden eri zeoliittimateriaalin\ntalteenottokyvyist\u00e4 ja n\u00e4ist\u00e4 materiaali Zeolite ZSM-5 havaittiin l\u00e4hes t\u00e4ysin selektiiviseksi\ntantaalin suhteen. N\u00e4ytteen\u00e4 toimi komponenttij\u00e4te, jonka liuotus oli optimoitu tantaalin\nsuhteen. Zeolite ZSM-5 saavutettu suurin tantaalin talteenottoaste, 99,5 %, havaittiin 0,01 M\nrikkihappotaustassa. Selektiivisyyden kannalta kuitenkin paras happotausta oli 0,5 M\nrikkihappo. T\u00e4ll\u00f6in tantaalia saatiin talteen 98,4 %. Kyseist\u00e4 happopitoisuutta k\u00e4ytettiin\nkontaktiajan vaikutuksen ja Zeolite ZSM-5:n maksimiadsorptiokapasiteetin m\u00e4\u00e4ritt\u00e4misess\u00e4.\nAikav\u00e4lill\u00e4 5\u201390 minuuttia talteenoton saanto ZSM-5:ll\u00e4 kasvoi nopeasti ja alkoi tasaantua 120\nminuutin j\u00e4lkeen. ZSM-5:n adsorptiokapasiteetin maksimi tantaalin suhteen oli 10,74 mg g-1.\nAlustavissa eluointikokeissa havaittiin, ett\u00e4 etanoliamiini soveltui tantaalin eluoimiseksi. Sill\u00e4\nonnistuttiin eluoimaan 52 \u00b1 4 % adsorboituneesta tantaalista.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2023-04-28T06:06:29Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2023-04-28T06:06:29Z (GMT). No. of bitstreams: 0\n Previous issue date: 2023", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "86", "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": null, "element": "rights", "qualifier": null, "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": "Zeoliittien k\u00e4ytt\u00f6 kriittisten raaka-aineiden talteenotossa", "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-202304282791", "language": "", "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.copyright", "value": "\u00a9 The Author(s)", "language": null, "element": "rights", "qualifier": "copyright", "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": "sorptio", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "tantaali", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "zeoliitit", "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": "raaka-aineet", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "talteenotto", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "harvinaiset maametallit", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "germanium", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "s\u00e4hk\u00f6- ja elektroniikkaromu", "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"}]
|