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[{"key": "dc.contributor.author", "value": "J\u00e4rvinen, Juuso", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2017-08-28T09:02:05Z", "language": "", "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2017-08-28T09:02:05Z", "language": "", "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2017", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1719670", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/55194", "language": "", "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "T\u00e4m\u00e4n pro gradu -tutkielman kirjallisessa osassa k\u00e4sitell\u00e4\u00e4n elektroniikkaj\u00e4tett\u00e4 ja metallien talteenottoa. Erityisesti talteenottomenetelmiss\u00e4 keskityt\u00e4\u00e4n typpihappoliuoksiin, sill\u00e4 kokeellisessa osassa tutkimuksen kohteena oleva liuos on typpihappo. N\u00e4iden lis\u00e4ksi tarkastellaan tutkimuksen kannalta merkitt\u00e4vien metallien; kuparin (Cu), nikkelin (Ni), lyijyn (Pb), tinan (Sn), hopean (Ag), sinkin (Zn) sek\u00e4 palladiumin (Pd) fysikaalisia ja kemiallisia ominaisuuksia. Tutkielmassa tuodaan my\u00f6s esille elektroniikkaj\u00e4tteen ymp\u00e4rist\u00f6vaikutukset sek\u00e4 sen taloudellinen merkitys maailmassa. Elektroniikkaj\u00e4te on maailman nopeinten kasvava j\u00e4tefraktio. T\u00e4m\u00e4 on saanut useat tahot her\u00e4\u00e4m\u00e4\u00e4n t\u00e4h\u00e4n kasvavaan ongelmaan, josta on haittaa sek\u00e4 ymp\u00e4rist\u00f6lle ett\u00e4 ihmiselle. Toisaalta elektroniikkaj\u00e4tteen sis\u00e4lt\u00e4m\u00e4t arvokkaat metallit, kuten kulta, hopea ja palladium her\u00e4tt\u00e4v\u00e4t kiinnostusta laajalti sek\u00e4 tutkijoiden ett\u00e4 yritysten piiriss\u00e4. Elektroniikkaj\u00e4tett\u00e4 kierr\u00e4tt\u00e4m\u00e4ll\u00e4 ja metalleja talteenottamalla voidaan saada talteen useita arvokkaita metalleja ja n\u00e4in s\u00e4\u00e4st\u00e4\u00e4 maailman kaivosvarantoja, sek\u00e4 pienent\u00e4\u00e4 elektroniikkalaitteiden raaka-ainekustannuksia. Vaikka osa elektroniikkaj\u00e4tteen sis\u00e4lt\u00e4m\u00e4n metallien pitoisuuksista saattaa olla pieni\u00e4, niiden puhtaus on moninkertainen verrattuna esimerkiksi mineraaleihin. T\u00e4m\u00e4 tekee elektroniikkaj\u00e4tteest\u00e4 eritt\u00e4in merkitt\u00e4v\u00e4n raaka-aineiden l\u00e4hteen. Nykyp\u00e4iv\u00e4n\u00e4 metallien talteenottomenetelm\u00e4t elektroniikkaj\u00e4tteest\u00e4 perustuvat l\u00e4hinn\u00e4 pyrometallurgiaan, joka osaltaan vaatii runsaasti energiaa ja saattaa muodostaa lis\u00e4ksi toksisia yhdisteit\u00e4 polttoprosessissa. T\u00e4m\u00e4n vuoksi tutkielmassa k\u00e4yd\u00e4\u00e4n l\u00e4pi uudenlaisia menetelmi\u00e4, joita olisi mahdollista hy\u00f6dynt\u00e4\u00e4 j\u00e4tteenk\u00e4sittelyss\u00e4. N\u00e4ist\u00e4 t\u00e4rkeimpi\u00e4 ovat hydrometallurgiset menetelm\u00e4t, ja erityisesti typpihappoliuotus. Ty\u00f6ss\u00e4 tarkastellaan my\u00f6s erilaisia metallien talteenottomenetelmi\u00e4 typpihappoliuoksista. Esimerkiksi neste-nesteuutto ja ioninvaihtomateriaalit, sek\u00e4 elektrolyysi ovat potentiaalisia menetelmi\u00e4 eri metallien talteenottamiseksi typpihappoliuoksista. Perinteisten teollisuudessa k\u00e4ytettyjen menetelmien ohella tutkielmassa esitell\u00e4\u00e4n muutamia tulevaisuuden tekniikoita. Esimerkiksi biometallurgia on kiinnostuksen kohteena uusimmissa tutkimuksissa sen v\u00e4h\u00e4isen raaka\u2013ainekulutuksen johdosta.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Juuso J\u00e4rvinen (juhepeja) on 2017-08-28 09:02:04.701079. Form: Pro gradu -lomake (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/pro-gradu-lomake). JyX data: [jyx_publishing-allowed (fi) =True]", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija.group@korppi.jyu.fi) on 2017-08-28T09:02:05Z\r\nNo. of bitstreams: 2\r\nURN:NBN:fi:jyu-201708283584.pdf: 6994346 bytes, checksum: 02b07ff94fa7f08a0baba475d9d83405 (MD5)\r\nlicense.html: 4824 bytes, checksum: 01a8449056bca6c60d5a4938805726b8 (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2017-08-28T09:02:05Z (GMT). No. of bitstreams: 2\r\nURN:NBN:fi:jyu-201708283584.pdf: 6994346 bytes, checksum: 02b07ff94fa7f08a0baba475d9d83405 (MD5)\r\nlicense.html: 4824 bytes, checksum: 01a8449056bca6c60d5a4938805726b8 (MD5)\r\n Previous issue date: 2017", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "1 verkkoaineisto (94 sivua)", "language": null, "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "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": "WEEE", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "SER", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "Elektroniikkaj\u00e4te", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "Typpihappo", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Elektroniikkaj\u00e4tteen typpihappoliuotus ja metallien talteenotto", "language": null, "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-201708283584", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", 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