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[{"key": "dc.contributor.advisor", "value": "V\u00e4is\u00e4nen, Ari", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Kulom\u00e4ki, Suvi", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2016-12-19T12:07:49Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2016-12-19T12:07:49Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2016", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1644715", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/52443", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "T\u00e4ss\u00e4 pro gradu -tutkielmassa on perehdytty elektroniikkaj\u00e4tteen ja erityisesti piirilevyj\u00e4tteen koostumukseen ja kierr\u00e4tykseen. Useita erilaisia tekniikoita piirilevyjen kierr\u00e4tykseen on tarkasteltu. S\u00e4hk\u00f6- ja elektroniikkalaitteiden lyhentynyt k\u00e4ytt\u00f6ik\u00e4 synnytt\u00e4\u00e4 valtavat m\u00e4\u00e4r\u00e4t e-j\u00e4tett\u00e4. E-j\u00e4tteen kierr\u00e4tys on t\u00e4rke\u00e4\u00e4 niin materiaalien kuin metallien talteen ottamiseksi. Erityisesti jalometallien talteenotto on kiinnostavaa niiden taloudellisen arvon vuoksi. Piirilevyt sis\u00e4lt\u00e4v\u00e4t paljon arvokkaita metalleja, mutta ne ovat my\u00f6s vaarallista j\u00e4tett\u00e4.\n\nPiirilevyjen koostumuksen analysointi on eritt\u00e4in haastavaa monimuotoisesta materiaalista johtuen. Analysointi on kuitenkin t\u00e4rke\u00e4\u00e4, jotta voidaan kehitt\u00e4\u00e4 kustannustehokas ja ymp\u00e4rist\u00f6yst\u00e4v\u00e4llinen kierr\u00e4tysmenetelm\u00e4. T\u00e4ll\u00e4 hetkell\u00e4 piirilevyj\u00e4 kierr\u00e4tet\u00e4\u00e4n maailmanlaajuisesti erilaisilla teollisilla prosesseilla, mutta e-j\u00e4tteen kierr\u00e4tyksess\u00e4 on yh\u00e4 paljon parannettavaa. Piirilevyj\u00e4 voidaan kierr\u00e4tt\u00e4\u00e4 sek\u00e4 fysikaalisilla ett\u00e4 kemiallisilla menetelmill\u00e4. Metallijakeen talteenotto voidaan tehd\u00e4 joko pyro- hydro- tai biometallurgisesti ja metalleja voidaan puhdistaa edelleen s\u00e4hk\u00f6kemiallisilla menetelmill\u00e4. Ei-metallisen jakeen talteenotolla ja siit\u00e4 valmistettavilla tuotteilla voidaan my\u00f6s parantaa piirilevyjen kierr\u00e4tysastetta.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Suvi Kulom\u00e4ki (sutukulo) on 2016-12-19 12:07:48.764652. 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 2016-12-19T12:07:49Z\nNo. of bitstreams: 2\nURN:NBN:fi:jyu-201612195158.pdf: 1586545 bytes, checksum: 20b07aced522e6506f9809ec12654494 (MD5)\nlicense.html: 4806 bytes, checksum: f41902054c50e65ab5ebe31e10ab91f1 (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2016-12-19T12:07:49Z (GMT). No. of bitstreams: 2\nURN:NBN:fi:jyu-201612195158.pdf: 1586545 bytes, checksum: 20b07aced522e6506f9809ec12654494 (MD5)\nlicense.html: 4806 bytes, checksum: f41902054c50e65ab5ebe31e10ab91f1 (MD5)\n Previous issue date: 2016", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "1 verkkoaineisto (87 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": "piirilevyt", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "metallit", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "kierr\u00e4tys", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Piirilevyjen koostumuksesta ja kierr\u00e4tyksest\u00e4", "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-201612195158", "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", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": 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