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[{"key": "dc.contributor.advisor", "value": "Tuhkanen, Tuula", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Hirvonen, Mikael", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Lindell, Kristiina", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2022-12-01T06:22:35Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2022-12-01T06:22:35Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2022", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/84167", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Maaper\u00e4n pilaantuminen on ihmisen toiminnasta aiheutuva ymp\u00e4rist\u00f6ongelma, joka voi olla haitallinen ymp\u00e4rist\u00f6n lis\u00e4ksi my\u00f6s ihmisten terveydelle. Maaper\u00e4n pilaantumisesta aiheutuvien haittojen takia pilaantuneiden alueiden kunnostaminen on t\u00e4rke\u00e4t\u00e4. T\u00e4ss\u00e4 tutkimuksessa selvitettiin turpeesta per\u00e4isin olevien humushappojen kyky\u00e4 tehostaa \u00f6ljyhiilivedyill\u00e4 pilaantuneen maaper\u00e4n kemiallista ja biologista kunnostamista. Tutkimuksen l\u00e4hestymistapana oli kokeellinen ty\u00f6, jossa \u00f6ljyhiilivedyill\u00e4 pilaantuneelle maa-ainekselle tehtiin panos- ja kolonnikoe sek\u00e4 kaksi vetyperoksidikoetta. Panos- ja kolonnikokeessa selvitettiin \u00f6ljyhiilivetyjen biohajoavuutta kemiallisen k\u00e4sittelyn j\u00e4lkeen. Kemiallisena k\u00e4sittelyn\u00e4 oli muokattu Fenton-menetelm\u00e4, jossa k\u00e4ytettiin humushappoja metalli-ionien kelatoimiseen ja siten est\u00e4m\u00e4\u00e4n vetyperoksidin liian nopeata hajoamista. Vetyperoksidikokeissa selvitettiin pelk\u00e4n vetyperoksidin vaikutusta maan\u00e4ytteen \u00f6ljyhiilivetypitoisuuden v\u00e4henemiseen sek\u00e4 humushappojen kyky\u00e4 hidastaa vetyperoksidin hajoamista \u00f6ljyhiilivedyill\u00e4 pilaantuneissa maan\u00e4ytteiss\u00e4. Panos- ja kolonnikokeen aikana \u00f6ljyhiilivetypitoisuudet v\u00e4heniv\u00e4t kemiallisen k\u00e4sittelyn ja biohajoamisen my\u00f6t\u00e4. Panoskokeessa \u00f6ljyhiilivetypitoisuudet v\u00e4heniv\u00e4t alle niille m\u00e4\u00e4ritellyn ohjearvon, mutta kolonnikokeessa \u00f6ljyhiilivetypitoisuudet j\u00e4iv\u00e4t ohjearvojen yl\u00e4puolelle. Humushappojen havaittiin hidastavan vetyperoksidin hajoamista \nkolonneissa tehdyiss\u00e4 kokeissa, mik\u00e4 voi selitt\u00e4\u00e4 \u00f6ljyhiilivetyjen heikompaa hajoamista lyhyen kontaktiajan kolonnikokeessa. Panoskokeessa humushappojen vaikutusta ei kuitenkaan ollut n\u00e4ht\u00e4viss\u00e4, sill\u00e4 \u00f6ljyhiilivetypitoisuus v\u00e4heni kaikissa n\u00e4ytteiss\u00e4 suunnilleen saman verran. Vetyperoksidi tehosti \u00f6ljyhiilivetyjen hajoamista, mutta se oli melko tasavertainen veden ja humusvalmisteiden kanssa. T\u00e4m\u00e4n tutkimuksen perusteella humusvalmisteiden kehitt\u00e4mist\u00e4 ei v\u00e4ltt\u00e4m\u00e4tt\u00e4 kannata suunnata\n\u00f6ljyhiilivedyill\u00e4 pilaantuneen maaper\u00e4n kunnostamiseen, mutta aihetta olisi kuitenkin hyv\u00e4 tutkia lis\u00e4\u00e4.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Soil contamination is an environmental problem caused by human activity and it can be harmful not only to the environment but also to human health. Due to harmful effects caused by soil contamination, it is important to remediate contaminated areas. In this thesis, the ability of peat derived humic acids to enhance the chemical and biological remediation of petroleum hydrocarbons \ncontaminated soil was investigated. The approach of the study was experimental work where a batch test, a column test and two hydrogen peroxide tests were performed for the petroleum hydrocarbons contaminated soil. In the batch and column test, the biodegradability of petroleum hydrocarbons after the chemical \ntreatment was investigated. The chemical treatment was a modified Fenton reaction where the humic acids were used to chelate metal ions and thus to prevent too rapid decomposition of hydrogen peroxide. In the hydrogen peroxide tests, the effect of the hydrogen peroxide alone to decrease the petroleum hydrocarbon concentration of the soil sample was investigated, as \nwell as the ability of the humic acids to reduce the decomposition of the hydrogen peroxide in soil samples contaminated with the petroleum hydrocarbons. During the batch and column test, the petroleum hydrocarbon concentrations decreased due to the chemical treatment and biodegradation. In the batch test, the petroleum hydrocarbon concentrations decreased below their guideline value, but in the column test the petroleum hydrocarbon concentrations remained above the guideline values. The humic acids were observed to reduce the decomposition of the hydrogen peroxide in the column experiments which may explain the weaker degradation of the petroleum hydrocarbons in the short \ncontact time column experiment. However, the effect of the humic acids was not possible to see in the batch test because the petroleum hydrocarbon concentration declined approximately the same amount in all samples. The hydrogen peroxide enhanced the decomposition of the petroleum hydrocarbons, but it was quite equal to water and humic substances. Based on this study, the development of humic substances should not necessarily focus on the remediation of petroleum hydrocarbons contaminated soil, but it would be good to do more research on this topic.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2022-12-01T06:22:35Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2022-12-01T06:22:35Z (GMT). No. of bitstreams: 0\n Previous issue date: 2022", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "43", "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": "kolonnikoe", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "panoskoe", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Humushappojen rooli muokatun Fenton-menetelm\u00e4n tehostajina \u00f6ljyhiilivedyill\u00e4 pilaantuneen maaper\u00e4n kunnostamisessa", "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-202212015434", "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": "Bio- ja ymp\u00e4rist\u00f6tieteiden laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Biological and Environmental Science", "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": "Ymp\u00e4rist\u00f6tiede", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Environmental science", "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": "40151", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "maaper\u00e4", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "vetyperoksidi", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "maaper\u00e4n saastuminen", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "biohajoaminen", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "puhdistus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "pilaantuminen", "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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