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[{"key": "dc.contributor.advisor", "value": "Pulkkinen, Katja", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Pirhonen, Juhani", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Pudas, Aaro", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2021-06-29T05:42:52Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2021-06-29T05:42:52Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2021", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/76887", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Mikrolevi\u00e4 voidaan k\u00e4ytt\u00e4\u00e4 useissa sovelluksissa, kuten biopolttoaineiden ja lis\u00e4ravinteiden raaka-aineena, v\u00e4riaineiden tuottajina, sek\u00e4 vedenpuhdistuksessa. Veden puhdistaminen vaatii levilt\u00e4 kyllin nopeaa ravinteiden ottoa vedest\u00e4 ja mielell\u00e4\u00e4n kyky\u00e4 siet\u00e4\u00e4 h\u00e4iri\u00f6it\u00e4 vedenlaadussa. Er\u00e4s tapa tehd\u00e4 levist\u00e4 parempia j\u00e4teveden k\u00e4sittelij\u00f6it\u00e4 on monilajikasvatus, jonka on todettu parantavan lev\u00e4viljelmien h\u00e4iri\u00f6nsietokyky\u00e4. T\u00e4ss\u00e4 ty\u00f6ss\u00e4 tutkin mikrolevien kyky\u00e4 poistaa ravinteita kiertovesiviljelm\u00e4n j\u00e4tevedest\u00e4. Aiemman tutkimustiedon perusteella odotin yht\u00e4 lev\u00e4\u00e4 sis\u00e4lt\u00e4vien viljelmien sitovan v\u00e4hemm\u00e4n ravinteita vedest\u00e4 kuin vastaavan monilajisen viljelm\u00e4n. Esikokeiden perusteella valitsin tutkimukseeni viherleviin kuuluvat Selenastrum sp. ja Monoraphidium griffithii -mikrolev\u00e4t. Tein yhteens\u00e4 kolme koetta, joista ensimm\u00e4isess\u00e4 lev\u00e4t kasvoivat elatusliuoksessa (WC), toisessa lev\u00e4t kasvoivat RAS-j\u00e4tevedess\u00e4 (WW), ja kolmannessa puolet levist\u00e4 kasvoi WC- ja puolet WW-liuoksessa. Levien yksin tai yhdess\u00e4 viljelyll\u00e4 ei ollut vaikutusta nitraattitypen m\u00e4\u00e4r\u00e4\u00e4n kokeen lopussa. Levien tilavuus kasvatuksen kokonaistilavuudesta muuttui osassa kokeista, kun levi\u00e4 kasvatettiin yhdess\u00e4. Monilajikasvatuksella oli vaikutusta levien tiheyteen ja kasvatusliuoksen fosfaattifosforin m\u00e4\u00e4r\u00e4\u00e4n kokeen lopussa. Fosfaattifosforia oli v\u00e4hemm\u00e4n monilajikasvatuksessa kuin yksin kasvatetussa Selenastrum sp. -lev\u00e4ss\u00e4. Monilajikasvatus voi siis vaikuttaa mikrolevien ravinteidenottoon, kasvatusten tiheyteen ja solujen tilavuuteen.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Industrially grown algae has found many new uses, ranging from coloring agents, such as astaxanthin, to biofuel. Algae may also be used to clean wastewater from nutrients. Previous studies suggest that algal polyculture can increase algal productivity and resilience against environmental disturbances. In my MSc thesis, I examined if using two algae species makes nutrient uptake from recirculating aquaculture system (RAS) wastewater more efficient than using algal monocultures. Based on preliminary results I chose two green microalgae species to be used in my experiments: Selenastrum sp. and Monoraphidium griffithii. In first experiment, I grew 12 cultures of algae for seven days in artificial growth medium. In the second and third experiments, I grew another two batches of 12 cultures for ten days each. In second experiment I used RAS wastewater (WW) and in the third experiment I grew six cultures in WC and other six in WW. There was no difference between duoculturing or monoculturing when it comes to the amount of nitrates at the end of the experiments. Duoculturing seems to have an effect on biovolume. Statistically significant results were observed between algae density and which culture (mono- or duoculture) was used. At the end of second experiment, where duoculture removed statistically significantly more phosphorus from WW than Selenastrum sp. monoculture. This result suggest that duoculturing does, indeed affect nutrient uptake of microalgae as well as density and biovolume.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Miia Hakanen (mihakane@jyu.fi) on 2021-06-29T05:42:52Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2021-06-29T05:42:52Z (GMT). No. of bitstreams: 0\n Previous issue date: 2021", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "43", "language": "", "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": "kiertovesiviljely", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "monilajisuus", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Kahden lajin kasvatuksen vaikutus mikrolevien kykyyn poistaa ravinteita kalojen kiertovesikasvatuksen j\u00e4tevedest\u00e4", "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-202106294077", "language": "", "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": "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": "Akvaattiset tieteet", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Aquatic sciences", "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": "4012", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "fosfaatit", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "mikrolev\u00e4t", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "nitraatit", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
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