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dc.contributor.authorLaitinen Juha
dc.contributor.authorKoponen Hanna
dc.contributor.authorSippula Olli
dc.contributor.authorKorpijärvi Kirsi
dc.contributor.authorJumpponen Mika
dc.contributor.authorLaitinen Sirpa
dc.contributor.authorAatamila Marjaleena
dc.contributor.authorTissari Jarkko
dc.contributor.authorKarhunen Tommi
dc.contributor.authorOjanen Kari
dc.contributor.authorJokiniemi Jorma
dc.contributor.authorKorpinen Leena
dc.date.accessioned2017-10-13T12:06:00Z
dc.date.available2017-10-13T12:06:00Z
dc.date.issued2017
dc.identifier.urihttps://erepo.uef.fi/handle/123456789/4393
dc.description.abstractFly and bottom ashes are collected at power plants to reduce the environmental effects of energy production. However, handling the ashes causes health problems for operators, maintenance workers and truck drivers at the power plants. Hence, we evaluated ash loaders’ peak inhalation exposures to the chemical components of ash and diesel exhausts in open and closed ash loading stations at biomass-fuelled combined heat and power plants. We also carried out chemical and morphological analyses of the ashes to evaluate their health hazard potential in order to find practical technical measures to reduce workers’ exposure. On the basis of X-ray diffraction analyses, the main respirable crystalline ash compounds were SiO2, CaSO4, CaO, Ca2Al2SiO7, NaCl and Ca3Al2O6 in the fly ashes and SiO2, KAlSi3O8, NaAlSi3O8 and Ca2Al2SiO7 in the bottom ashes. The short-term exposure levels of respirable crystalline silica, inhalable inorganic dust, Cr, Mn, Ni and nitric oxide exceeded their Finnish eight hours occupational exposure limit values in the closed ash loading station. According to our observations, more attention should be paid to the ash-moistening process, the use of tank trucks instead of open cassette flatbed trucks, and the sealing of the loading line from the silo to the truck which would prevent spreading the ash into the air. The idling time of diesel trucks should also be limited, and ash loading stations should be equipped with exhaust gas ventilators. If working conditions make it impossible to keep to the OEL values, workers must use respirators and protect their eyes and skin.en
dc.language.isoENen
dc.publisherElsevier BVen
dc.relation.ispartofseriesCHEMOSPHEREen
dc.relation.urihttp://dx.doi.org/10.1016/j.chemosphere.2017.07.012en
dc.rightsCC BY-NC-ND https://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectPeak exposuresen
dc.subjectChemical components of ashen
dc.subjectMorphology of ashen
dc.subjectDiesel exhaustsen
dc.subjectAsh loadingen
dc.titlePeak exposures to main components of ash and gaseous diesel exhausts in closed and open ash loading stations at biomass-fuelled power plantsen
dc.description.versionfinal draften
dc.contributor.departmentYmpäristö- ja biotieteiden laitos / Toimintaen
uef.solecris.id48944437en
dc.type.publicationinfo:eu-repo/semantics/articleen
dc.rights.accessrights© Elsevier Ltd.en
dc.relation.doi10.1016/j.chemosphere.2017.07.012en
dc.description.reviewstatuspeerRevieweden
dc.format.pagerange183-191en
dc.relation.issn0045-6535en
dc.relation.volume185en
dc.rights.accesslevelopenAccessen
dc.type.okmA1en
dc.type.versioninfo:eu-repo/semantics/acceptedVersionen
uef.solecris.openaccessEi


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