Kurkistus akateemisen opettajankoulutuksen lyhyeen historiaan : Suomen Kouluhistoriallisen Seuran yleisöseminaari Helsingissä 9.12.2011

Teema: akateeminen opettajankoulutus.

Kansallisesta selvitystilasta kansainvälisiin parrasvaloihin

Teema: akateeminen opettajankoulutus.

Voiko ihmettä selittää? : Suomen PISA-menestyksen taustoitusta

Teema: akateeminen opettajankoulutus.

Mikä tekee opettajankoulutuksesta akateemisen?

Teema: akateeminen opettajankoulutus.

Pysähtyneisyyden aika : aineenopettajakoulutuksen akateeminen taival

Teema: akateeminen opettajankoulutus.

CO2 sparging for improving the filtration properties of iron ore slurries

Iron ore treatment processes are usually continuous and high tonnage and filtration equipment has to meet these requirements. In magnetite (Fe3O4) treatment process continuous rotary disc filters are often used for filtration. Carbon dioxide (CO2) treatment is a fairly novel and un-known filtration enhancing process. The interest to use CO2 is quite high because CO2 is a greenhouse gas that is abundant, readily available and capture and use of CO2 would be environmentally beneficial. The focus of this thesis was to investigate if CO2 could be used to enhance the filtration of magnetite with ceramic disc filter. Previous studies have suggested that CO2 could be used to enhance the filtration properties of different iron ores thus increasing the filtration capacity. In the literature part, the basic theory of filtration and the particle properties affecting filtration were discussed. The basic steps of a typical ore treatment process were presented. The reasons why CO2 might enhance the filtration properties of different ores were investigated. A literature survey of earlier studies of CO2 addition as a filter aid was presented and the basic chemical properties and reactions of CO2 were also discussed. The experimental part was done at the LUT Laboratory of Separation Technology using different magnetite samples from the industry. The filtration experiments indicated that CO2 had a positive influence on the filtration properties of magnetite slurry. Zeta potential of untreated and CO2 treated magnetite was measured and CO2 treated magnetite had lower zeta potential values than the untreated magnetite. The filtration capacity was increased while the cake moisture levels were only slightly increased.

Uraa uurtava teos tyttöjen käsityökasvatuksesta

Kirjallisuusarvostelu

Koulutuskulttuuriset siirtymät avaavat näkökulmia koulutuksen periytyvyyteen

Lectio praecursoria kasvatustieteen väitöskirjaan Äidiltä tyttärelle : koulutuskulttuurisia siirtymiä neljässä sukupolvessa, Turun yliopistossa 28.9.2012.