Tarpeellinen salpietari

Kirjallisuusarvostelu

Yksityismetsänomistajien mielipiteet metsänkäsittelystä Pohjois-Suomessa

Seloste artikkelista: Hallikainen, V., Hyppönen, M., Pernu, L. & Puoskari, J. / Family forest owners' opinions about forest management in northern Finland. Silva Fennica 44 (2010) : 2, 363-384.

Pohjoismaista tutkimusyhteistyötä kasvatuksen ja koulutuksen sukupuolikysymyksistä

Pohjoismaisessa koulutustutkimuksen verkoston NERA:n yhteydessä toimii myös sukupuoleen ja koulutukseen keskittyvä verkosto, Gender and Education network.

Munkki, rööki ja inttistoorit

Kirjallisuusarvostelu

Sulfuric acid - glucose separation using mixed-recycle steady state recycling chromatography

Batch chromatography is a widely used separation technique in a variety of fields meeting difficult separations. Several technologies for improving the performance of chromatography have been studied, including mixed-recycle steady state recycling (MR-SSR) chromatography. Design of MR-SSR has been commonly limited on 100 % purity constraint cases and empirical work. In this study a predictive design method was used to optimize feed pulse size and design a number of experimental MR-SSR separations for a solution of 20 % sulfuric acid and 100 g/L glucose. The design was under target product fraction purities of 98.7 % for H2SO4 and 95 % for glucose. The experiments indicate a maximum of 59 % increase in sulfuric acid productivity and 82 % increase for glucose when compared to corresponding batch separation. Eluent consumption was lowered by approximately 50 % using recycling chromatography. Within this study the target purities and yields set in design were not completely met, and further optimization of the process is deemed necessary.