Sökning: "ultrafiltration"

Visar resultat 1 - 5 av 67 avhandlingar innehållade ordet ultrafiltration.

1. 1. Process Design for Ultrafiltration of Complex Process Streams

   Författare :Anna-Karin Nordin; Avdelningen för kemiteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bleach plant effluent; Ultrafiltration; process design; optimization;

   Sammanfattning : Considerable effort has been dedicated over the years to model and simulate the ultrafiltration process. Most approaches are theoretical and therefore not applicable to industrial process streams. When treating such solutions, a combination of experiments and simulations is needed. LÄS MER

3. 2. Extraction of Lignin from Kraft Cooking Liquor by Ultrafiltration

   Författare :Ola Wallberg; Avdelningen för kemiteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lignin; Chemical technology and engineering; cooking liquor; kraft black liquor; Kemiteknik och kemisk teknologi; Ultrafiltration;

   Sammanfattning : Lignin is a potential biofuel which can be extracted from kraft cooking liquor. Lignin can also prove valuable as a speciality chemical. By extracting lignin potential economical revenue can be gained by pulp mills, as well as technical benefits such as easier delignification and bleaching. LÄS MER

4. 3. Investigations on Membrane Fouling and Cleaning in Ultrafiltration Processes in Lignocellulosic Biorefineries

   Författare :Gregor Rudolph; Avdelningen för kemiteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Membrane fouling; Membrane cleaning; Ultrafiltration; Online monitoring; Galactoglucomannan; Wood extractives; QCM-D; Lignocellulosic biomass; pulp and paper;

   Sammanfattning : The current fossil-based economy must be transformed into a bio-based circular economy. A cornerstone of this transformation is the conversion of pulp and paper mills into lignocellulosic biorefineries that allow not only the production of pulp, paper, and electricity, but also novel biochemicals. LÄS MER

5. 4. Climate Change Adaption of Waterworks for Browning Surface Waters : Nano- and Ultrafiltration Membrane Applications for Drinking Water Treatment

   Författare :Alexander Keucken; Avdelningen för Teknisk vattenresurslära; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Natural organic matter NOM ; drinking water; ultrafiltration; nanofiltration; autopsy; modelling;

   Sammanfattning : Natural organic matter (NOM) is found in all surface, ground, and soil waters. During recent decades, reports worldwide show a continuing increase in the color and NOM of the surface water, which has an adverse effect on drinking water purification. For several practical and hygienic reasons, the presence of NOM is undesirable in drinking water. LÄS MER

7. 5. Safe drinking water in a changing environment : Membrane filtration in a Swedish context

   Författare :ANGELICA LIDÉN; Avdelningen för Teknisk vattenresurslära; []
   Nyckelord :Boreal lakes; Drinking water; Nanofiltration; Natural organic matter; Ultrafiltration;

   Sammanfattning : Surface water is vital for Swedish drinking water supply. In the past decades, a trend of increased total organic carbon (TOC) concentrations has led to higher consumption of coagulants in drinking water treatment, and has pushed the levels in the outgoing water closer to the allowed levels of TOC. LÄS MER