Sökning: "Salt extraction"

Visar resultat 1 - 5 av 28 avhandlingar innehållade orden Salt extraction.

1. 1. Characterization of Raw Materials for Salt Extraction from Lake Katwe, Uganda

   Författare :Hillary Kasedde; Stefan Jonsson; Baohua Zhu; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Lake Katwe; salt extraction; brine; evaporites; characterization; PHREEQC;

   Sammanfattning : Uganda is well endowed with economic quantities of salt evident in the interstitial brines and evaporite deposits of Lake Katwe, a closed saline lake located in the western branch of the great East African rift valley. Currently, rudimentally methods of salt mining based on solar evaporation of brine continue to be used for salt extraction at the lake. LÄS MER

3. 2. Extraction of Metal Values : Thermodynamics of Electrolyte Solutions and Molten Salts Extraction Process

   Författare :Xinlei Ge; Seshadri Seetharaman; Katsunori Yamaguchi; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrolyte solutions; activity coefficient; osmotic coefficient; freezing point depression; boiling point elevation; Materials science; Teknisk materialvetenskap;

   Sammanfattning : Over the past centuries, a number of process routes for extraction of metal values from an ore or other resources have been developed. These can generally be classifiedinto pyrometallurgical, hydrometallurgical or electrometallurgical routes. LÄS MER

4. 3. Towards the Improvement of Salt Extraction from Lake Katwe Raw Materials in Uganda

   Författare :Hillary Kasedde; Pär Jönsson; Anders Tilliander; Eric Forssberg; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Lake Katwe; salt extraction; brine; evaporites; saltpan; characterization; evaporation - crystallization; solubility; Pitzer ’s ion - interaction model; PHREEQC software; dissolution kinetics; Avrami model.;

   Sammanfattning : Uganda is well endowed with economic quantities of mineral salts present in the interstitial brines and evaporite deposits of Lake Katwe, a closed (endorheic) saline lake located in the western branch of the great East African rift valley. Currently, rudimentally and artisanal methods continue to be used for salt extraction from the lake raw materials. LÄS MER

5. 4. Polymer extraction and utilization of brown algal biomass

   Författare :Martin Sterner; Ulrica Edlund; Fredrik Gröndahl; Marguerite Rinaudo; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Algae; Saccharina latissima; alginate; brown seaweed; extraction; filament; chelation; gel; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Sammanfattning : Aquaculture is a field with a world changing potential. The areas at sea are enormous and aquatic cultivations impact both the environment and local ecology far less than land based cultivations. In the realm of algae, abundancies exists of nutrition, water and accessible sunlight, but there is constant shortage of places to dwell. LÄS MER

7. 5. Improving selectivity in protein extraction by subtle interactions and environmental changes

   Författare :Sheryl Fernandes; Bioteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Difference Spectroscopy; Circular dichroism; Biotechnology; Bioteknik; Chemical technology and engineering; Kemiteknik och kemisk teknologi; Fluorescence spectroscopy; Metal ions; Cibacron blue; Polyvinylpyrrolidone; Polyethylene glycol; Triton X-114; His 6 tag; Cold-active ß-lactamase; Cold-active ß-galactosidase; Lactate dehydrogenase; Cutinase; Affinity Extraction; Conformational change; Partial Denaturation; Molecular interaction; Aqueous two-phase systems; Detergent foam;

   Sammanfattning : The challenges for efficient bioprocesses lie in developing and adapting further current technologies or in creating innovative separation technologies. The thesis is based on the studies on protein recovery from crude feedstocks by extraction in aqueous two-phase systems and detergent foam, respectively. LÄS MER