Search for dissertations about: "Acidophilic"

Showing result 1 - 5 of 10 swedish dissertations containing the word Acidophilic.

2. 1. Growth and survival of Acidithiobacilli in Acidic, metal rich environments

   Author : Stefanie Mangold; Mark Dopson; Axel Schippers; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : Acidithiobacilli are acidophilic microorganisms that play important roles in many natural processes such as acidification of the environment, influencing metal mobility, and impacting on global sulfur and iron cycles. Due to their distinct metabolic properties they can be applied in the industrial extraction of valuable metals. READ MORE

4. 2. Physiology and Genetics of Acidithiobacillus species : Applications for Biomining

   Author : Olena Rzhepishevska; Mark Dopson; Wolfgang Sand; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Microbiology; Mikrobiologi;

   Abstract : Bacteria from the genus Acidithiobacillus are often associated with biominingand acid mine drainage. Biomining utilises acidophilic, sulphur and ironoxidising microorganisms for recovery of metals from sulphidic low grade oresand concentrates. READ MORE

5. 3. Structure and function of microbial communities in acid sulfate soil and the terrestrial deep biosphere

   Author : Xiaofen Wu; Mark Dopson; Ricardo Amils; Linnéuniversitetet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; molecular phylogeny; acid sulfate soils; metal; acidophiles; deep biosphere; oligotrophy; biofilm formation; metagenome; binning; metabolism; Mikrobiologi; Microbiology;

   Abstract : This thesis describes the use of different DNA sequencing technologies to investigate the structure and function of microbial communities in two extreme environments, boreal acid sulfate soil and the terrestrial deep biosphere.The first of the two investigated environments was soils containing un-oxidized metal sulfides that are termed ‘potential acid sulfate soil’ (PASS) materials. READ MORE

6. 4. Bacteria-sulfide mineral interactions with reference to flotation and flocculation

   Author : Annamaria Vilinska; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mineralteknik; Mineral Processing;

   Abstract : Biological processes have been attracting attention in mineral processing industry due to their lower operating costs, environmental acceptability and flexibility in adaptation. Bio-hydrometallurgical methods to treat various sulfide and oxide ores have been developed during the years and these processes have been adopted by certain industries. READ MORE

7. 5. Microbial adaptations and controlling mechanisms of surface-associated microhabitat heterogeneity in aquatic systems

   Author : Jan Torsten Jeske; Stefan Bertilsson; Annelie Wendeberg; Andreas Schramm; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; microbial habitat heterogeneity; Biology with specialization in Limnology; Biologi med inriktning mot limnologi;

   Abstract : Habitat heterogeneity is a driving factor for speciation and ecosystem functioning and is well studied in macro-ecology. Yet our understanding of microbial adaptations, and governing processes is incomplete. READ MORE