Search for dissertations about: "Sulphur oxidizing bacteria"

Found 4 swedish dissertations containing the words Sulphur oxidizing bacteria.

  2. 1. Developing and optimizing processes for biological nitrogen removal from tannery wastewaters in Ethiopia

    Author : Seyoum Leta; Gunnel Dalhammar; Jes Ia Cour Jenson; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Ecology; biological nitrogen and supphide removal; dntififying bacteria; nitrade-reducing; sulphuroxidizing bacteria; nitrate uptake rate; Ekologi; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

    Abstract : In Ethiopia industrial effluents containing high contents of organic matter, nitrogen and heavy metals are discharged into inland surface waters with little or no pre-treatment. Significant pollution concerns related to these effluents include dissolved oxygen depletion, toxicity and eutrophication of the receiving waters. READ MORE

  4. 2. Sulphur-Utilizing Microorganisms in Biotechnological Applications - Rubber Recycling and Vanadium Reduction

    Author : Katarina Bredberg; Bioteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Pyrococcus furiosus; Acidithiobacillus; microbial vanadium reduction; microbial detoxification; rubber recycling; devulcanization; Biotechnological desulphurization; waste rubber materials; Biotechnology; Bioteknik;

    Abstract : Biotechnological processes offer environmentally friendly and sometimes cost-effective alternatives to traditional chemical and mechanical methods. It is important to take advantages of the opportunities these processes provide to fulfil the demands and expectations of a future environmentally sustainable society. READ MORE

  5. 3. Evolution of annelid diversity at whale-falls and other marine ephemeral habitats

    Author : Helena Wiklund; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Whale-fall; cryptic species; Dorvilleidae; Chrysopetalidae;

    Abstract : When whales die and sink to the sea-floor, they provide a sudden, enormous food supply to organisms in the vicinity. At first, larger mobile scavengers remove the flesh, but also when only the bones remain, the whale-fall can still sustain macrofauna communities for several years. READ MORE

  6. 4. Microbial adhesion and surface modifications of sulphide minerals relevant to flotation and flocculation

    Author : Annamaria Vilinska; Ponisseril Somasundaran; 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 sulphide and oxide ores have been developed during the years and these processes have been adopted by certain mineral industries. READ MORE