Search for dissertations about: "Biogas utilisation"

Showing result 1 - 5 of 17 swedish dissertations containing the words Biogas utilisation.

  2. 1. Bioprocessing of Recalcitrant Substrates for Biogas Production

    Author : Maryam M Kabir; Högskolan i Borås; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; anaerobic digestion; biogas; lignocellulose; wool; keratin; pre-treatment; co-digestion; dry digestion; economic evaluation; Resursåtervinning; Resource Recovery;

    Abstract : The application of anaerobic digestion (AD) as a sustainable waste management technology is growing worldwide, due to high energy prices as well as increasingly strict environmental regulations. The growth of the AD industry necessitates exploring new substrates for their utilisation in AD processes. READ MORE

  4. 2. Chemical Speciation of Sulfur and Metals in Biogas Reactors : Implications for Cobalt and Nickel Bio-uptake Processes

    Author : Sepehr Shakeri Yekta; Bo Svensson; Ulf Skyllberg; Åsa Danielsson; Charles Banks; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biogas; Anaerobic digestion; Chemical speciation; bio-uptake; Sulfur; Iron; Cobalt; Nickel; Biogas; Anaerob nedbrytning; Kemisk speciering; Bio-upptag; Svavel; Järn; Kobolt; Nickel;

    Abstract : A balanced supply of micronutrients, including metals such as iron (Fe), cobalt (Co), and nickel (Ni), is required for the efficient and stable production of biogas. During biogas formation, the uptake of micronutrient metals by microorganisms is controlled by a complex network of biological and chemical reactions, in which reduced sulfur (S) compounds play a central role. READ MORE

  5. 3. Intensification of the biogas process by improved process monitoring and biomass retention

    Author : Lovisa Björnsson; Miljö- och energisystem; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; BOD; hydrogen; on-line; monitoring; biofilm; anaerobic digestion; biogas; Biotechnology; Bioteknik;

    Abstract : The utilisation of energy in the form of biogas is one of the environmentally sound alternatives available using renewable energy sources. Biogas is formed by anaerobic degradation of organic material, the main consistuent being energy-rich methane. READ MORE

  6. 4. Valorisation of fish waste biomass through recovery of nutritional lipids and biogas

    Author : Betty Mbatia; Bioteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; by-products; value addition; EPA; DHA; PUFA; biogas;

    Abstract : Commercial fish catch in Eastern Africa is dominated by Nile Perch. Of the fish that is processed for human consumption, 30-40% is wasted. Currently, these wastes are not fully utilized; they are sold off at low price, converted to low valued products or left to decompose leading to environmental pollution and wastage of bioresource. READ MORE

  7. 5. Two-Stage Conversion of Land and Marine Biomass for Biogas and Biohydrogen Production

    Author : Valentine Nkemka; Bioteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; steam pretreatment; dry digestion; biogas; biohydrogen; Caldicellulosiruptor saccharolyticus; cadmium; anaerobic digestion;

    Abstract : The replacement of fossil fuels by renewable fuels such as biogas and biohydrogen will require efficient and economically competitive process technologies together with new kinds of biomass. A two-stage system for biogas production has several advantages over the widely used one-stage continuous stirred tank reactor (CSTR). READ MORE