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Showing result 1 - 5 of 37 essays matching the above criteria.

  1. 1. Biogas Potential in the North of Sweden : Inventory and Techno-Economic Assessment of Substrates for an Increased Biogas Production in Norrbotten

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Alma Fahlén Hammar; [2023]
    Keywords : Biogas; anaerobic digestion; AD; Norrland; bioenergy; fossil-free; chemical engineering; Chemistry; Technology and Engineering;

    Abstract : Great investments are planned in the north of Sweden the coming years, not the least in the county of Norrbotten where the projects collectively are referred to as the green transition due to the focus on fossil-free techniques. But to be able to secure a sustainable energy supply and reach the goal set by the member states of the European Union of a carbon dioxide neutral union in 2050 the production of alternative energy sources needs to intensify. READ MORE

  3. 2. Modelling the Effects of Climate Change on Future DOC Export to Lake Mälaren Using a Generalized Watershed Loading Functions (GWLF) Model

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Klara Lindqvist; [2022]
    Keywords : Hydrology; DOC; browning; climate change; drinking water production; Mälaren; Hydrologi; DOC; brunifiering; klimatförändringar; dricksvattenproduktion; Mälaren;

    Abstract : Browning of boreal freshwaters due to an increased export of terrestrial dissolved organic carbon (DOC) has been observed for some decennia. Drivers include recovery from acid deposition and changing climate and land cover. READ MORE

  4. 3. Assessment of the impact of the Black Coffee Twig Borer, Xylosandrus compactus infestation in Ugandan small-scale coffee gardens, and the potential of its suppression through repellence in conjunction with push-pull technology

    University essay from SLU/Dept. of Biosystems and Technology (from 130101)

    Author : Advaith Chakravarthy Shankarkumar; [2021]
    Keywords : coffee; smallholder farmers; livelihoods; BCTB; SplatVerb; repellents; attractants; push-pull; sustainable alternatives; perceptions; stakeholders;

    Abstract : Coffee production in Uganda is an important means of income for smallholder farmers and extensively supports rural livelihoods. It contributes to about 20- 30% of the annual export revenue of the country. Yet, coffee production is challenged by many factors. READ MORE

  5. 4. Impact of different catchments on the Brownification of Lake Bolmen

    University essay from Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap

    Author : Kaela Chileshe; [2020]
    Keywords : Brownification; dissolved organic carbon DOC ; Iron Fe ; water colour; landscapes; climate change;

    Abstract : Increased DOC and Fe concentrations from terrestrial landscapes has led to the browning of boreal surface waters. The negative societal and ecological impacts of brownification are increased cost of water purification, increased presences of algae and cyanobacteria, loss of ecosystem services and reduced recreational value. READ MORE

  6. 5. Factors Controlling Mercury Concentration in Rivers in the Mackenzie River Basin, Northwestern Canada

    University essay from Uppsala universitet/Luft-, vatten- och landskapslära

    Author : Jack Hewitt; [2020]
    Keywords : mercury; Mackenzie River Basin; regression; Canada; community-based water monitoring;

    Abstract : Mercury (Hg) in rivers and streams of the Mackenzie River Basin (MRB) presents a risk to fish, aquatic mammals, and humans. This thesis makes use of newly-released water quality data, including total mercury (THg) and dissolved mercury (DHg), gathered through the NWT-Wide Community-based Water Quality Monitoring (CBM) program. READ MORE