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Showing result 21 - 25 of 95 essays matching the above criteria.

  1. 21. Microwave Heat Treatment of Black Liquor for the Degradation of Hemicellulose

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Maja Rydgård; [2020]
    Keywords : lignin; biofuel; black liquor; heat treatment; microwave heating; chemical engineering; kemiteknik; Technology and Engineering; Chemistry;

    Abstract : The largest use of fossil petroleum is the production of fuels. Hence, finding sustainable alter-natives is an important step to reduce the emissions of greenhouse gases. One such alternative is to produce fuel from biomass, such as waste products from agriculture and the forest indus-try. READ MORE

  3. 22. Improvement of energy efficiency of the auxiliary steam system and rock-cavern storage at Karlshamnverket

    University essay from KTH/Energiteknik

    Author : Magnus Hammarling; Hugo Johansson; [2020]
    Keywords : ;

    Abstract : Goals: Increase the efficiency in the operation of the auxiliary boilers, and the utilization of the rock-cavern storage under a tecno- economic lens. Including in the work is modification and improvement of the plants documents regarding the planning of consumers in the auxiliary steam system. READ MORE

  4. 23. Pulse Electric Field as a Pre-treatment Method of Wastewater Sludge prior to Anaerobic Digestion

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Milton Matilde; [2020]
    Keywords : PEF; AD; biogas yield; sludge pre-treatment; water engineering; environmental engineering; avloppsteknik; vattenförsörjningsteknik; Technology and Engineering;

    Abstract : This work analyzed the impact caused by different intensities of Pulsed Electric Fields (PEF) pre-treatment on the biogas production from small-scale anaerobic digesters of wastewater sludge under thermophilic conditions. PEF technology consists of passing the substrate through an electric field which generates a potential difference across the cells, resulting in electroporation. READ MORE

  5. 24. "No country would find 173 billion barrels of oil in the ground and just leave them there" : Examining the hegemony of fossil fuels in the Trudeau government's discourse on the Trans Mountain Pipeline expansion project

    University essay from Lunds universitet/Humanekologi

    Author : Naima Kraushaar-Friesen; [2019]
    Keywords : Trans Mountain pipeline; Canada; fossil-fuel hegemony; climate change; political ecology; carbon lock-in; Critical Discourse Analysis; Social Sciences;

    Abstract : As the world’s fifth largest oil producer, and holder of the third largest proven oil reserves, Canada is poised to significantly impact future global carbon emissions. The present government, under the leadership of Liberal Prime Minister Justin Trudeau, is seeking to simultaneously position itself as a global climate leader while supporting the exploitation of Canada’s extensive bitumen oil reserves. READ MORE

  6. 25. Vilka aspekter är viktiga att beakta vid byggnation av maskinhall : en enkätstudie hos lantbrukare

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

    Author : Christian Esbjörnsson; William Montgomery; [2019]
    Keywords : enkätundersökning; oljeavskiljare; produktionsgrenar; solceller; verkstad; värmesystem; maskinförvaring; totalentreprenad;

    Abstract : I samband med att dagens produktionsgrenar inom lantbruk blir omfattande och även gårdarnas maskiner blir större så krävs det byggnader som är anpassade till det, vilket inte brukar vara fallet. De maskinhallar som byggdes förr är alldeles för låga i tak och för små. READ MORE