Essays about: "reaktorer"

Showing result 21 - 25 of 41 essays containing the word reaktorer.

  1. 21. Stabilizing biogas processes at high ammonia : effects of acetate pulse-feeding on the microbial population

    University essay from SLU/Department of Molecular Sciences

    Author : Oscar Dolk; [2020]
    Keywords : biogas; anaerobic digestion; ammonia inhibition; acetate enrichment;

    Abstract : This study investigated the problem of ammonia inhibition in biogas reactors, commonly occurring when protein rich substrates are used in anaerobic digestion processes. Ammonia inhibition is one of the foremost causes of failure in anaerobic digestion, leading to process instability, with symptoms commonly expressed as; reduction in biogas produced, decreased methane content in the gas and accumulation of volatile fatty acids. READ MORE

  3. 22. Investigation of the siting process of Swedish nuclear power plants using GIS

    University essay from KTH/Geoinformatik

    Author : Daniel Wollberg; Egil Morast; [2020]
    Keywords : GIS; Multi-criteria analysis; Nuclear power; Sweden;

    Abstract : In order to find the optimal placement for a nuclear power plant (NPP) many different factors have to be taken into consideration. Choosing the wrong location could result in higher construction costs and/or taking avoidable risks. GIS can be used to compare different spatial criteria efficiently. READ MORE

  4. 23. Effect of biofilm thickness and carrier type on the performance of anaerobic moving bed biofilm reactors (AnMBBRs)

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Astrid Hermansson; [2020]
    Keywords : Anaerobic; wastewater treatment; AnMBBR; MBBR; biofilm thickness; carrier; organic removal; water engineering; environmental engineering; avloppsteknik; vattenförsörjningsteknik; Technology and Engineering;

    Abstract : The anaerobic moving bed biofilm reactor (AnMBBR) is a wastewater treatment process that has shown effective for the treatment of industrial wastewaters. As the AnMBBR is a biofilm process, nutrients, products, etc. must be transported through the biofilm. The thickness of the biofilm may, therefore, impact the process. READ MORE

  5. 24. Sustainability assessment of potential wastewater treatment techniques in Tupiza, Bolivia

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Johanna Burström; [2020]
    Keywords : MCA; wastewater treatment; sustainable sanitation; Bolivia; stabilisation ponds; anaerobic reactors; constructed wetland; alkaline treatment of sludge; ammonia treatment of sludge; MCA; avloppsrening; hållbara VA-lösningar; Bolivia; stabiliseringsdammar; anaerobiska reaktorer; anlagd våtmark; alkalin slambehandling; slambehandling med ammoniak; Análisis multicriterio; tratamiento de aguas residuales; saneamiento sostenible; Bolivia; estanques de estabilización de desechos; reactores anaeróbicos; humedales artificiales; tratamiento de lodo con cal; tratamiento de lodo con urea;

    Abstract : Aiming for sustainable sanitation systems can provide benefits among a vast range of Sustainable Development Goals. In this study the sustainability of potential options for renovating or upgrading thewastewater treatment plant in Tupiza, a rapidly growing city in theSouthern highlands of Bolivia, was evaluated. READ MORE

  6. 25. Design and Analysis of Continuous Virus Inactivation Reactors in Biopharmaceutical Production

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Hanna Danielsen; [2020]
    Keywords : Chemical engineering; Kemiteknik; Virus inactivation; Chromatography; Technology and Engineering;

    Abstract : The biopharmaceutical industry is replacing the current batch process with a continuous one and an essential step in the downstream process is the virus inactivation (VI). The challenge with a continuous VI reactor is to generate a narrow residence time distribution (RTD), while ensuring a precise incubation time. READ MORE