Sökning: "Mekanisk blandning"

Visar resultat 1 - 5 av 13 uppsatser innehållade orden Mekanisk blandning.

  1. 1. Experimental Study of Flow Fields in Moving Bed Biofilm Reactors

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Shea Nee Chew; [2023]
    Nyckelord :Moving bed biofilm reactors; Biofilm carriers; Mechanical mixing; Mixer configurations; Carrier mixing; Biofilmsreaktorer med rörlig bädd; Biofilmsbärare; Mekanisk blandning; Blandarkonfigurationer; Bärarblandning;

    Sammanfattning : With the rise in global energy prices, as well as energy consumption being the largest source of greenhouse gas emissions, biofilm-based systems utilized for wastewater treatment, such as moving bed biofilm reactors (MBBRs), have grown in popularity for their lower energy consumption compared to conventional activated sludge processes. However, this technology requires large amounts of energy to constantly distribute and suspend its biofilm carrier within the reactor by either aerators or mechanical mixers. LÄS MER

  3. 2. Development of a System to Quantify Coking in Rocket Nozzle Cooling Channels

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Adam Parks; [2022]
    Nyckelord :methane; pyrolysis; reusable; carbon deposition; ozone cleaning; rocket engines; cooling channels; borescope; metan; pyrolys; återanvändbar; koldeposition; ozon-rening; raketmotorer; kylkanaler; boreskop;

    Sammanfattning : Liquid methane is becoming an increasingly attractive rocket propellant due to its high performance characteristics and potential to support in-situ resource utilisation. Methane, however, when heated, can thermally decompose in a process known as pyrolysis. LÄS MER

  4. 3. Removal Characteristics of Fibrous and Particulate Microplastics : A Study of the Effectiveness of Coagulation-Flocculation- Sedimentation

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Amrith Kumar; [2022]
    Nyckelord :Coagulation; flocculation; jar test; microplastics; sedimentation; water treatment; Burktest; flockning; koagulering; mikroplaster; sedimentering; vattenrening;

    Sammanfattning : The rapid proliferation of microplastics (MPs) over the last few decades have raised alarms about the major environmental and health impacts posed by this anthropogenic source. The widespread propagation and transport of MP particles in water sources have accelerated the need to study the eco- toxicological impacts as well as the efficacy of various removal mechanisms from these critical water sources. LÄS MER

  5. 4. Reaching Net-Zero in the Chemical Industry - A study of roadmaps for reducing greenhouse gas emissions

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Miljö- och energisystem

    Författare :Ylva Kloo; [2022]
    Nyckelord :Chemical industry; roadmaps; scenarios; net-zero emissions; recycling; biobased feedstock; CCU; CCS; electrification; efficiency improvements; framework conditions; Technology and Engineering;

    Sammanfattning : Following the decision set by the EU of a net-zero greenhouse gas emission target for 2050, several industries have made roadmaps for how these reductions will be achieved. This thesis investigates the chemical industry roadmaps in order to assess how they envision their role in reaching the EU target. LÄS MER

  7. 5. Från textil soldatutrustning till garn : En studie av möjligheter till mekanisk återvinning och garnspinning av klädesplagg från FMV

    Kandidat-uppsats, Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Författare :Monica Ha; Johanna Bångsbo; [2020]
    Nyckelord :mechanical recycling; recycled fibers; yarn spinning; open-end spinning; shredding; rotor spinning; friction spinning; short fibers; Mekanisk återvinning; återvunna fibrer; garnspinning; open-end spinning; rivning; rotorspinning; friktionsspinning; korta fibrer;

    Sammanfattning : Varje år kasserar Försvarets materielverk (FMV) en stor mängd av soldatutrustning av textil. Den textila soldatutrustningen kasseras med anledning att den inte längre går att laga eller har förlorat sin funktion och skickas därmed till förbränning. LÄS MER