Sökning: "mikrobiell nedbrytning"

Visar resultat 1 - 5 av 13 uppsatser innehållade orden mikrobiell nedbrytning.

  1. 1. Increase of biogas production by incorporating residual streams from agriculture

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Stephanie Fjäll; [2022]
    Nyckelord :Anaerobic digestion; Agricultural residue; Lignocellulosic biomass; Mechanical pretreatment; Biogas production; Biorefinery; Chemical engineering; Agriculture and Food Sciences; Technology and Engineering;

    Sammanfattning : To expand the biogas production in Region Västra Götaland (RVG), residual streams from the agricultural sector can function as a large-scale supplier of biomass. The production of biogas decreases the dependence of fossil fuels and the digestate that is formed can also be returned to the agricultural sector, creating a closed loop. LÄS MER

  3. 2. Odlade torvjordar och växthusavgång : effekter av pH, temperatur och vattenhalt

    Kandidat-uppsats, SLU/Dept. of Soil and Environment

    Författare :Lisette Nordgren; [2021]
    Nyckelord :odlad torvjord; pH; kalk; växthusgaser;

    Sammanfattning : Torvmarker utgör potentiella sänkor av växthusgaser (VHG) och täcker en betydande andel av Sveriges yta. Förra seklet dikades en stor del av markerna för odling m.m. vilket i nutid har lett till en ökande problematik med mikrobiell nedbrytning och torvförlust. LÄS MER

  4. 3. Groundwater flow modelling to address hydrogeological response of a contaminated site to remediation measures at Hjortsberga, southern Sweden

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Adam Johansson; [2020]
    Nyckelord :PCP; Groundwater modelling; Permeable reactive barrier; Hjortsberga sawmill; Earth and Environmental Sciences;

    Sammanfattning : Pentachlorophenol (PCP) is a chlorinated aromatic compound that was commonly used for treatment of wood against microbial degradation before it got banned in the 1970s. Due to its solubility in water, PCP is a common groundwater contaminant around old sawmills, for example near Hjortsberga in southern Sweden where this study was performed.. LÄS MER

  5. 4. Effects of 100 years of drainage on peat properties in a drained peatland forests in northern Sweden

    Master-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Mikaela Casselgård; [2020]
    Nyckelord :ash content; biodiversity; bulk density; carbon; climate; compaction; ditch; drainage; greenhouse gas emissions; groundwater level; isotopes; nitrogen; peatland; restoration;

    Sammanfattning : Natural peatlands provide a small but persistent long-term carbon (C) sink. However, within the last century their extent in Sweden has declined by about 1.5-2.0 million hectares due to drainage activities. LÄS MER

  7. 5. Multiple Substrate-Induced Respiration and Isothermal Calorimetry : Applicability in Risk Assessment of Contaminated Soil

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Caroline Wright; [2017]
    Nyckelord :Risk assessment; biological indicators; multiple substrate-induced respiration; MSIR; MicroRespTM; isothermal calorimetry; calorespirometric ratio; contamination; Cu; PAH; Riskbedömning; biologiska indikatorer; multipla substrat-inducerad respiration; MSIR; MicroRespTM; isotermisk kalorimetri; calorespirometric ratio; förorening; Cu; PAH;

    Sammanfattning : At present, soils face great threats. Consequences of human activities, such as climate change, acidification and contamination result in decreased soil health. This is a threat to human health and well-being, since our society is dependent on soil ecosystem services. LÄS MER