Essays about: "wood degradation"

Showing result 11 - 15 of 48 essays containing the words wood degradation.

  1. 11. Burning the woods and flooding the slums : examining the socio-economic and environmental burden of wood charcoal in Dar es Salaam, Tanzania

    University essay from Lunds universitet/LUCSUS

    Author : Laura Maja Stenbæk Fløytrup; [2020]
    Keywords : Cooking fuels; Energy Justice; Supply chains; Good Governance; Sub-Saharan Africa; Sustainability Science; Social Sciences;

    Abstract : Wood charcoal is the main source of energy for cooking in urban Sub-Saharan Africa. It is widely known that charcoal production causes numerous environmental impacts, such as deforestation and environmental degradation. READ MORE

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

    University essay from Lunds universitet/Geologiska institutionen

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

    Abstract : 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.. READ MORE

  4. 13. 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

  5. 14. Study of a valorisation process forbiomass industrial waste involvingacid cooking and enzymatichydrolysis

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Nicolas Brunet; [2020]
    Keywords : ;

    Abstract : Lignocellulosic biomass has potential to chip in the chemical and biofuels supplies in future societies,even though lignocellulose is a recalcitrant structure that has to be treated in several steps. After theirproper life cycle, wood-derived materials such as particleboards have few outcomes today apart fromenergy recovery for heat production. READ MORE

  6. 15. The Effect of Calcium on Delignification in Kraft Cooking of Eucalyptus

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Eashwara Raju Senthilkumar; [2019]
    Keywords : Delignification; Carbohydrates; Lignin; Yield; Calcium; Delignifiering; Kolhydrater; Lignin; Utbyte; Kalcium;

    Abstract : Delignifiering under sulfat koket innefattar både kemisk nedbrytning och fysisk upplösning av lignin, för vilket närvaron av oorganiska salter, oorganiska anjoner samt oorganiska katjoner (sammantaget benämnda som "Non-process elements", NPEs på engelska) kan ha inverkan på delignifieringens hastighet. Tidigare studier har funnit att ved med högt kalciuminnehåll är svårdelignifierad och att kalcium har potentiell inverkan på ligninlöslighet och kappatal. READ MORE