Essays about: "fertiliser"

Showing result 21 - 25 of 55 essays containing the word fertiliser.

  1. 21. Environmental Impact Analysis of Flax Fibre Cultivation for Composite Reinforcement

    University essay from Mittuniversitetet/Avdelningen för ekoteknik och hållbart byggande

    Author : Elin Jacobsson; [2018]
    Keywords : flax fibre; life cycle assessment; reinforcement; environmental impact assessment;

    Abstract : Searching for environmentally sustainable alternatives for reinforcement of composite materials, flax fibre has one of the most promising potentials due to its desired mechanical properties. The fact that flax is a bio-material, in contrast to conventional synthetic fibres, does not ensure a less environmental impact. READ MORE

  3. 22. Farmers not Farming? An empirical study of the elimination of the mandatory set-aside policy in the EU.

    University essay from Göteborgs universitet/Graduate School

    Author : Amanda Karlsson; [2017-07-28]
    Keywords : Agriculture; Common Agricultural Policy; set-aside policy; the Health Check of the CAP; FADN data; difference-in-difference;

    Abstract : This thesis evaluates European farmers which were subject to mandatory set-aside entitlements for many years. Mandatory set-aside of land, required farmers to leave arable land out of production to be eligible for subsidies. READ MORE

  4. 23. Urine nitrification: Start-up with high strength urine

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Axel Olsson; [2017]
    Keywords : high strength; start-up; stabilisation; urine; nitrification; water engineering; environmental engineering; avloppsteknik; Technology and Engineering;

    Abstract : The importance of recycling nutrients becomes more important as the finite resources starts running out, and recycling of urine nutrients is an important factor in developing a sustainable society that takes advantage of nutrients already existing in the system. Urine only represents one percent of the domestic wastewater volumetric flow, but contains 80 % of the nitrogen, 50 % of the phosphorus and 60 % of the potassium of the total wastewater. READ MORE

  5. 24. Challenges during start-up of urine nitrification in an MBBR

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Ellen Ascard Edefell; [2017]
    Keywords : Urine; source-separation; urine stabilisation; nitrogen recovery; nitrification; moving bed biofilm reactor; MBBR; water engineering; environmental engineering; vattenförsörjningsteknik; avloppsteknik; Technology and Engineering;

    Abstract : Nitrogen and phosphorous compounds are secreted by humans and treated in wastewater treatments plants. These substances are also found in agricultural fertilisers and needed for plant growth. Nutrient recycling is limited in conventional treatment systems and valuable products are lost. READ MORE

  6. 25. sSWOT-analysis of the introduction and usage of faecal sludge as fertiliser in agriculture in the Western Cape Province, South Africa

    University essay from KTH/Industriell ekologi

    Author : Felicia Frise; Anna Ringström; [2017]
    Keywords : ;

    Abstract : For future generations, securing nutrients and minimising the biochemical flows are significant challenges for humanity. Due to this, it is important to develop new phosphorous recovery methods from alternative sources to secure food production, reach sustainable development and circular economy. READ MORE