Essays about: "fertiliser"

Showing result 11 - 15 of 55 essays containing the word fertiliser.

  1. 11. Design and evaluation of black soldier fly larvae and frass compost separator

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Daniel Ismail Eriksson; [2021]
    Keywords : Sustainable Development; Mechanical Engineering; Black Soldier Fly Larvae; Hermetia Illucens; Mechanical Screening; Vibrating Sieve;

    Abstract : Black Soldier Fly Larvae (BSFL) composting is a treatment procedure that generates two products: frass compost and BSFL. These products have different uses. BSFL can be used as animal feed and frass compost as soil fertiliser, and they need to be separated after the composting procedure has been finished. READ MORE

  3. 12. Opportunities for increased nutrient recovery at centralised wastewater treatment plants through urine separation

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Hanna Gustavsson; [2021]
    Keywords : Nutrient recovery; urine separation; magnesium ammonium phospahte; MAP; ammonium sulphate; AMS; and DHI s WEST;

    Abstract : Municipal wastewater contains a significant amount of nutrients such as phosphorus (P) and nitrogen (N). Therefore have the interest of recovering these nutrients at wastewater treatment plants (WWTP) increased. Nutrient recovery would generate revenue for the WWTP, as it is possible to sell the products as fertiliser. READ MORE

  4. 13. The political economy of gender bias in access to fertiliser: A case study on fertiliser subsidies in Malawi and Tanzania

    University essay from Lunds universitet/Ekonomisk-historiska institutionen

    Author : Ruth Aernout; [2021]
    Keywords : Fertiliser; Gender Bias; Tanzania; Malawi; Input Subsidies; Business and Economics;

    Abstract : It is increasingly agreed upon by both scholars and policymakers that policies have different gendered effects. Agricultural input subsidies are highly debated policies in Africa. READ MORE

  5. 14. Fertiliser derived from human urine : novel media for alkaline urine dehydration

    University essay from SLU/Dept. of Energy and Technology

    Author : Christopher Friedrich; [2021]
    Keywords : nutrient recovery; fertiliser; urine drying; source separation; magnesium oxide; calcium hydroxide;

    Abstract : Every year, each human excretes approximately 4 kg of nitrogen, 1 kg of potassium and 0.3 kg of phosphorus through their urine. In conventional wastewater treatment, these nutrients are usually not recovered for agricultural production, although they can enhance plant growth. READ MORE

  6. 15. No-till grain legume production in organic farming : constraints, possibilities and potential agronomic practice

    University essay from SLU/Dept. of Crop Production Ecology

    Author : Zuzanna Chetnik; [2020]
    Keywords : no-till; conservation tillage; cover crops; intercropping; organic farming; grain legumes;

    Abstract : Today’s agriculture is often specialised, and relies on pesticides, synthetic fertiliser and tillage. Tillage, especially ploughing, has shown to have a negative impact on climate, soil health and -biodiversity. An alternative is no-tillage, a practice that leaves the soil almost undisturbed except for minimal impact during sowing. READ MORE