Essays about: "urine drying"

Found 4 essays containing the words urine drying.

  1. 1. 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

  3. 2. The potential of innovative dry source-separating urban sanitation technologies in Montero, Bolivia : A sustainability assessment

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Ylva Geber; [2020]
    Keywords : Montero; UDDT; nutrient recycling; sanitation; sustainability; multiple criteria; health; resource use; environmental; technical; organizational; financial; fertilizer; Montero; UDDT; näringsåtervinning; sanitet; hållbarhet; multipla kriterier; hälsa; resursanvändning; miljö; tekniskt; organisatorisk; finansiellt; gödselmedel;

    Abstract : Montero is one of the cities with the highest population growth inthe lowlands of Bolivia. According to Montero's municipal plan for water and sanitation, only 36 % of the population in the urban areas of Montero is connected to the sewage system. READ MORE

  4. 3. Inactivation of the urease enzyme by heat and alkaline pH treatment : retaining urea-nitrogen in urine for fertilizer use

    University essay from SLU/Dept. of Energy and Technology

    Author : Magdalena Geinzer; [2017]
    Keywords : fertilizer; nutrient recycling; source separated urine; urea; urease; urine drying;

    Abstract : Urine, containing nitrogen (N) in the valuable form of urea, has a high fertilizer potential if it is dehydrated and the nutrients are concentrated. However, urea is not only a valuable N source for plants but also for microbiota which possess a highly efficient urease enzyme to degrade urea into volatile ammonia (NH3). READ MORE

  5. 4. Urine drying with ash and lime at temperatures 20-60°C : nutrient recovery from source separated urine

    University essay from SLU/Dept. of Energy and Technology

    Author : Shanta Dutta; [2012]
    Keywords : Urine; drying; evaporation; treatment; ammonia; ammoniumnitrogen; nutrient; recycling; recovery; urea hydrolysis; fertilizer; ecological sanitation; eco-san; agriculture;

    Abstract : Utilization of source-separated urine in agricultural production has been practiced and different treatment options have been developed in last two decades. The purpose of this study was to develop a drying technique for untreated human urine added to ash and lime as drying agent at temperature 20-60°C. READ MORE