Essays about: "Phosphorus recycling"

Showing result 1 - 5 of 33 essays containing the words Phosphorus recycling.

  1. 1. Biochar from separated digestate and pig manure as soil amendment

    University essay from SLU/Dept. of Soil and Environment

    Author : Lovisa Nissen; [2022]
    Keywords : separation; screw press; incubation study; CO2 emission; N mineralization;

    Abstract : The situation in and around the Baltic Sea, with large areas with hypoxia in the sea and areas in the watershed with a high concentration of animal farms, has led to a need to increase the nutrient recycling of animal manure. High levels of phosphorus (P) in the soil lead to leaching, and by reducing the P-level in organic fertilizers, this leaching can be reduced. READ MORE

  3. 2. Potential for Enhanced Biological Phosphorus Removal in an activated sludge system for greywater

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Mehrzad Ghassemi; [2022]
    Keywords : Greywater; EBPR; Phosphorus; Biological treatment; Water and environmental engineering; Technology and Engineering;

    Abstract : As the world's population grows, concerns about water scarcity and rising pollution such as phosphorus and nitrogen have increased significantly. Greywater has been considered by researchers as an ideal alternative to fresh water for decades, and several projects have been implemented to treat and recycle it for various reuse purposes. READ MORE

  4. 3. Continuous leaching of phosphorus from sewage sludge ash

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

    Author : Sofie Göransson; [2022]
    Keywords : Ash leaching; Continuous stirred tank reactor; CSTR; Phosphorus recovery; Sewage sludge ash;

    Abstract : The global demand for food is increasing. Different nutrients are used to increase growth in agriculture and are thus essential for the world ́s food supply. An important and common nutrient is phosphorus. It can be mined, in the form of phosphate, from phosphate rock. READ MORE

  5. 4. Exploring the role of business intermediaries to advance circular bioeconomy : multi case study on plant-essential nutrient recycling firms and users in Sweden

    University essay from SLU/Dept. of Economics

    Author : Urankhaich Batsukh; [2022]
    Keywords : business model; circular bioeconomy; intermediary; nitrogen; nutrient recycling; phosphorus; sewage sludge; wastewater;

    Abstract : Nitrogen (N) and phosphorus (P) are key biological nutrients for global crop production and are directly linked to global food security. Despite the enormous agricultural expansion in the past century, excessive use of these elements is causing biochemical imbalances that lead to overstepping the ‘planetary boundaries’ beyond what the earth can hold. READ MORE

  6. 5. Phosphorus accumulation in a free water surface wetland discharging into the Baltic Sea

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Manuela Watschka; [2021]
    Keywords : free water surface wetland; phosphorus accumulation; internal loading; sediment accumulation;

    Abstract : Eutrophication has been an issue of the Baltic Sea for a long time, causing de-creased water clarity due to enhanced growth of algae and oxygen depletion dur-ing the decomposition of algae. The study investigated the free water surface wetland Vilhelmsberg that treats agricultural runoff before the water reaches the Baltic Sea. READ MORE