Essays about: "Ash recycling"

Showing result 1 - 5 of 17 essays containing the words Ash recycling.

  1. 1. 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

  3. 2. Investigation of Cu and Zn interactions with ilmenite during waste incineration

    University essay from

    Author : Elin Borgman; [2020-06-08T12:03:31Z 2020-06-08T12:03:31Z 2020 2019]
    Keywords : FactSage; copper; zinc; major ash elements;

    Abstract : In 2018, approximately 2.01 billion tons of waste was generated in the world. By 2050, this number is expected to increase drastically to 3.40 billion tons of waste annually as lower income countries develop and the world population increases (Kaz, Yao, BhadaTata, & Van-Woerden, 2018). READ MORE

  4. 3. Towards Circular Economy : Wood ash management for biomass CHP plants in the UK

    University essay from KTH/Kraft- och värmeteknologi

    Author : Étienne Joseph Marcel Bastien; [2020]
    Keywords : ;

    Abstract : In response to climate change, the United Kingdom has committed to reach net zero greenhouse gas emissions by 2050. To reach the set target, the Committee on Climate Change is planning a notable increase of bioenergy up to 15% in the national energy mix and thus an increase of the amount of ash produced. READ MORE

  5. 4. An investigation of some properties of Shredder Fines and an element analysis of its ash to find new ways of dealing with this waste

    University essay from Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Author : Adeel Naidoo; [2020]
    Keywords : Shredder fines; Bottom ash; Ash analysis; Combustion; Chemical fractionation; Elemental analysis; Cement industry; Metal recovery;

    Abstract : Shredder fines are the materials with a particle size of less than 10 mm resulting from the shredding of vehicles and complex metal scrap from industries and municipalities. This waste is currently used as landfill construction material, but Stena Recycling wanted to know whether the bottom ash from the combustion of this waste could be useful to the cement industry, and whether it would be feasible to extract Cu and Zn from this ash. READ MORE

  6. 5. Long-term application of digestate and biofuel ash to arable soil : effects on the solubility of Cd, Al and trace metals as evidenced by simulated scenarios

    University essay from SLU/Dept. of Soil and Environment

    Author : Elias Bäckström; [2018]
    Keywords : cadmium; fertilizer; Visual MINTEQ;

    Abstract : The importance of nutrient recycling could not be emphasized enough in to-day’s society. Reduction of waste as well as recycling of nutrients would be the result if ash and biogas digestate could be used as fertilizer. However, the solubility of Cd, Al and micronutrients might be affected in a different way than by standard fertilizers. READ MORE