Essays about: "heavy metals fertilizer"

Showing result 1 - 5 of 19 essays containing the words heavy metals fertilizer.

  1. 1. Pyrolysis of Municipal Sewage Sludge to get a phosphorus rich char residue for soil improvement

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

    Author : Shahin Shamim; [2023]
    Keywords : Sewage Sludge-Phosphorus-Pyrolysis- Heavy metals; Cadmium; Lead; Nickle; Copper; Chromium; Zinc; Biochar; Heating value; Fertilizer- Thermal conversion;

    Abstract : Sewage sludge is a byproduct of wastewater treatment plants. It is a kind of waste. however, it contains several valuable nutrients like phosphorous and nitrogen that are used to rich the soil as a fertilizer compound. READ MORE

  3. 2. The feasibility of using macroalgae from anaerobic digestion as fertilizer in Grenada : A literature study of the potential use of residue as fertilizer in Grenada, and a complementary laboratory study to evaluate the biogas potential

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Anna Sterley; Daniel Thörnkvist; [2020]
    Keywords : Methane; Carbon dioxide; Heavy metals; Sodium hydroxide; Normal cubic meter; Renewable energy; Saccharina latissima; Small Island Developing States; Total solids; Volatile substance; Wet weight; Biokemisk metanpotential; Metan; Koldioxid; Tungmetaller; Natriumhydroxid; Normalkubikmeter; Förnybar energi; Saccharina latissima; Small Island Developing States; Torrsubstans; Organiskt material; Våtvikt;

    Abstract : Coastal areas in Grenada and the Caribbean are experiencing an abundance of stranded macroalgae. Climate change and eutrophication are probable causes of this inconvenience. This leads to logistic and economic dilemmas for the Caribbean societies. READ MORE

  4. 3. Harvesting and utilizing beach cast on Gotland : A study of the benefits, challenges and opportunities of turning a waste into a resource

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Filip Dessle; [2017]
    Keywords : Beach cast; macroalgae; bioenergy; biofertilizer; eutrophication; cadmium;

    Abstract : Accumulation of beach cast biomass on coastal zones around Gotland is an increasing problem that reduce the recreational value of beaches and cause environmental degradation of coastal environments. Beach cast was once regularly harvested on Gotland, as it was considered a valued biofertilizer, but as it seized to be used in combination with the eutrophication of the Baltic sea, beach cast accumulation has increased in scale. READ MORE

  5. 4. Assay of nitrification potentials in sewage sludge : development and evaluation of method, and nitrification potentials in sewage sludge before and after application to soil

    University essay from SLU/Dept. of Microbiology

    Author : Caroline Jöngren; [2016]
    Keywords : Sewage sludge; nitrification potentials; PAO; sanitations treatment; ammonium; storage treatments; nitrous oxide; Nitobacteriacea; Nitrosomona;

    Abstract : Sewage sludge (SS) contains valuable plant nutrients applicable to soil as fertilizer. Application to arable land is though controversial as SS can contain contains such as human pathogens, heavy metals and xenobiotics. READ MORE

  6. 5. A combination of temperature and urea sanitization of blackwater : optimization of a full scale system in Hölö, Sweden

    University essay from SLU/Dept. of Energy and Technology

    Author : Dorothee Göttert; [2016]
    Keywords : ammonia; Ascaris; blackwater; enterococci; f-RNA; bacteriophage; low temperature; Salmonella; somatic coliphage; thermo tolerant coliform bacteria E. coli; urea;

    Abstract : There are an abundance of environmental problems in the world today, some of which can be traced back to a lack of proper sewage treatment. Human toilet waste, also called blackwater, is discharged untreated into the environment where it can contaminate water bodies, including drinking water sources. READ MORE