Essays about: "urea treatment"

Showing result 1 - 5 of 50 essays containing the words urea treatment.

  1. 1. Kretslopp från avlopp : enterokocker som indikatororganismer och bärare av Vankomycinresistens

    University essay from SLU/Department of Molecular Sciences

    Author : Maja Berglind; [2023]
    Keywords : Enterococcus; enterokocker; urea; E. faecalis; E. faecium; hygienisering; ureahygienisering; ammoniak; svartvatten; klosettvatten; klosettavloppsvatten; avloppsvatten; antibiotikaresistens; Vankomycin; Vancomycin; CHROMagar; Slanetz-Bartley agar; indikatororganism;

    Abstract : Tillförsel av växtnäring på åkermark är nödvändig för matproduktionen. En återförsel av mänskliga fekalier och urin via källsorterat toalettavfall (klosettavloppsvatten) ökar cirkulationen av näring, bidrar till förbättrad jordhälsa och minskar risken för övergödning i vattendrag. READ MORE

  3. 2. Incorporation of Plasticizers through Refining into Wood Pulp : A Potential Route For Bio-based Thermoplastic Materials

    University essay from KTH/Materialvetenskap

    Author : Victor Eric Pierre Chartrain; [2023]
    Keywords : Cellulose; Paper; Plasticizer; Mechanical Refining; Cellulosa; Papper; Mjukgörare; mekanisk bearbetning;

    Abstract : Fibers are interesting materials alternative to replace conventional fossil-based plastics, as they are bio-based and do not lead to CO2 emissions. Due to their limited ductility, it is difficult to use them to make complex three-dimensional shapes. READ MORE

  4. 3. Urea-Based Treatments of Unretted Hemp Fibres from Residual Streams

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

    Author : Danilo Esteban Ortiz Sarasty; [2023]
    Keywords : Finola waste; stalks; unretted hemp fibres; degumming; cold urea alkali; microwave-urea;

    Abstract : More sustainable and efficient degumming methods are required to extract finner bast fibres, especially from agro-industrial waste streams such as stalks from hemp for food purposes. For this reason, in this study, two urea-based treatments were evaluated as degumming alternatives for unretted hemp fibres from residual streams, one at cold and alkaline conditions (CUA) and the other in combination with microwave radiation (MWU). READ MORE

  5. 4. Evaluation of model-based fault diagnosis combining physical insights and neural networks applied to an exhaust gas treatment system case study

    University essay from Linköpings universitet/Fordonssystem

    Author : Björn Kleman; Henrik Lindgren; [2021]
    Keywords : model-based; fault diagnosis; neural networks; data-driven; Hybrid; SCR; exhaust gas treatment system; recurrent neural networks; grey-box; heavy duty truck; fault isolation; fault detection; diagnosis; urea; machine learning; Scania; structural model; MSO; residual; Fault Diagnosis Toolbox;

    Abstract : Fault diagnosis can be used to early detect faults in a technical system, which means that workshop service can be planned before a component is fully degraded. Fault diagnosis helps with avoiding downtime, accidents and can be used to reduce emissions for certain applications. READ MORE

  6. 5. Biofilm growth on super-acidic metal-oxide films

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Linnéa Jansson; [2021]
    Keywords : Biofilm; nanoteknik; ureas;

    Abstract : In nature, urea is hydrolyzed to ammonia and bicarbonate primarily by enzymes called ureases. As urine waste contains multiple important plant nutrients, there is interest in the waste treatment field to use urine waste products as plant fertilizers. READ MORE