Essays about: "Dissolved Hydrogen"

Showing result 6 - 10 of 13 essays containing the words Dissolved Hydrogen.

  1. 6. Tracing the source of colourless carbon in an arctic lake on SW Greenland : Insights of organic matter origin from hydrogen isotope analyses of samples prepared using steam equilibration

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Bror Holmgren; [2016]
    Keywords : Søndre Strømfjord; dissolved organic carbon; stable isotopes; steam equilibration;

    Abstract : Lakes play an important role in the global carbon (C) cycle as they process carbon from terrestrial (allochthonous) and within lake (autochthonous) sources and may store C over long periods of time. Some arctic lakes contain high concentrations of dissolved organic carbon (DOC) that does not absorb light and thus remains colourless. READ MORE

  3. 7. Management of hydrogen sulfide in anaerobic digestion of enzyme pretreated marine macro-algae

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Salar Haghighatafshar; [2012]
    Keywords : Technology and Engineering;

    Abstract : Enzymatic pretreatment of algae – by means of cellulose degrading enzyme – was evaluated through lab-scale and pilot-scale experiments. The degradation efficiency of the enzyme depended on the initial physical quality of the algae. READ MORE

  4. 8. Radiation induced corrosion of copper

    University essay from KTH/Skolan för kemivetenskap (CHE)

    Author : Åsa Björkbacka; [2011]
    Keywords : Copper; radiation; gamma radiation; corrosion; SEM; IRAS; ICP; cuprite;

    Abstract : The Swedish concept for storage of highly radioactive spent nuclear fuel is called the KBS-3 program. The proposed procedure is that the waste will be stored in a deep repository, 500 meters down in the Swedish bedrock, for 100 000 years. The fuel will be sealed inside cast iron cylinders surrounded by copper. READ MORE

  5. 9. Experimental Design and Optimization of Hydrolysis of Paper for Biogas Production

    University essay from Högskolan i Borås/Institutionen Ingenjörshögskolan

    Author : Johan Yngvesson; [2011]
    Keywords : ;

    Abstract : The waste production in Sweden and Europe is increasing each year. Swedish households throw away 2.7 million tonnes material annually and because of though waste legislations, most of this is recycled as material or energy. READ MORE

  6. 10. Hydrogen-assisted stress corrosion cracking of high strength steel

    University essay from KTH/Materialvetenskap

    Author : Rohollah Ghasemi; [2011]
    Keywords : Hydrogen assisted stress corrosion cracking; Hydrogen embrittlement; High strength steel; Slow Strain Rate Test;

    Abstract : In this work, Slow Strain Rate Test (SSRT) testing, Light Optical Microscopy (LOM) and Scanning Electron Microscopy (SEM) were used to study the effect of microstructure, corrosive environments and cathodic polarisation on stress corrosion cracking (SCC) of two grades of high strength steels, Type A and Type B. Type A is manufactured by quench and tempered (Q&T) method. READ MORE