• Boron Removal from Silicon Melt by gas Blowing Technique 

      Hoseinpur Kermani, Arman; Andersson, Stefan; Müller, Michael; Tang, Kai; Safarian, Jafar (Peer reviewed; Journal article, 2022)
      Due to the detrimental effects of boron (B) on the efficiency of silicon (Si) photovoltaic cells, complete boron removal from Si is necessary to produce solar grade Si (SoG–Si, with a maximum limit of 0.1 ppmw boron). Gas ...
    • The Effect of Pre-Oxidation on the Reducibility of Chromite Using Hydrogen: A Preliminary Study 

      Davies, Jamey; Tangstad, Merete; Ringdalen, Eli; Beukes, Johan Paul; Bessarabov, Dmitri; du Preez, Stephanus Petrus (Peer reviewed; Journal article, 2022)
      The majority of ferrochrome (FeCr) is produced through the carbothermic reduction of chromite ore. In recent years, FeCr producers have been pressured to curve carbon emissions, necessitating the exploration of alternative ...
    • Efficient Production of Clean Power and Hydrogen Through Synergistic Integration of Chemical Looping Combustion and Reforming 

      Khan, Mohammed Nazeer Ul Hasan; Cloete, Schalk Willem Petrus; Amini, Shahriar (Peer reviewed; Journal article, 2020)
      Chemical looping combustion (CLC) technology generates power while capturing CO2 inherently with no direct energy penalty. However, previous studies have shown significant energy penalties due to low turbine inlet temperature ...
    • Grain boundary segregation in Pd-Cu-Ag alloys for high permeability hydrogen separation membranes 

      Løvvik, Ole Martin; Zhao, Dongdong; Li, Yanjun; Bredesen, Rune; Peters, Thijs (Peer reviewed; Journal article, 2018)
      Dense metal membranes that are based on palladium (Pd) are promising for hydrogen separation and production due to their high selectivity and permeability. Optimization of alloy composition has normally focused on bulk ...
    • Hydrogen trapping in X70 structural pipeline steel and weldments 

      Sezgin, Jean-Gabriel; Fjær, Hallvard Gustav; Matsunaga, Hisao; Yamabe, Junichiro; Olden, Vigdis (Chapter; Peer reviewed, 2018)
      Diffusion measurements and thermal desorption measurements have been performed on a X70 pipeline steel, in as received and normalized and quenched condition, after being hydrogen charged for 200 h at 100 MPa hydrogen gas ...
    • The use of hydrogen as a potential reductant in the chromite smelting industry 

      Davies, Jamey; Paktunc, Dogan; Ramos-Hernandez, José Juan; Tangstad, Merete; Ringdalen, Eli; Beukes, Johan P.; Bessarabov, Dmitri G.; Du Preez, Stephanus P. (Peer reviewed; Journal article, 2022)
      The chromium (Cr) content of stainless steel originates from recycled scrap and/or ferrochrome (FeCr), which is mainly produced by the carbothermic reduction of chromite ore. Ever-increasing pressure on FeCr producers to ...