• Conceptual Design and Techno- Economic Analysis of Biomass to Liquid Processes 

      Pandey, Umesh (Doctoral theses at NTNU;2022:334, Doctoral thesis, 2022)
      There is a need for diversifying energy resources for better energy security. Moreover, diversification is critical in reducing the dependency on fossil fuels and subsequent carbon emissions. The thesis outlines Biomass ...
    • Conceptual design and techno-economic analysis of biomass to liquid processes 

      Pandey, Umesh; Putta, Koteswara Rao; Rout, Kumar Ranjan; Rytter, Erling; Blekkan, Edd Anders; Hillestad, Magne (Peer reviewed; Journal article, 2022)
      Advanced biofuels are produced by upgrading the syncrude from biomass gasification and subsequent Fischer-Tropsch (FT) synthesis. The technology is termed biomass to liquid process (BtL) and can be categorized into ...
    • Fischer-Tropsch synthesis over an alumina-supported cobalt catalyst in a fixed bed reactor – Effect of process parameters 

      Gavrilovic, Ljubisa; Jørgensen, Erik Andreas; Pandey, Umesh; Putta, Koteswara Rao; Rout, Kumar Ranjan; Rytter, Erling; Hillestad, Magne; Blekkan, Edd Anders (Peer reviewed; Journal article, 2020)
      Fischer-Tropsch synthesis has been investigated over a commercial type cobalt-based catalyst (20 %Co/0.5 %Re/γ-Al2O3) by varying the H2/CO ratio (2.55–1.12), CO conversion (15–75 %), reaction temperature (210 °C, 230 °C), ...
    • Modeling Fischer–Tropsch kinetics and product distribution over a cobalt catalyst 

      Pandey, Umesh; Runningen, Anders; Gavrilovic, Ljubisa; Jørgensen, Erik Andreas; Putta, Koteswara Rao; Rout, Kumar Ranjan; Rytter, Erling; Blekkan, Edd Anders; Hillestad, Magne (Peer reviewed; Journal article, 2021)
      A detailed kinetic model describing the consumption of key components and productdistribution in the Fischer–Tropsch synthesis (FTS) over a 20%Co/0.5Re γ-Al2O3commercial catalyst is developed. The developed model incorporates ...
    • Optimal Renewable Energy Distribution Between Gasifier and Electrolyzer for Syngas Generation in a Power and Biomass-to-Liquid Fuel Process 

      Putta, Koteswara Rao; Pandey, Umesh; Gavrilovic, Ljubisa; Rout, Kumar Ranjan; Rytter, Erling; Blekkan, Edd Anders; Hillestad, Magne (Peer reviewed; Journal article, 2022)
      By adding energy as hydrogen to the biomass-to-liquid (BtL) process, several published studies have shown that carbon efficiency can be increased substantially. Hydrogen can be produced from renewable electrical energy ...
    • Staging and path optimization of Fischer-Tropsch synthesis 

      Pandey, Umesh; Putta, Koteswara Rao; Rout, Kumar Ranjan; Blekkan, Edd Anders; Rytter, Erling; Hillestad, Magne (Peer reviewed; Journal article, 2022)
      Optimization of once-through three-stage Fischer-Tropsch (FT) synthesis using path optimization is performed in this study to identify optimal structure and strategies in multi-stage FT synthesis design. The study also ...