• Adapting dynamic mathematical models to a pilot anaerobic digestion reactor 

      Haugen, Finn; Bakke, Rune; Lie, Bernt (Journal article; Peer reviewed, 2013)
      A dynamic model has been adapted to a pilot anaerobic reactor fed diarymanure. Both steady-state data from online sensors and laboratory analysis anddynamic operational data from online sensors are used in the model ...
    • Anaerobic Digestion of Hemicellulosic Sugars Implemented in ADM1 

      Karlsen, Vibeke Bredvold; Ghimire, Nirmal; Bakke, Rune; Bergland, Wenche Hennie (Peer reviewed; Journal article, 2020)
      Lignocellulosic biomass is a sustainable and renewable source for both solids like biochar and biomethane by anaerobic digestion (AD). Hot water extraction (HWE) improves the total utilization of the biomass and produces ...
    • Anaerobic digestion of pig manure supernatant at high ammonia concentrations characterized by high abundances of Methanosaeta and non-euryarchaeotal archaea 

      Nordgård, Anna Synnøve Røstad; Bergland, Wenche Hennie; Vadstein, Olav; Mironov, Vladimir; Bakke, Rune; Østgaard, Kjetill; Bakke, Ingrid (Journal article; Peer reviewed, 2017)
      We examined the effect of ammonium and temperature on methane production in high rate upflow anaerobic sludge bed reactors treating pig manure supernatant. We operated four reactors at two ammonium concentrations (‘low’ ...
    • Bicarbonate for microalgae cultivation: a case study in a chlorophyte, Tetradesmus wisconsinensis isolated from a Norwegian lake 

      Umetani, Ikumi; Wakjera, Eshetu Janka; Sposób, Michal; Hulatt, Christopher Jonathan; Kleiven, Synne; Bakke, Rune (Peer reviewed; Journal article, 2021)
      Bicarbonate was evaluated as an alternative carbon source for a green microalga, Tetradesmus wisconsinensis, isolated from Lake Norsjø in Norway. Photosynthesis, growth, and lipid production were studied using four inorganic ...
    • Biogas purification using membrane micro-aeration: A mass transfer analysis 

      Bakke, Rune; Perera, Degurunnehalage Wathsala U.; Botheju, Paranavidanelage Deshai (Journal article; Peer reviewed, 2014)
      When sulfur containing organic feedstocks undergo anaerobic digestion, sulfides are formed due to the biological activities of sulfur reducing bacteria. Presence of hydrogen sulfide (H2S) negatively affects the usage of ...
    • Biogas reactor modeling with ADM1 

      Lyseng, Benjamin C.; Bergland, Wenche Hennie; Botheju, Deshai; Haugen, Finn; Bakke, Rune (HiT skrift, Research report, 2013-02-11)
    • Biological treatment of amine wastes generated in post combustion CO2 capture 

      Botheju, Deshai; Li, Yuan; Hovland, Jon; Haugen, Hans Aksel; Bakke, Rune (Journal article; Peer reviewed, 2011)
      The wastes generation by amine degradation is an important issue to be addressed when considering CCS schemes. Biological treatment of amine wastes can be a strategy with reasonable economy and environmental sustainability. ...
    • Effect of Intermittent Aeration in a Hybrid Vertical Anaerobic Biofilm Reactor (HyVAB) for Reject Water Treatment 

      Sivalingam, Vasan; Dinamarca, Carlos; Wakjera, Eshetu Janka; Kukankov, Sergey; Wang, Shuai; Bakke, Rune (Peer reviewed; Journal article, 2020)
      Water from anaerobic sludge dewatering (reject water that is recycled to the inlet main process treatment) from the Knarrdalstrand municipal wastewater treatment plant in Porsgrunn, Norway, contains 2.4 g/L of total chemical ...
    • Effect of Particulate Disintegration on Biomethane Potential of Particle-Rich Substrates in Batch Anaerobic Reactor 

      Tassew, Fasil Ayelegn; Bergland, Wenche Hennie; Dinamarca, Carlos; Bakke, Rune (Peer reviewed; Journal article, 2019)
      An investigation of particle disintegration was carried out using batch anaerobic reactors and a particle-rich substrate from pig manure supernatant. Two types of samples were applied, one high in suspended particles (raw ...
    • Effects of initial molecular weight on removal rate of dextran in biofilms 

      Bakke, Rune; Milferstedt, Kim; Kommedal, Roald; Morgenroth, Eberhard (Journal article; Peer reviewed, 2006-05)
      Degradation kinetics of different size dextrans in a biofilm reactor were evaluated. Degradation rates of dextran standards, measured as time series of oxygen utilisation rates (OUR), decreased with increasing initial ...
    • Effects of N/S Molar Ratio on Product Formation in Psychrophilic Autotrophic Removal of Sulfide 

      Sposob, Michal; Bakke, Rune; Dinamarca, Carlos (Journal article; Peer reviewed, 2017)
    • Effects of Psychrophilic Storage on Manures as Substrate for Anaerobic Digestion 

      Bergland, Wenche Hennie; Dinamarca, Carlos; Bakke, Rune (Journal article; Peer reviewed, 2014-08-05)
      The idea that storage can enhance manure quality as substrate for anaerobic digestion (AD) to recover more methane is evaluated by studying storage time and temperature effects on manure composition. Volatile fatty acids ...
    • Efficiency of the anaerobic digestion of amine wastes 

      Wang, Shuai; Hovland, Jon; Bakke, Rune (Journal article; Peer reviewed, 2013-08-04)
      Laboratory-scale anaerobic degradation of monoethanolamine waste (MEAw) with co-substrate organics was conducted at roomtemperature and organic loading rates from 0.19 to 5.03 kg COD/m3 day for 486 days in a hybrid digester. ...
    • Granular sludge bed processes in anaerobic digestion of particle-rich substrates 

      Tassew, Fasil Ayelegn; Bergland, Wenche Hennie; Dinamarca, Carlos; Kommedal, Roald; Bakke, Rune (Peer reviewed; Journal article, 2019)
      Granular sludge bed (GSB) anaerobic digestion (AD) is a well-established method for efficient wastewater treatment, limited, however, by the wastewater particle content. This review is carried out to investigate how and ...
    • High rate manure slurry anaerobic digestion 

      Bergland, Wenche Hennie; Dinamarca, Carlos; Toradzadegan, Mehrdad; Nordgård, Anna Synnøve Røstad; Bakke, Ingrid; Bakke, Rune (Journal article, 2015)
      The study shows that high rate anaerobic digestion may be an efficient way to obtain sustainable energy recovery from slurries such as pig manure. High process capacity and robustness to 5% daily load increases are observed ...
    • High rate manure supernatant digestion 

      Bergland, Wenche Hennie; Dinamarca, Carlos; Toradzadegan, Mehrdad; Nordgård, Anna Synnøve Røstad; Bakke, Ingrid; Bakke, Rune (Journal article; Peer reviewed, 2015)
      The study shows that high rate anaerobic digestion may be an efficient way to obtain sustainable energy recovery from slurries such as pig manure. High process capacity and robustness to 5 % daily load increases are observed ...
    • Influences of temperature and substrate particle content on granular sludge bed anaerobic digestion 

      Tassew, Fasil Ayelegn; Bergland, Wenche Hennie; Dinamarca, Carlos; Bakke, Rune (Peer reviewed; Journal article, 2019)
      Influences of temperature (25–35 °C) and substrate particulate content (3.0–9.4 g total suspended solids (TSS)/L) on granular sludge bed anaerobic digestion (AD) were analyzed in lab-scale reactors using manure as a substrate ...
    • Mapping anaerobic sludge bed community adaptations to manure supernatant in biogas reactors 

      Nordgård, Anna Synnøve Røstad; Bergland, Wenche Hennie; Bakke, Rune; Østgaard, Kjetill; Bakke, Ingunn (Journal article; Peer reviewed, 2018)
      In upflow anaerobic sludge bed (UASB) reactors, biomass present as granules allows for long solids retention time. Here, granules from a process treating pulp and paper industrial wastewater were successfully applied as ...
    • Methane from Syngas by Anaerobic Digestion 

      Shah, Sanjay; Bergland, Wenche Hennie; Bakke, Rune (Journal article; Peer reviewed, 2017)
      Anaerobic digestion (AD) is a prominent green technology used for methane production from organic waste. Previous studies have shown that the amount of CH4 produced during anaerobic digestion can be increased by adding ...
    • Modeling and simulation of lab-scale anaerobic co-digestion of MEA waste 

      Wang, Shuai; Hovland, Jon; Bakke, Rune (Journal article; Peer reviewed, 2014)
      Anaerobic digestion model No.1 (ADM1) was applied and expanded in this study to model and simulate anaerobic digestion (AD) of an industrial carbon capture reclaimer MEA (monoethanolamine) waste (MEAw) together with easily ...