Now showing items 21-34 of 34

    • Modelling anaerobic digestion during temperature and load variations 

      Bergland, Wenche Hennie; Bakke, Rune (Journal article; Peer reviewed, 2016)
      Experimental results and simulations based on the Anaerobic Digestion Model No.1 (ADM1) with temperature effects on kinetics were used to evaluate rate limiting steps in sludge bed anaerobic digestion (AD) during load and ...
    • On-Off and PI control of methane gas production of a pilot anaerobic digestion reactor 

      Haugen, Finn; Bakke, Rune; Lie, Bernt (Journal article; Peer reviewed, 2013)
      A proposed feedback control system for methane flow control of a real pilot anaerobic digestion reactor fed with dairy waste is designed and analyzed using the modified Hill model, which has previously been adapted to the ...
    • Optimal design and operation of a UASB reactor for dairy cattle manure 

      Haugen, Finn; Bakke, Rune; Lie, Bernt; Hovland, Jon; Vasdal, Knut (Journal article; Peer reviewed, 2015-02-01)
      Optimal design and operation of a planned full-scale UASB reactor at a dairy farm are determined using optimization algorithms based on steady state simulations of a dynamic AD process model combined with models of the ...
    • Oxygen effects in anaerobic digestion - a review 

      Botheju, Deshai; Bakke, Rune (Journal article; Peer reviewed, 2011)
      This article reviews the experimental and theoretical studies conducted on the possible effects of oxygen in biogas generating anaerobic digesters. The interactions of oxygen with various biochemical processes associated ...
    • Oxygen Effects in Anaerobic Digestion II 

      Botheju, Deshai; Lie, Bernt; Bakke, Rune (Journal article, 2010)
      Standard models describing bio-gasification using anaerobic digestion do not include necessary processes to describe digester dynamics under the conditions of oxygen presence. Limited oxygenation in anaerobic digestion can ...
    • Performance analysis of biocathode in bioelectrochemical CO2 reduction 

      Nelabhotla, Anirudh Bhanu Teja; Bakke, Rune; Saldias Dinamarca, Carlos Antonio (Peer reviewed; Journal article, 2019)
      Microbial electrosynthesis (MES) biogas upgrading is done via reduction of carbon dioxide to methane through electroactive microbial catalysis. The baseline MES mode of operation showed about a 39% increase in the methane ...
    • Process parameters affecting the sustainability of fermentative hydrogen production: A short review 

      Dinamarca, Carlos; Bakke, Rune (Journal article; Peer reviewed, 2011)
      Anaerobic fermentation is regarded as the least energy intensive method for H2 production. Extensive literature on experimental attempts to achieve the highest possible theoretical yield (e.g. 4 mol H2/mol glucose) is ...
    • Quantification of biofilm accumulation by an optical approach 

      Bakke, Rune; Kalvenes, Sigmund; Kommedal, Roald (Journal article; Peer reviewed, 2001-02)
      Methods for non-invasive, in situ, measurements of biofilm optical density and biofilm optical thickness were evaluated based on Pseudomonas aeruginosa experiments. Biofilm optical density, measured as intensity reduction ...
    • Simultaneous hydrogen production and consumption in Anaerobic mixed culture fermentation 

      Dinamarca, Carlos (Journal article, 2012)
      The aim of the present study is to investigate the relevance of homoacetogenic H2 consumption on the bio-hydrogen yield and products distribution in mixed culture fermentation. A hybrid anaerobic reactor was operated for ...
    • Sludge blanket anaerobic baffled reactor for source-separated blackwater treatment 

      Eshetu Moges, Melesse; Todt, Daniel; Janka, Eshetu; Heistad, Arve; Bakke, Rune (Journal article; Peer reviewed, 2018)
      The performance of a sludge blanket anaerobic baffled reactor was tested as an integrated treatment system for source-separated blackwater. The system consists of a stirred equalization tank, a buffer inlet tank, and two ...
    • State estimation and model-based control of a pilot anaerobic digestion reactor 

      Haugen, Finn; Bakke, Rune; Lie, Bernt (Journal article; Peer reviewed, 2014)
      A state estimator and various model-based control systems have been designed for a real anaerobic digestion (AD) pilot reactor fed with dairy manure. The model used is a modified Hill model which is a relatively simple ...
    • Temperature control of a pilot anaerobic digestion reactor 

      Haugen, Finn; Bakke, Rune; Lie, Bernt (Journal article; Peer reviewed, 2013)
      Results of analysis and design and implementation of a temperature control system for a practical pilot anaerobic digestion (AD) bioreactor fed with dairy waste are presented. A dynamic model of the reactor temperature is ...
    • Temperature Effects in Anaerobic Digestion Modeling 

      Bergland, Wenche Hennie; Dinamarca, Carlos; Bakke, Rune (Conference object; Peer reviewed, 2015-11-25)
      Temperature effects on kinetic coefficients for the biochemical processes particle disintegration, hydrolysis and substrate uptake reactions were included in the anaerobic digestion model 1 (ADM1). It was evaluated on data ...
    • Treatment of Metformin-Containing Wastewater by a Hybrid Vertical Anaerobic Biofilm-Reactor (HyVAB) 

      Wakjera, Eshetu Janka; Carvajal Rodriguez, Diego Armando; Wang, Shuai; Bakke, Rune; Saldias Dinamarca, Carlos Antonio (Peer reviewed; Journal article, 2019)
      Several series of batch and continuous experiments were performed to investigate the removal of metformin and other contaminants from two wastewaters: wastewater I (WWI) containing 4 mg/L metformin and wastewater II (WWII) ...