• Anaerobic Digestion of Aqueous Pyrolysis Liquid in ADM1 

      Raya, Dheeraj; Ghimire, Nirmal; Flatabø, Gudny Øyre; Bergland, Wenche Hennie (Peer reviewed; Journal article, 2021)
      Aqueous pyrolysis liquid (APL) is formed from pyrolysis of lignocellulosic biomass and is considered as a possible feed for anaerobic digestion (AD). APL is known to contain many components that can have a negative impact ...
    • 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 ...
    • Investigation of Bioprocess for Industrial Wastewater Treatment 

      Ghimire, Nirmal (Master thesis, 2016)
      A pilot scale Hybrid Vertical Anaerobic Biofilm (HyVABr) reactor was applied to the treatment of waste oil refinery wastewater. The reactor comprised a bottom anaerobic digestion stage operated as an Up-flow Anaerobic ...
    • Liquefaction of lignocellulosic biomass for methane production: A review 

      Ghimire, Nirmal; Bakke, Rune; Bergland, Wenche Hennie (Peer reviewed; Journal article, 2021)
      Hydrothermal pretreatment (HTP) (Hot water extraction (HWE) and steam pretreatment) and pyrolysis have the potential to liquefy lignocellulosic biomass. HTP produces hydrolysate, consisting mainly of solubilized hemicellulose, ...
    • Methane production from lignocellulosic residues 

      Ghimire, Nirmal (Doctoral dissertations at the University of South-Eastern Norway;93, Doctoral thesis, 2021-05-25)
      Aims: Biochar production by intermediate pyrolysis of renewable lignocellulosic biomass to replace traditional carbon material as a reducing agent and energy source in the metallurgical industries produces carbon rich waste ...
    • Thermophilic methane production from hydrothermally pretreated norway spruce (Picea abies) 

      Ghimire, Nirmal; Bakke, Rune; Bergland, Wenche Hennie (Peer reviewed; Journal article, 2020)
      Norway spruce (Picea abies) is an industrially important softwood species available in northern Europe and can be used to produce bio-methane after proper pretreatment to overcome its recalcitrant complex structure. Hot ...