Browsing USN Open Archive by Author "Østgaard, Kjetill"
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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’ ... -
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 ...