Browsing NTNU Open by Author "Jonassen, Kjell Rune"

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Effect of salinity shifts on microbial community composition in different nitrifying biofilms in continuous moving bed biofilm reactors.

Jonassen, Kjell Rune (Master thesis, 2013)

Salinity is considered a common stress factor when nitrification is applied in waste water treatment. Observations often show a sub-optimal nitrification performance as a response to variations in in-fluent salinity. ...
Effects of post anaerobic digestion thermal hydrolysis on dewaterability and moisture distribution in digestates

Svennevik, Oda K; Solheim, Odd Egil; Beck, Greeley; Sørland, Geir; Jonassen, Kjell Rune; Rus, Ester; Westereng, Bjørge; Horn, Svein Jarle; Higgins, Matthew J; Nilsen, Pål Jahre (Journal article; Peer reviewed, 2019)

Organic waste fractions such as sewage sludge, food waste and manure can be stabilized by anaerobic digestion (AD) to produce renewable energy in the form of biogas. Following AD, the digested solid fraction (digestate) ...
Understanding structure/function relationships in nitrifying microbial communities after cross-transfer between freshwater and seawater

Gonzalez Silva, Blanca Magdalena; Jonassen, Kjell Rune; Bakke, Ingrid; Østgaard, Kjetill; Vadstein, Olav (Peer reviewed; Journal article, 2021)

In this study, nitrification before and after abrupt cross-transfer in salinity was investigated in two moving bed biofilm reactors inoculated with nitrifying cultures that had adaptation to freshwater (FR) and seawater ...