Kjetill Østgaard

About

Areas of speciality / Fields of responsibility

Keywords:

environmental biotechnology; research and tutoring
teaching; environmental biotechnology, microbial ecology, error analysis & research planning
exobiology; now as a hobby
lunch seminar organizer

Research areas, general apects:

The model system concept may be identified as the common denominator of my research, primarily the development and application of reproducible experimental systems for biological studies ranging from the molecular level to that of microbial communities.

Cell culture systems has obviously been a key factor, as illustrated for mammalian cells, microalgae, land plant and macroalgal protoplast and tissue culture, as well as a variety of bacterial monocultures and ecosystems.

Gel technology may be emphasised in this connection, that is the development and application of gel entrapment and gel support media for cell and tissue culture systems. Gel entrapment includes soft agarose for transformed human cells, alginate entrapment of plant protoplasts and callus as well as seaweed cell and tissue cultures and open bacterial systems, and in particular chemically modified polyvinyl alcohol (PVA-SbQ) gels applicable even in biopolymer-degrading open systems such as wastewater. Previous development of homogenous alginate gel media is part of the basis for current studies of microbial adhesion and growth on non-solid gel surfaces.

Biopolymer research may be added as a key word in this connection, particularly related to alginate ion binding, controlled gel formation, cytokine induction, stability and characterization by as well as degradation pattern of alginate lyases. Alginate lyase studies also include other applications related to seaweed biotechnology as well as large scale production. Carrageenase production has been developed similarly. Chitosan studies are connected to cell adhesion and flocculation. Finally, metabolic studies of bacterial organic (PHB & PHV) and inorganic (polyphosphate) polymers may also be added.

Measuring physics has generally been a helpful tool in this work, particularly when developing optical detection methods based on turbidity or fluorescence, including microcomputer-assisted control. NIR as well as NMR may also be mentioned.

Finally, the model system concept also includes mathematical modelling when suitable. It has occasionally been applied such as in the cases of storm wave statistics and wave refraction, cooperative ion binding to alginates, often in cooperation with others such as in the cases of P cycling due to zooplankton grazing, non-Michaelis-Menten enzyme kinetics and immobilized microbial community dynamics analysed by cellular automata.

Recent research in environmental biotechnology

may be divided in the following major activities (previous oil related research not included):

a) Biodegradation of organic material; marine biomass, cow manure and biogas production. Key words: Seaweeds, alginate, hydrolysis, composting, biogas production, ethanol production. Activity based on earlier NFR projects, on Biodegradation of Norwegian brown seaweeds (Pronova/NFR) supporting one Ph.D. 1997, Energy from macroalgae (Hydro/NFR) supporting one Ph.D. 2000, cooperation with Sintef Biotechnology 2009. On cow manure; total utilization and byproduct stabilization, from 2009 on also participation in NFR (BIP) project Biogas Trøndelag on biogas production.

b) Biological wastewater treatment; removal of N and P. Key words: Gel entrapment, nitrification, EBPR, P sludge analysis, N removal from process water in marine aquaculture and CO2 capture plants. Earlier projects include Swedish NUTEKs STAMP program, New immobilization techniques for biological wastewater treatment (NFR) supported one Ph.D. 1999. Current activities are related to nitrifying biofilms applied in recycled marine aquaculture, and to total N removal from process water after post-combustion CO2 capture by amine absorption in cooperation with Sintef Process Technology.

c) Biofilm formation and biofouling. Key words: Chitosan, non-solid surfaces, hydrogels, marine biofouling. Activity based on earlier NTNF projects. Recent projects Biopolymers in biofilm and flock formation (NFR/Jotun) with one Ph.D. finished 2001, Marine Biofouling (Jotun/NFR) with one in 2002.

Teaching (in cooperation with others):

TBT 4130 Environmental Biotechnology
TBT 4505 - T1 Error Analysis and Research Planning
BT 8101 Microbial ecology

Other interests:

Exobiology; teaching may be reactivated upon request
Mountain hiking, particularly under the Law West of Litlos [in Norwegian only]
Building scratch/plastic historical scale models
Writing erotic poetry

Publications

2021

Gonzalez Silva, Blanca Magdalena; Jonassen, Kjell Rune; Bakke, Ingrid; Østgaard, Kjetill; Vadstein, Olav. (2021) Understanding structure/function relationships in nitrifying microbial communities after cross-transfer between freshwater and seawater. Scientific Reports
Academic article

2018

Nordgård, Anna Synnøve Røstad; Bergland, Wenche Hennie; Bakke, Rune; Østgaard, Kjetill; Bakke, Ingrid. (2018) Mapping anaerobic sludge bed community adaptations to manure supernatant in biogas reactors. Scientific Reports
Academic article

2017

Henry, Ingrid Annemarie; Kowarz, Viktoria Corina; Østgaard, Kjetill. (2017) Aerobic and anoxic biodegradability of amines applied in CO2-capture. International Journal of Greenhouse Gas Control
Academic article
Gonzalez Silva, Blanca Magdalena; Rønning, Are J.; Andreassen, Ingrid Krogrud; Bakke, Ingrid; Cervantes, Francisco J.; Østgaard, Kjetill. (2017) Changes in the microbial community of an anammox consortium during adaptation to marine conditions revealed by 454 pyrosequencing. Applied Microbiology and Biotechnology
Academic article
Nordgård, Anna Synnøve Røstad; Bakke, Ingrid; Bakke, Rune; Østgaard, Kjetill. (2017) Microbial community analysis in developing biogas reactor technology for Norwegian agriculture. NTNU
Doctoral dissertation
Nordgård, Anna Synnøve Røstad; Bergland, Wenche Hennie; Vadstein, Olav; Mironov, Vladimir; Bakke, Rune; Østgaard, Kjetill. (2017) Anaerobic digestion of pig manure supernatant at high ammonia concentrations characterized by high abundances of Methanosaeta and non-euryarchaeotal archaea. Scientific Reports
Academic article

2016

Østgaard, Kjetill; Kowarz, Viktoria Corina; Wang, Shuai; Henry, Ingrid Annemarie; Sposob, Michal; Haugen, Hildegunn Hegna. (2016) Syringe test screening of microbial gas production activity: Cases denitrification and biogas formation. Journal of Microbiological Methods
Academic article
Henry, Ingrid Annemarie; Einbu, Aslak; Svendsen, Hallvard Fjøsne; Bakke, Ingrid; Østgaard, Kjetill. (2016) Inhibition factors in biofilm N removal systems treating wastes generated by amine based CO2 capture. International Journal of Greenhouse Gas Control
Academic article
Gonzalez Silva, Blanca Magdalena; Jonassen, Kjell Rune; Bakke, Ingrid; Østgaard, Kjetill; Vadstein, Olav. (2016) Nitrification at different salinities: Biofilm community composition and physiological plasticity. Water Research
Academic article

2015

Nordgård, Anna Synnøve Røstad; Bergland, Wenche Hennie; Bakke, Rune; Vadstein, Olav; Østgaard, Kjetill; Bakke, Ingrid. (2015) Microbial community dynamics and biogas production from manure fractions in sludge bed anaerobic digestion. Journal of Applied Microbiology
Academic article

2014

Hauser, Ingrid; Einbu, Aslak; Svendsen, Hallvard Fjøsne; Østgaard, Kjetill. (2014) Biological treatment of effluents generated by amine based CO2-capture plants. Journal of Energy Challenges and Mechanics
Academic article

2013

Hauser, Ingrid; Einbu, Aslak; Østgaard, Kjetill; Borges Colaco, Ana; Skjæran, Julie Anita; Svendsen, Hallvard Fjøsne. (2013) Biological N Removal from Wastes Generated from Amine-Based CO2 Capture: Case Monoethanolamine. Applied Biochemistry and Biotechnology (ABAB)
Academic article
Hauser, Ingrid; Einbu, Aslak; Østgaard, Kjetill; Svendsen, Hallvard Fjøsne; Cervantes, Francisco Javier. (2013) Biodegradation of amine waste generated from post-combustion CO2 capture in a moving bed biofilm treatment system. Biotechnology Letters
Academic article

2003

Rasmussen, Kjetil; Østgaard, Kjetill. (2003) Adhesion of the marine bacterium Pseudomonas sp. NCIMB 2021 to different hydrogel surfaces. Water Research
Academic article

2002

Vogelsang, Christian; Schramm, Andreas; Picioreanu, Cristian; van Loosdrecht, Mark C.M.; Østgaard, Kjetill. (2002) Microbial community analysis by FISH for mathematical modelling of selective enrichment of gel-entrapped nitrifiers obtained from domestic wastewater. Hydrobiologia
Academic article
Rasmussen, Kjetil; Willemsen, Peter R.; Østgaard, Kjetill. (2002) Barnacle settlement on hydrogels. Biofouling (Print)
Academic article
Strand, Sabina P.; Nordengen, Thomas; Østgaard, Kjetill. (2002) Efficiency of chitosans applied for flocculation of different bacteria. Water Research
Academic article
Strand, Sabina P.; Vårum, Kjell Morten; Østgaard, Kjetill. (2002) Interactions between chitosans and bacterial suspensions: adsorption and flocculation. Colloids and Surfaces B: Biointerfaces
Academic article

2001

Rasmussen, Kjetil; Østgaard, Kjetill. (2001) Adhesion of the marine fouling diatom Amphora coffeaeformis to non-solid gel surfaces. Biofouling (Print)
Academic article
Horn, S.J.; Østgaard, Kjetill. (2001) Alginate lyase activity and acidogenesis during fermentation of Laminaria hyperborea. Journal of Applied Phycology
Academic article
Strand, S.P.; Vandvik, M.S.; Vårum, Kjell Morten; Østgaard, Kjetill. (2001) Screening of chitosans and conditions for bacterial flocculation. Biomacromolecules
Academic article
Strand, Sabina P.; Tømmeraas, Kristoffer; Vårum, Kjell Morten; Østgaard, Kjetill. (2001) Electrophoretic light scattering studies of chitosans with different degrees of N-acetylation. Biomacromolecules
Academic article

1995

Christensson, Magnus; Jönsson, Karin; Lee, Natuschka; Lie, Ewa; Johansson, Per; Welander, Thomas. (1995) Utv@ærdering av biologisk fosforavskiljning vid @Øresundsverket i Helsingborg : processtekniska och mikrobiologiska aspekter. VA-FORSK-serien (1995-04)
Report

1993

Østgaard, Kjetill. (1993) Determination of alginate composition by a simple enzymatic assay. Hydrobiologia
Academic article

1985

Sydnes, Leiv K.; Hemmingsen, J.H.; Skare, S.; Hansen, S.; Falk-Petersen, Inger-Britt; Lønning, S.. (1985) Seasonal variations in weathering and toxicity of crude oil on seawater under Arctic conditions. Environmental Science and Technology
Academic article

Journal publications

Gonzalez Silva, Blanca Magdalena; Jonassen, Kjell Rune; Bakke, Ingrid; Østgaard, Kjetill; Vadstein, Olav. (2021) Understanding structure/function relationships in nitrifying microbial communities after cross-transfer between freshwater and seawater. Scientific Reports
Academic article
Nordgård, Anna Synnøve Røstad; Bergland, Wenche Hennie; Bakke, Rune; Østgaard, Kjetill; Bakke, Ingrid. (2018) Mapping anaerobic sludge bed community adaptations to manure supernatant in biogas reactors. Scientific Reports
Academic article
Henry, Ingrid Annemarie; Kowarz, Viktoria Corina; Østgaard, Kjetill. (2017) Aerobic and anoxic biodegradability of amines applied in CO2-capture. International Journal of Greenhouse Gas Control
Academic article
Gonzalez Silva, Blanca Magdalena; Rønning, Are J.; Andreassen, Ingrid Krogrud; Bakke, Ingrid; Cervantes, Francisco J.; Østgaard, Kjetill. (2017) Changes in the microbial community of an anammox consortium during adaptation to marine conditions revealed by 454 pyrosequencing. Applied Microbiology and Biotechnology
Academic article
Nordgård, Anna Synnøve Røstad; Bergland, Wenche Hennie; Vadstein, Olav; Mironov, Vladimir; Bakke, Rune; Østgaard, Kjetill. (2017) Anaerobic digestion of pig manure supernatant at high ammonia concentrations characterized by high abundances of Methanosaeta and non-euryarchaeotal archaea. Scientific Reports
Academic article
Østgaard, Kjetill; Kowarz, Viktoria Corina; Wang, Shuai; Henry, Ingrid Annemarie; Sposob, Michal; Haugen, Hildegunn Hegna. (2016) Syringe test screening of microbial gas production activity: Cases denitrification and biogas formation. Journal of Microbiological Methods
Academic article
Henry, Ingrid Annemarie; Einbu, Aslak; Svendsen, Hallvard Fjøsne; Bakke, Ingrid; Østgaard, Kjetill. (2016) Inhibition factors in biofilm N removal systems treating wastes generated by amine based CO2 capture. International Journal of Greenhouse Gas Control
Academic article
Gonzalez Silva, Blanca Magdalena; Jonassen, Kjell Rune; Bakke, Ingrid; Østgaard, Kjetill; Vadstein, Olav. (2016) Nitrification at different salinities: Biofilm community composition and physiological plasticity. Water Research
Academic article
Nordgård, Anna Synnøve Røstad; Bergland, Wenche Hennie; Bakke, Rune; Vadstein, Olav; Østgaard, Kjetill; Bakke, Ingrid. (2015) Microbial community dynamics and biogas production from manure fractions in sludge bed anaerobic digestion. Journal of Applied Microbiology
Academic article
Hauser, Ingrid; Einbu, Aslak; Svendsen, Hallvard Fjøsne; Østgaard, Kjetill. (2014) Biological treatment of effluents generated by amine based CO2-capture plants. Journal of Energy Challenges and Mechanics
Academic article
Hauser, Ingrid; Einbu, Aslak; Østgaard, Kjetill; Borges Colaco, Ana; Skjæran, Julie Anita; Svendsen, Hallvard Fjøsne. (2013) Biological N Removal from Wastes Generated from Amine-Based CO2 Capture: Case Monoethanolamine. Applied Biochemistry and Biotechnology (ABAB)
Academic article
Hauser, Ingrid; Einbu, Aslak; Østgaard, Kjetill; Svendsen, Hallvard Fjøsne; Cervantes, Francisco Javier. (2013) Biodegradation of amine waste generated from post-combustion CO2 capture in a moving bed biofilm treatment system. Biotechnology Letters
Academic article
Rasmussen, Kjetil; Østgaard, Kjetill. (2003) Adhesion of the marine bacterium Pseudomonas sp. NCIMB 2021 to different hydrogel surfaces. Water Research
Academic article
Vogelsang, Christian; Schramm, Andreas; Picioreanu, Cristian; van Loosdrecht, Mark C.M.; Østgaard, Kjetill. (2002) Microbial community analysis by FISH for mathematical modelling of selective enrichment of gel-entrapped nitrifiers obtained from domestic wastewater. Hydrobiologia
Academic article
Rasmussen, Kjetil; Willemsen, Peter R.; Østgaard, Kjetill. (2002) Barnacle settlement on hydrogels. Biofouling (Print)
Academic article
Strand, Sabina P.; Nordengen, Thomas; Østgaard, Kjetill. (2002) Efficiency of chitosans applied for flocculation of different bacteria. Water Research
Academic article
Strand, Sabina P.; Vårum, Kjell Morten; Østgaard, Kjetill. (2002) Interactions between chitosans and bacterial suspensions: adsorption and flocculation. Colloids and Surfaces B: Biointerfaces
Academic article
Rasmussen, Kjetil; Østgaard, Kjetill. (2001) Adhesion of the marine fouling diatom Amphora coffeaeformis to non-solid gel surfaces. Biofouling (Print)
Academic article
Horn, S.J.; Østgaard, Kjetill. (2001) Alginate lyase activity and acidogenesis during fermentation of Laminaria hyperborea. Journal of Applied Phycology
Academic article
Strand, S.P.; Vandvik, M.S.; Vårum, Kjell Morten; Østgaard, Kjetill. (2001) Screening of chitosans and conditions for bacterial flocculation. Biomacromolecules
Academic article
Strand, Sabina P.; Tømmeraas, Kristoffer; Vårum, Kjell Morten; Østgaard, Kjetill. (2001) Electrophoretic light scattering studies of chitosans with different degrees of N-acetylation. Biomacromolecules
Academic article
Horn, S J.; Aasen, I M.; Østgaard, Kjetill. (2000) Production of ethanol from mannitol by Zymobacter palmae. Journal of Industrial Microbiology & Biotechnology
Academic article
Rasmussen, Kirsten; Østgaard, Kjetill. (2000) In situ autofluorescence detection of a fouling marine diatom on different surfaces. Biofouling (Print)
Academic article
Vogelsang, Christian; Wijffels, René H.; Østgaard, Kjetill. (2000) Rheological properties and mechanical stability of new gel-entrapment systems applied in bioreactors. Biotechnology and Bioengineering
Academic article
Horn, S J.; Aasen, I M.; Østgaard, Kjetill. (2000) Ethanol production from seaweed extract. Journal of Industrial Microbiology & Biotechnology
Academic article
Moen, Einar; Larsen, Bjørn; Østgaard, Kjetill; Jensen, Arne. (1999) Alginate stability during high salt preservation of Ascophyllum nodosum. Journal of Applied Phycology
Academic article
Prochazkova, Sabina; Vårum, Kjell Morten; Østgaard, Kjetill. (1999) Quantitative determination of chitosans by ninhydrin. Carbohydrate Polymers
Academic article
Horn, Svein Jarle; Moen, Einar; Østgaard, Kjetill. (1999) Direct determination of alginate content in brown algae by near infra-red (NIR) spectroscopy. Journal of Applied Phycology
Academic article
Vogelsang, Christian; Gollembiewski, K.; Østgaard, Kjetill. (1999) Effect of preservation techniques on the regeneration of gel entrapped nitrifying sludge. Water Research
Academic article
Lie, Ewa; Christensson, Magnus; Jönsson, Karin; Østgaard, Kjetill; Johansson, Per; Welander, Thomas. (1997) Carbon and phosphorus transformations in a full-scale enhanced biological phosphorus removal process. Water Research
Academic article
Vogelsang, Christian; Husby, Asbjørn; Østgaard, Kjetill. (1997) Functional stability of temperature-compensated nitrification in domestic wastewater treatment obtained with PVA-SBQ/alginate gel entrapment. Water Research
Academic article
Moen, Einar; Larsen, Bjørn; Østgaard, Kjetill. (1997) Aerobic microbial degradation of alginate in Laminaria hyperborea stipes containing different levels of polyphenols. Journal of Applied Phycology
Academic article
Moen, Einar; Horn, Svein; Østgaard, Kjetill. (1997) Alginate degradation during anaerobic digestion of Laminaria hyperborea stipes. Journal of Applied Phycology
Academic article
Moen, Einar; Østgaard, Kjetill. (1997) Aerobic digestion of Ca-alginate gels studies as a model system of seaweed tissue degradation. Journal of Applied Phycology
Academic article
Rødde, Ruth Solveig Hagen; Østgaard, Kjetill; Larsen, Bjørn. (1997) Chemical composition of protoplasts of Laminaria digitata (Phaeophyceae). Botanica Marina
Academic article
Moen, Einar; Horn, Svein; Østgaard, Kjetill. (1997) Biological degradation of Ascophyllum nodosum. Journal of Applied Phycology
Academic article
Østgaard, Kjetill. (1993) Determination of alginate composition by a simple enzymatic assay. Hydrobiologia
Academic article
Sydnes, Leiv K.; Hemmingsen, J.H.; Skare, S.; Hansen, S.; Falk-Petersen, Inger-Britt; Lønning, S.. (1985) Seasonal variations in weathering and toxicity of crude oil on seawater under Arctic conditions. Environmental Science and Technology
Academic article

Report

Nordgård, Anna Synnøve Røstad; Bakke, Ingrid; Bakke, Rune; Østgaard, Kjetill. (2017) Microbial community analysis in developing biogas reactor technology for Norwegian agriculture. NTNU
Doctoral dissertation
Christensson, Magnus; Jönsson, Karin; Lee, Natuschka; Lie, Ewa; Johansson, Per; Welander, Thomas. (1995) Utv@ærdering av biologisk fosforavskiljning vid @Øresundsverket i Helsingborg : processtekniska och mikrobiologiska aspekter. VA-FORSK-serien (1995-04)
Report

Knowledge Transfer

2019

Lecture

Østgaard, Kjetill. (2019) Vår historiske bruk av tang og tare. IBT IBT's weekly Department lunch , IBT's lunch room, NV Faculty, NTNU, Gløshaugen 2019-02-13 -

2017

Interview

Hamann, Thorsten; Østgaard, Kjetill. (2017) Noen fagfolk er skeptiske. Gudbrandsdølen Dagningen Gudbrandsdølen Dagningen [Newspaper] 2017-05-08

2016

Poster

Bakke, Ingrid; Nordgård, Anna Synnøve Røstad; Bergland, Wenche Hennie; Vadstein, Olav; Mironov, Vladimir; Østgaard, Kjetill. (2016) Microbial community dynamics in anaerobic digestion at high ammonia concentrations. International Society of Microbial Ecology International Symposium on Microbial Ecology ISME 16 , Montreal 2016-08-21 - 2016-08-26
Poster

Vadstein, Olav; Gonzalez Silva, Blanca Magdalena; Jonassen, Kjell Rune; Østgaard, Kjetill; Bakke, Ingrid. (2016) Effect of salinity and salinity change on microbial community assembly and nitrification activity. International Symposium on Microbial Ecology ISME 16 2016-08-21 - 2016-08-26

2015

Lecture

Gonzalez Silva, Blanca Magdalena; Jonassen, Kjell Rune; Bakke, Ingrid; Østgaard, Kjetill; Vadstein, Olav. (2015) Nitrification at different salinities: biofilm community composition and physiological plasticity . IWA Nutrient Removal and Recovery 2015: Moving innovation into practice 2015-05-18 - 2015-05-21
Lecture

Gonzalez Silva, Blanca Magdalena; Rønning, Are Johan; Andreassen, Ingrid Krogrud; Bakke, Ingrid; Østgaard, Kjetill; Cervantes, Francisco J.. (2015) Adaptation of a freshwater Anammox consortium to marine conditions to achieve nitrogen removal. 14th World Congress on Anaerobic Digestion 2015-11-15 - 2015-11-18

2014

Poster

Nordgård, Anna Synnøve Røstad; Bergland, Wenche Hennie; Bakke, Rune; Østgaard, Kjetill; Bakke, Ingrid. (2014) Microbial community changes in granule-based UASB reactors due to substrate and load changes. 2nd International Conference on Biogas Microbiology ICBM , Uppsala 2014-06-10 - 2014-06-12

2012

Interview

Olsen, Yngvar; Skjermo, Jorunn; Aasen, Inga-Marie; Østgaard, Kjetill. (2012) Fra tanke til tank. Adresseavisen - Bil & trafikk Adresseavisen - Bil & trafikk [Newspaper] 2012-03-20
Poster

Nordgård, Anna Synnøve Røstad; Bakke, Ingrid; Brakstad, Odd Gunnar; Østgaard, Kjetill. (2012) Detection of methanogenic archaea in DGGE by the use of primers for Methyl-Coenzyme M Reductase A (mcrA) genes. Energinet.dk Nordic Biogas Conference , Copenhagen 2012-04-23 - 2012-04-25

2008

Academic lecture

Vadstein, Olav; Østgaard, Kjetill. (2008) Miljøbioteknologi. TEKNA Biologiseminar , Trondheim 2008-04-08 - 2008-04-08

2001

Poster

Rasmussen, Kjetil; Østgaard, Kjetill. (2001) Adhesion of the marine fouling diatom Amphora coffeaeformis to non-solid gel surfaces. Workshop on environmentally friendly marine coatings , Göteborg, Sweden 2001-10-19 -

1998

Popular scientific lecture

Østgaard, Kjetill. (1998) Miljøbehandling. Bioteknologinemndas 12. åpne møte den 18. mars 1998 , [Mangler data]

Språkvelger

Kjetill Østgaard