Et profilbilde

Førsteamanuensis
Roald Kommedal { "honorific-suffix": "Førsteamanuensis", "fn": "Roald Kommedal", "tel": "Telefon: 51831852", "email": "roald.kommedal@uis.no" }

Avdeling/enhet Det teknisk- naturvitenskapelige fakultet
Institutt/senter Institutt for matematikk og naturvitenskap
Rom KE C-218

Educational responsibilities

Program Coordinator MSc Environmental Technology

Group leader: Chemistry & Environment, IMN

 

Forskningsområder

Environmental Biotechnology

Water and Wastewater Treatment

Environmental Microbiology

Microbial Ecology

Environmental Science and Technology

Utvalgte publikasjoner

Ravndal K.T. and Kommedal R. (2017) Dynamics of starch degradation and intermediate formation in batch experiments using flocculated and dispersed activated sludge. Water Science and Technology  Aug 2017,  DOI: 10.2166/wst.2017.467

Kommedal R., Bagi A. and Hemmingsen T. Environmental Effects of Oil and Gas Exploration and Production in the Barents Sea, in: International Arctic Petroleum Cooperation: Barents Sea Scenarios (edited by Bourmistrov A., Mellemvik F, Bambulyak A., Gudmestad O.T., Overland I and Zolotukhin A.), Routledge Studies in Environmental Policy, Routledge, New Yok, 2015

Kataya A.R.A., Heidari B, Hagen L., Kommedal R., Slupphaug. G. and Lillo C. (2015). Protein Phosphatase 2A Holoenzyme Is Targeted to Peroxisomes by Piggybacking and Positively Affects Peroxisomal beta-Oxidation. Plant Physiology, (2): 493-U335

Bagi, A., D. M. Pampanin, A. Lanzén, T. Bilstad, and R. Kommedal (2014). Naphthalene Biodegradation in Temperate and Arctic Marine Microcosms. Biodegradation, (1): 111-125

Bagi, A., D. M. Pampanin, O. G. Brakstad, and R. Kommedal (2013). "Estimation of Hydrocarbon Biodegradation Rates in Marine Environments: A Critical Review of the Q10 Approach." Marine Environmental Research 89: 83-90.


Pågående forskning

Psychrophilic and Barophilic marine biodegradation of hydrocarbons

Depolymerisation of particulate and polymeric organic substances

Biodegradation of production chemicals

Biofilm Detachment

Constructed Wetlands and Natural Water Systems

Arbeidserfaring

Vitenskapelige publikasjoner (fra CRISTin)

  • Kommedal, Roald; Krahner, Friederike (2017). Retention and biological uptake of phosphorous in the Leikvollbekken constructed wetland.. UiS.
  • Kommedal, Roald (2004). Degradation of polymeric and particulate organic carbon in biofilms. Norges teknisk-naturvitenskapelige universitet. 1 s.
  • Kommedal, Roald; Bakke, Rune (2003). Modeling Pseudomonas aerugionsa biofilm detachment. Høgskolen i Telemark. 29 s.
  • Kommedal, Roald (2017). Occurrence and fate of priority organic pollutants during wastewater sludge treatment. 2017-06-06.
  • Kommedal, Roald; Opsahl, Eystein (2017). Fate and effects of synthetic polymers - the sub-micro-plastic problem.. University of Stavanger, IRIS, RachelCarsonprisen.no; 2017-10-04.
  • Kommedal, Roald; Opsahl, Eystein (2017). Polymer and Particle Degradation in Seawater - Marine fate of synthetic polymers used for IOR. 2017-10-31 - 2017-11-13.
  • Kommedal, Roald; Opsahl, Eystein (2017). Polymer and particle degradation in the seawater. Ambassaden/gen.konsul Rio BZ og innovasjon NO; 2017-11-06 - 2017-11-07.
  • Christ, Inge; Kommedal, Roald (2016). Biogassforskning ved UiS. https://youtu.be/UrnI9-dZnUw. [Internett]; 2016-10-06.
  • Handley, Bianca; Molversmyr, Åge; Kommedal, Roald (2016). Constructed wetlands for agricultural runoff remediation – effects on bioavailability of phosphorus. International Society of Limnology; 2016-07-31 - 2016-08-05.
  • Haws, Anne Marie; Kommedal, Roald; Enge, Espen; Hill, Helene H (2016). Annual Phosphorus Retention Efficiency of a Constructed Wetland Treating Diffuse Agricultural Runoff. International Society of Limnology; 2016-07-31 - 2016-08-05.
  • Kommedal, Roald (2016). Biologisk energiproduksjon. Universitetet i Stavanger; 2016-11-13.
  • Kommedal, Roald (2016). Fosforfangst i våtmarksplanter – Hvor mye kan fjernes?. Universitetet i Stavanger; 2016-11-08.
  • Kommedal, Roald (2016). Leikvollbekken – Fosforbalanse og renseeffekt. Universitetet i Stavanger; 2016-11-08.
  • Kommedal, Roald (2016). Will we find ET and would we know?. i/o/lab; 2016-03-10 - 2016-03-13.
  • Kommedal, Roald; Ydstebø, Leif; Bilstad, Torleiv (2016). Occurrence and Fate of Priority Organica Pollutants during Wastewater Sludge Treatment. Technical Unievrsity of Crete; 2016-09-27 - 2016-09-30.
  • Kommedal, Roald; Ydstebø, Leif; Bilstad, Torleiv (2016). Occurrence and fate of priority organic pollutants during wastewater sludge treatment.
  • Opsahl, Eystein; Kommedal, Roald (2016). Environmental fate and effects of polymer produced water. Technical University of Crete; 2016-09-27 - 2016-10-01.
  • Opsahl, Eystein; Kommedal, Roald (2016). Environmental fate and effects of polymer produced water II. Technical University of Crete; 2016-09-27 - 2016-10-01.
  • Wold, Anders; Ydstebø, Leif; Kommedal, Roald; Løklingholm, Martin; Bilstad, Torleiv (2016). Anaerobic treatment of slop water.
  • Kommedal, Roald (2015). Biologisk nedbrytbarhet: Forsøksdesign og Dataanalyse. Universitetet i Stavanger; 2015-11-13.
  • Kommedal, Roald (2015). Polymers in the Environment - Fate and Effects. National IOR center UiS; 2015-11-13.
  • Kommedal, Roald; Ulas, Mona; Bagi, Andrea; Kaster, Krista Michelle (2015). The Effects of Corexit 9500 on Oil Biodegradation at Cold Temperatures.
  • Bagi, Andrea; Pampanin, Daniela M.; Lanzén, Anders; Bilstad, Torleiv; Kommedal, Roald (2014). Arctic bacteria are “as good as” temperate counterparts in removing toxic oil components from the marine environment. 2014-10-22 - 2014-10-24.
  • Kommedal, Roald (2014). 100-års jubileum for den viktigste oppfinnelsen i rensing av vann. Universitetet i Stavanger; 2014-09-28.
  • Kommedal, Roald (2014). Aktivt Slam Prosessen - Ny, gammel renseteknologi. Universitetet i Stavanger; 2014-03-11.
  • Madland, Merete Vadla; Kommedal, Roald; Hiorth, Aksel (2014). Meeting at UiS 16. June 2014 Professor Johan Sjøblom (Ugelstad Laboratory, NTNU). University of Stavanger; 2014-06-16.
  • Madland, Merete Vadla; Kommedal, Roald; Hiorth, Aksel (2014). The National IOR Centre of Norway - Research highlights abd ambitions. 2014-11-04.
  • Wold, Anders; Ydstebø, Leif; Kommedal, Roald; Løklingholm, Martin; Bilstad, Torleiv (2014). Effect of Sodium on anaerobic treatment of Ethylene Glycol. IWWG; 2014-09-02 - 2014-09-05.
  • Kommedal, Roald (2013). Hvem, Hva, Hvor (mye)? GCMS: Miljøkjemikerens orjanisk foretrukne.... Universitetet i Stavanger; 2013-11-13.
  • Ravndal, Kristin Torgersen; Kommedal, Roald (2013). Bacterial polymer degradation in natural river water. IWA; 2013-10-01 - 2013-10-04.
  • Bagi, Andrea; Lanzén, Anders; Bilstad, Torleiv; Kommedal, Roald (2012). Naphthalene degrading prokaryotic communities of Arctic and Temperate seas. International Society for Microbial Ecology; 2012-08-19 - 2012-08-24.
  • Kelland, Malcolm Andrew; Hoogenboom, Richard; Del Villano, Luca; Kommedal, Roald; Schubert, Ulrich S.; Fijten, Martin W. M. (2012). POLY(2-OXAZOLINE)S AS KINETIC GAS HYDRATE INHIBITORS. ACS; 2012-03-25 - 2012-03-29.
  • Kommedal, Roald (2012). Hydrolysis of particulate and polymeric substances in biofilms. EAWAG, ETH; 2012-11-29 - 2012-11-30.
  • Kommedal, Roald (2012). Olje og Miljøsikkerhet. Artic Biennalen 2012; 2012-10-12 - 2012-10-14.
  • Ravndal, Kristin Torgersen; Bagi, Andrea; Kommedal, Roald (2012). The effect of hydrostatic pressure on biodegradation of a mixture of benzene, toluene, ethylbenzene and o-xylene. International society for microbial ecology; 2012-08-19 - 2012-08-24.
  • Ravndal, Kristin Torgersen; Kommedal, Roald (2012). A quantitative model of bacterial particle and polymer degradation in aquatic systems. Internation society for microbial ecology; 2012-08-19 - 2012-08-24.
  • Kommedal, Roald; Bagi, Andrea; Bilstad, Torleiv; Brakstad, O.G. (2010). Biodegradation of naphthalene in Temperate and Arctic marine environment. 2010-08-22 - 2010-08-27.
  • Kelland, Malcolm; Kommedal, Roald; Del Villano, Luca (2008). A Class Of Kinetic Hydrate Inhibitor With Good Biodegradability. 2008-07-06 - 2008-07-10.
  • Morgenroth, E.; Kommedal, Roald; Harremoes, P. (2001). Process and modeling of hydrolysis of particulate organic matter in aerobic wastewater treatment : a review. 2001-11-10 - 2001-11-12.
  • Kommedal, Roald (2000). Pseudonas aeruginosa biofilm detachment. IWA; 2000-09-18 - 2000-09-20.
  • Kommedal, Roald; Bakke, Rune (2000). Modelling production of extracellular polymeric substances in a Pseudomonas aeruginosa chemostat culture. IWA; 2000-09-18 - 2000-09-20.
  • Kommedal, Roald; Thorbjørnsen, T.; Bakke, Rune (1999). Hydrolysis of adsorbed particulate organic matter in arobic films. IWA; 1999-10-17 - 1999-10-21.