John Morken

• 1. Teknologi for biogassbehandling av organiske materialer (forbehandling - reaktorteknolgi - etterbehandling)
• 2. LCA og avfallshåndtering
• 3. Bioenergi
• 3. Bioenergi 4. Tilføringsteknikker for avfallsfraksjoner på jord

Forskerprofil med publikasjoner i vitenarkivet

Et utvalg av nyere tidsskriftspublikasjoner.

• Ucar, Deniz, John Morken, Melesse Eshetu_Moges, og Nazli Pelin Kocatürk Schumacher. «Impacts of aquaculture RAS effluent source on treatment performance, microalgal growth, and biomass feed value». Journal of Environmental Management (JEM) 401 (februar 2026). https://doi.org/10.1016/j.jenvman.2026.128890.
• Senol, Abdullah Bugra, Linn Solli, John Morken, Wietske Annechien Stel, og Nazli Pelin Kocatürk Schumacher. «Influence of biochar and zeolite on biochemical methane potential in saline aquaculture sludge». Bioresource Technology 449 (mars 2026). https://doi.org/10.1016/j.biortech.2026.134345.
• Gebreegziabher, Blen Weldegebreal, John Morken, Amare Aregahegn Dubale, og Muyiwa S. Adaramola. «Characterization of Cold-pressed Argemone Mexicana Seed Oil, Seed Residue Briquetting and Free Fatty Acid Reduction through Glycerolysis». Bioresource Technology Reports, forhåndspublisert på nett, 2026. https://doi.org/10.1016/j.biteb.2026.102710.
• Gebreegziabher, Blen Weldegebreal, Muyiwa S. Adaramola, John Morken, og Amare Aregahegn Dubale. «Optimization of Solid-Liquid Extraction: Solvent Effects on the Fatty Acid Composition and Physicochemical Properties of Argemone mexicana Seed Oil and Valorization of Seed Residue». Industrial crops and products (Print) 233 (2025). https://doi.org/10.1016/j.indcrop.2025.121468.
• Seboka, Ararsa Derese, John Morken, Muyiwa S. Adaramola, Gebresilassie Asnake Ewunie, og Lu Feng. «Optimization of briquetting parameters and their effects on thermochemical fuel properties of biowaste briquettes». Bioresource Technology 439 (september 2025). https://doi.org/10.1016/j.biortech.2025.133277.
• Seboka, Ararsa Derese, Lu Feng, John Morken, Muyiwa S. Adaramola, Getachew Birhanu Abera, og Gebresilassie Asnake Ewunie. «Assessing energy consumption patterns and biowaste generation in southern Ethiopian hotels and universities: towards sustainable energy solutions». Discover Sustainability 6, nr. 1 (2025). https://doi.org/10.1007/s43621-025-01099-8.
• Seboka, Ararsa Derese, Gebresilassie Asnake Ewunie, John Morken, Lu Feng, og Muyiwa S. Adaramola. «Potentials and prospects of solid biowaste resources for biofuel production in Ethiopia: a systematic review of the evidence». Biomass Conversion and Biorefinery, forhåndspublisert på nett, november 2023. https://doi.org/10.1007/s13399-023-04994-0
• Ewunie, Gebresilassie Asnake, Odd Ivar Lekang, John Morken, og Zerihun Demrew Yigezu. «Characterizing the potential and suitability of Ethiopian variety Jatropha curcas for biodiesel production: Variation in yield and physicochemical properties of oil across different growing areas». Energy Reports 7 (2021): 439–52. https://doi.org/10.1016/j.egyr.2021.01.007.
• Ewunie, Gebresilassie Asnake, John Morken, Odd Ivar Lekang, og Zerihun Demrew Yigezu. «Factors affecting the potential of Jatropha curcas for sustainable biodiesel production: A critical review». Renewable and Sustainable Energy Reviews 137 (2021): 1–18. https://doi.org/10.1016/j.rser.2020.110500.
• Ewunie, Gebresilassie Asnake, Zerihun Demrew Yigezu, og John Morken. «Biochemical methane potential of Jatropha curcas fruit shell: comparative effect of mechanical, steam explosion and alkaline pretreatments». Biomass Conversion and Biorefinery, forhåndspublisert på nett, 2021. https://doi.org/10.1007/s13399-020-01159-1.
• Ewunie, Gebresilassie Asnake, Zerihun Demrew Yigezu, og John Morken. «Biochemical methane potential of Jatropha press cake: Effect of steam explosion pretreatment and co-digestion with crude glycerol». Journal of Renewable and Sustainable Energy 12, nr. 6 (2020). https://doi.org/10.1063/5.0005935.
• Ewunie, Gebresilassie Asnake, John Morken, og Zerihun Demrew Yigezu. «Alkaline and co-digestion pretreatments: process optimization for enhancing the methane yield of Jatropha press cake». Biomass Conversion and Biorefinery, forhåndspublisert på nett, 2020. https://doi.org/10.1007/s13399-020-00732-y.
• Neba, Fabrice Abunde; Nana, Aseidu; Ahmad, Addo; Morken, John; Østerhus, Stein Wold; Seidu, Razak. (2020) Biodigester Rapid Analysis and Design System (B-RADeS): A candidate attainable region-based simulator for the synthesis of biogas reactor structures. Computers and Chemical Engineering. vol. 132.
• Fjørtoft, Kristian; Morken, John; Hanssen, Jon Fredrik; Briseid, Tormod. (2019) Pre-treatment methods for straw for farm-scale biogas plants. Biomass & Bioenergy. vol. 124.
• Neba, Fabrice Abunde; Asiedu, Nana Yaw; Addo, Ahmad; Morken, John; Østerhus, Stein Wold; Seidu, Razak. (2019) Simulation of two-dimensional attainable regions and its application to model digester structures for maximum stability of anaerobic treatment process. Water Research. vol. 163:114891.
• Neba, Fabrice Abunde; Asiedu, Nana Yaw; Addo, Ahmad; Morken, John; Østerhus, Stein Wold; Seidu, Razak. (2019) Use of attainable regions for synthesis and optimization of multistage anaerobic digesters. Applied Energy. vol. 242.
• Kemausuor, Francis; Adaramola, Muyiwa S.; Morken, John. (2018) A review of commercial biogas systems and lessons for Africa. Energies. vol. 11 (11).
• Morken, John; Gjetmundsen, Magnus Olimstad; Fjørtoft, Kristian. (2017) Determination of kinetic constants from the co-digestion of dairy cow slurry and municipal food waste at increasing organic loading rates. Renewable Energy. vol. 117.
• Lyng, Kari-Anne; Modahl, Ingunn Saur; Møller, Hanne; Morken, John; Briseid, Tormod; Hanssen, Ole Jørgen. (2015) The BioValueChain model: a Norwegian model for calculating environmental impacts of biogas value chains. The International Journal of Life Cycle Assessment. vol. 20 (4).
• Estevez, Maria Magdalena; Linjordet, Roar; Horn, Svein Jarle; Morken, John. (2014) Improving nutrient fixation and dry matter content of an ammonium-rich anaerobic digestion effluent by struvite formation and clay adsorption. Water Science and Technology. vol. 70 (2).
• Estevez, Maria Magdalena; Sapci, Zehra; Linjordet, Roar; Morken, John. (2014) Incorporation of fish by-product into the semi-continuous anaerobic co-digestion of pre-treated lignocellulose and cow manure, with recovery of digestate's nutrients. Renewable Energy. vol. 66.
• Estevez, Maria Magdalena; Sapci, Zehra; Linjordet, Roar; Schnürer, Anna; Morken, John. (2014) Semi-continuous anaerobic co-digestion of cow manure and steam-exploded Salix with recirculation of liquid digestate. Journal of Environmental Management. vol. 136.
• Fjørtoft, Kristian; Morken, John; Hanssen, Jon Fredrik; Briseid, Tormod. (2014) Methane production and energy evaluation of a farm scaled biogas plant in cold climate area. Bioresource Technology. vol. 169.
• Morken, John; Sapci, Zehra. (2013) Evaluating biogas in Norway - bioenergy and greenhouse gas reduction potentials. E-journal CIGR. vol. 15 (2).
• Morken, John; Sapci, Zehra; Strømme, Jon Eivind. (2013) Modeling of biodiesel production in algae cultivation with anaerobic digestion (ACAD). Energy Policy. vol. 60.
• Sapci, Zehra; Morken, John; Linjordet, Roar. (2013) An investigation of the enhancement of biogas yields from lignocellulosic material using two pretreatment methods: Microwave irradiation and steam explosion. BioResources. vol. 8 (2).
• Estevez, Maria Magdalena; Linjordet, Roar; Morken, John. (2012) Effects of steam explosion and co-digestion in the methane production from Salix by mesophilic batch assays. Bioresource Technology. vol. 104.
• Vatn, Arild; Bakken, Lars R.; Bleken, Marina Azzaroli; Baadshaug, Ole Hans; Fykse, Haldor; Haugen, Lars Egil; Lundekvam, Helge; Morken, John; Romstad, Eirik; Rørstad, Per Kristian; Skjelvåg, Arne Oddvar; Sogn, Trine A. (2006) A methodology for integrated economic and environmental analysis of pollution from agriculture. Agricultural Systems. vol. 88.
• Morken, John; Sørby, Bernt; Sørby, Ivar; Birkeland, Knut; Sakshaug, Stein. (2005) Bruk av bioenergi i landbruket. Er det lønnsomt å bygge gårdsbiogassanlegg, og hvilke fordeler kan bonden og samfunnet oppnå?. Grønn forskning. vol. 9 (121).
• Morken, John; Sakshaug, Stein. (1998) Direct Ground Injection (DGI) of slurry to avoid ammonia emission. ?. vol. 51.
• Morken, John; Witney, Brian. (1998) Direct Ground Injection - a novelty on slurry injection. ?. vol. 53 (4).

Full liste i Cristin

Mine publikasjoner

• <font>