Ole Jørgen Hanssen

Prof. Dr. Ole Jørgen Hanssen

Faculty of Environmental Science and Management of Natural Resources, Ostfold Research and Norwegian University of Life Science

Research Focus & Metrics

Academic Career Length

18Years (2009-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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9 March 2020 in Resources
Verified
Journal Article
Open access
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PBPauline Bergström
Pauline Bergström
CMChristopher Malefors
Christopher Malefors
ISIngrid Strid
Ingrid Strid
OHOle Jørgen Hanssen
Ole Jørgen Hanssen
MEMattias Eriksson
Mattias Eriksson
Food banks that redistribute surplus food from retailers and the food industry to people in need are not a new concept globally, but their connection to food waste prevention is new. As a result, new types of food redistribution units are emerging and diversifying to find new target groups and distribution methods. The aim of this study was to identify and study surplus food redistribution units in Sweden, and then to assess the impact on several sustainability indicators for selected redistribution units, in order to increase knowledge on the types of values these redistribution concepts generate. The methods used for analyzing the scenarios were Environmental Life Cycle Assessment, Life Cycle Costing and Social Life Cycle Assessment. The results showed that providing food bags to socially exposed people generated the largest reduction of greenhouse gas emissions per kg of redistributed food (−1.2 kg CO2 eq./FU). Reprocessing surplus food to a high-quality end-product was attributed a high social value, due to job creation effects in the high number of working hours required per kg of redistributed food. With regard to economic impacts, all but two scenarios studied had monthly financial losses, and therefore needed other sources of financial support.

29 June 2018 in Sustainability
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Journal Article
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SØSofie Østergaard
Sofie Østergaard
OHOle Jørgen Hanssen
Ole Jørgen Hanssen
There are few scientific papers dealing with the packaging of fresh bread and consumer preferences as to the packaging. There are also few scientific papers on consumer behavior regarding shopping routines, storing, and the use of fresh bread in connection with food waste from households. The primary scope of this study has been to gain new understanding and expertise when comparing the characteristics of consumers who report no wasting of fresh bread with those who report wasting a significant quantity of fresh bread every week. In addition, the authors have identified and analyzed the main reasons for wasting fresh-packed bread in Norway, and the way in which those reasons relate to varying aspects of consumer behavior. This expertise is important for those working in the development, production, and sale of food. It will enable them to take effective measures relating to the various consumer groups so as to prevent the waste of bread by consumers. A web-based questionnaire has been employed, with 1000 respondents, in order to collect data for the analyses. There were significant differences between the groups who reported wasting a significant amount of bread (seven slices or more a week) and groups who wasted no fresh bread at all. This was especially noticeable when focusing on age and household size. Other factors were shopping behavior, and the freezing and toasting of bread at home, which can minimize the wasting of bread. Low wasters employ clear strategies to avoid food waste (freezing, re-packing, and shopping) and these strategies are not seen in the group of high-wasters. The findings from this study may provide useful insight for those working with the development of packaging and products in the food industry, as well as those in the retail sector, as it identifies consumer preferences, viewpoints on packaging and attitudes towards the freshness of bread. As a sizeable group of consumers in this study stated that they use an additional plastic bag in addition to the original packaging, it is clear that consumers do not perceive the original packaging as being good enough to preserve the quality of fresh bread.

21 December 2018 in Sustainability
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Journal Article
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ESErik Svanes
Erik Svanes
SØSofie Østergaard
Sofie Østergaard
OHOle Jørgen Hanssen
Ole Jørgen Hanssen
Bread is a staple food in Norway, with a yearly per capita consumption of 52 kg. It is an important source of energy, dietary fibre and protein as well as certain minerals and vitamins. Previous studies have shown that bread has a relatively low environmental impact compared with other foods. Food waste studies, however, have shown that bread and other baked goods have a high wastage rate in Norway. On the basis of lower Norwegian wheat yields, it is therefore expected that the environmental impact of bread could be higher than in other European countries. The purpose of this study was to assess the environmental impact of bread from cradle to grave, identify environmental hotspots, examine the role of packaging in bread waste and identify possible remediation measures with a particular focus on the post-farm value chain. The results showed that for every kilogram of bread consumed, the global warming potential was 0.99 kg CO2-eq, the eutrophication potential was 7.2 g PO4-eq, the acidification potential was 8.4 g SO2-eq and the cumulative energy demand was 18 MJ. The principal uncertainty within the calculation was the use of database data for the 21 ingredients. For example, the effect of soil mineralisation, which could give significant CO2 and N2O emissions, was not included because figures have only been quantified for a few ingredients and there is no international agreement on the methodology. The primary hotspot was the production of the ingredients, principally at the agricultural stage, while bread waste took the second place. The highest potential for the reduction of post-farm environmental impact lies in reducing product wastage at the retail and consumer stages. Consumers already employ strategies to reduce wastage, such as using extra packaging and freezing and toasting bread. This study shows that other consumer packaging solutions can keep the bread fresh for longer, thus reducing wastage and the need for the abovementioned consumer strategies. Nevertheless, other researches in this subject have shown that consumer preferences and behaviours play a significant role in the creation of bread waste, and this should therefore be taken into account when planning reduction measures.

22 January 2018 in Sustainability
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Journal Article
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KLKari-Anne Lyng
Kari-Anne Lyng
MBMia Bjerkestrand
Mia Bjerkestrand
ASAina Elstad Stensgård
Aina Elstad Stensgård
PCPieter Callewaert
Pieter Callewaert
OHOle Jørgen Hanssen
Ole Jørgen Hanssen
An optimisation model was developed to give decision support on methods of managing manure resources within a region to reduce greenhouse gases and at the same time obtain economic profitability for the farmer. The model was tested by performing a case study on 50 farms in one region in Norway. Based on input data on the number of cattle and pigs on each farm, and the transport distance between each farm and the nearest centralised biogas plant, the model calculates the economic profit of the farmer and the greenhouse gas emissions for three manure management alternatives: (1) no biogas production; (2) farm scale biogas production; and (3) centralised biogas production. The model could minimise the greenhouse gas emissions, maximise the profit for the farmers or a combination of the two. Results from the case study showed that both options for anaerobic digestion (farm scale and centralised biogas production) are beneficial in terms of the reduction of greenhouse gases and can be profitable for the farmers. The case study has validated the functionality and usefulness of the model. Some improvements are suggested for further development and use.

1 May 2018 in Journal of Cleaner Production
Verified
Journal Article
Closed access
CVClara Valente
Clara Valente
ESEllen Soldal
Ellen Soldal
FJFredrik Moltu Johnsen
Fredrik Moltu Johnsen
FVFelipe Verdú
Felipe Verdú
HRHanne Lerche Raadal
Hanne Lerche Raadal
OHOle Jørgen Hanssen
Ole Jørgen Hanssen

1 July 2009 in Energies
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Journal Article
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HRHanne Lerche Raadal
Hanne Lerche Raadal
CNCecilia Askham Nyland
Cecilia Askham Nyland
OHOle Jørgen Hanssen
Ole Jørgen Hanssen
According to the Electricity Directive, suppliers of electricity must disclose their electricity portfolio with regards to energy source and environmental impact. This paper gives some examples of disclosure systems and residual electricity mixes in Norway, Sweden and Finland, compared to an approach based on a common regional disclosure. Disclosures based on the E-TRACK standard are presented, as well as the variation in CO2 emissions from different residual mixes. The results from this study clearly show that there is a need for a harmonised, transparent and reliable system for the accounting of electricity disclosure in Europe.