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  • 1.
    Bienert, Kathrin
    et al.
    Deutsches Biomasseforschungszentrum Gemeinnützige GmbH, Germany.
    Schumacher, Britt
    Deutsches Biomasseforschungszentrum Gemeinnützige GmbH, Germany.
    Arboleda, Martin
    Deutsches Biomasseforschungszentrum Gemeinnützige GmbH, Germany; Helmholtz Centre for Environmental Research, Germany.
    Billig, Eric
    Helmholtz Centre for Environmental Research, Germany.
    Shakya, Semiksha
    Deutsches Biomasseforschungszentrum Gemeinnützige GmbH, Germany.
    Rogstrand, Gustav
    RISE - Research Institutes of Sweden, Bioscience and Materials, Agrifood and Bioscience.
    Zielinski, Marcin
    University of Warmia and Mazury in Olsztyn, Poland.
    Debowski, Marcin
    University of Warmia and Mazury in Olsztyn, Poland.
    Multi-indicator assessment of innovative small-scale biomethane technologies in Europe2019In: Energies, ISSN 1996-1073, E-ISSN 1996-1073, Vol. 12, no 7, article id 1321Article in journal (Refereed)
    Abstract [en]

    Innovative small-scale biogas plants, including upgrading solutions to affordable biomethane, are necessary to tap into the spatially distributed potentials of organic waste. This research identified and assessed novel small-scale technologies before market-entry maturity in the key process steps of the biomethane chain. We assessed technical, economic, and ecological indicators, and compared them to larger-scale references. The assessment included 7 pre-treatment, 13 digester, and 11 upgrading systems all at the small scale. We collected recently available data for Europe (2016–2018) for small-scale technologies (<200 m 3 ; raw biogas per hour). In the literature we did not find such a comprehensive assessment of actual European small-scale innovative non-market-ready technologies for the production of biomethane. Several conclusions were drawn for each of the individual process steps in the biomethane chain, e.g., the economic indicator calculated for the upgrading technologies shows that the upgrading costs, for some of them, are already close to the larger-scale reference (about 1.5 €ct/kWh raw biogas). Furthermore, biomethane production is absolutely context-specific, which dramatically limits the traditional way to evaluate technologies. Hence, new ways of integration of the technologies plays a major role on their future

  • 2.
    Eriksson, Ola
    et al.
    University of Gävle, Sweden.
    Hadin, Åsa
    University of Gävle, Sweden.
    Hennessy, Jay
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi. University of Mälardalen, Sweden.
    Jonsson, Daniel
    University of Gävle, Sweden.
    Life cycle assessment of horse manure treatment2016In: Energies, ISSN 1996-1073, E-ISSN 1996-1073, Vol. 9, no 12, article id 1011Article in journal (Refereed)
    Abstract [en]

    Horse manure consists of feces, urine, and varying amounts of various bedding materials. The management of horse manure causes environmental problems when emissions occur during the decomposition of organic material, in addition to nutrients not being recycled. The interest in horse manure undergoing anaerobic digestion and thereby producing biogas has increased with an increasing interest in biogas as a renewable fuel. This study aims to highlight the environmental impact of different treatment options for horse manure from a system perspective. The treatment methods investigated are: (1) unmanaged composting; (2) managed composting; (3) large-scale incineration in a waste-fired combined heat and power (CHP) plant; (4) drying and small-scale combustion; and (5) liquid anaerobic digestion with thermal pre-treatment. Following significant data uncertainty in the survey, the results are only indicative. No clear conclusions can be drawn regarding any preference in treatment methods, with the exception of their climate impact, for which anaerobic digestion is preferred. The overall conclusion is that more research is needed to ensure the quality of future surveys, thus an overall research effort from horse management to waste management.

  • 3.
    Keucken, Alexander
    et al.
    Vatten & Miljö i Väst AB, Sweden.
    Habagil, Moshe
    Vatten & Miljö i Väst AB, Sweden.
    Batstone, Damien
    University of Queensland, Australia.
    Jeppsson, Ulf
    Lund University, Sweden.
    Arnell, Magnus
    RISE - Research Institutes of Sweden, Built Environment, Energy and Circular Economy.
    Anaerobic Co-Digestion of Sludge and Organic FoodWaste — Performance, Inhibition, and Impact on theMicrobial Community2018In: Energies, ISSN 1996-1073, E-ISSN 1996-1073, Vol. 11, no 9, article id 2325Article in journal (Refereed)
    Abstract [en]

    Anaerobic co-digestion allows for under-utilised digesters to increase biomethane production. The organic fraction of municipal solid waste (OFMSW), i.e., food waste, is an abundant substrate with high degradability and gas potential. This paper investigates the co-digestion of mixed sludge from wastewater treatment plants and OFMSW, through batch and continuous labscale experiments, modelling, and microbial population analysis. The results show a rapid adaptation of the process, and an increase of the biomethane production by 20% to 40%, when codigesting mixed sludge with OFMSW at a ratio of 1:1, based on the volatile solids (VS) content. The introduction of OFMSW also has an impact on the microbial community. With 50% co-substrate and constant loading conditions (1 kg VS/m3/d) the methanogenic activity increases and adapts towards acetate degradation, while the community in the reference reactor, without a co-substrate, remains unaffected. An elevated load (2 kg VS/m3/d) increases the methanogenic activity in both reactors, but the composition of the methanogenic population remains constant for the reference reactor. The modelling shows that ammonium inhibition increases at elevated organic loads, and that intermittent feeding causes fluctuations in the digester performance, due to varying inhibition. The paper demonstrates how modelling can be used for designing feed strategies and experimental setups for anaerobic co-digestion.

  • 4. Svens, P.
    et al.
    Kjell, M.H.
    Tengstedt, C.
    Flodberg, Göran
    RISE, Innventia.
    Lindbergh, G.
    Li-ion pouch cells for vehicle applications-studies of water transmission and packing materials2013In: Energies, ISSN 1996-1073, E-ISSN 1996-1073, no 1, p. 400-410Article in journal (Refereed)
  • 5.
    Ylmen, Peter
    et al.
    RISE - Research Institutes of Sweden, Built Environment, Building Technology.
    Peñaloza, Diego
    IVL Swedish Environmental Research Institute, Sweden.
    Mjörnell, Kristina
    RISE - Research Institutes of Sweden, Built Environment, Building Technology.
    Life Cycle Assessment of an Office Building Based on Site-Specific Data2019In: Energies, ISSN 1996-1073, E-ISSN 1996-1073, Vol. 12, no 13, article id 2588Article in journal (Refereed)
    Abstract [en]

    Life cycle assessment (LCA) is an established method to assess the various environmental impacts associated with all the stages of a building. The goal of this project was to calculate the environmental releases for a whole office building and investigate the contribution in terms of environmental impact for different parts of the building, as well as the impact from different stages of the life cycle. The construction process was followed up during production and the contractors provided real-time data on the input required in terms of building products, transport, machinery, energy use, etc. The results are presented for five environmental impact categories and, as expected, materials that constitute the main mass of the building and the energy used during operation contribute the largest share of environmental impact. It is usually difficult to evaluate the environmental impact of the materials in technical installations due to the lack of data. However, in this study, the data were provided by the contractors directly involved in the construction and can, therefore, be considered highly reliable. The results show that materials for installations have a significant environmental impact for four of the environmental impact categories studied, which is a noteworthy finding.

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