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Lindgren, Robert
Publications (10 of 12) Show all publications
Carvalho, R. L., Yadav, P., García-López, N., Lindgren, R., Nyberg, G., Diaz-Chavez, R., . . . Athanassiadis, D. (2020). Environmental Sustainability of Bioenergy Strategies in Western Kenya to Address Household Air Pollution. Energies, 13(3), Article ID 719.
Open this publication in new window or tab >>Environmental Sustainability of Bioenergy Strategies in Western Kenya to Address Household Air Pollution
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2020 (English)In: Energies, ISSN 1996-1073, E-ISSN 1996-1073, Vol. 13, no 3, article id 719Article in journal (Refereed) Published
Abstract [en]

Over 640 million people in Africa are expected to rely on solid-fuels for cooking by 2040. In Western Kenya, cooking inefficiently persists as a major cause of burden of disease due to household air pollution. Efficient biomass cooking is a local-based renewable energy solution to address this issue. The Life-Cycle Assessment tool Simapro 8.5 is applied for analyzing the environmental impact of four biomass cooking strategies for the Kisumu County, with analysis based on a previous energy modelling study, and literature and background data from the Ecoinvent and Agrifootprint databases applied to the region. A Business-As-Usual scenario (BAU) considers the trends in energy use until 2035. Transition scenarios to Improved Cookstoves (ICS), Pellet-fired Gasifier Stoves (PGS) and Biogas Stoves (BGS) consider the transition to wood-logs, biomass pellets and biogas, respectively. An Integrated (INT) scenario evaluates a mix of the ICS, PGS and BGS. In the BGS, the available biomass waste is sufficient to be upcycled and fulfill cooking demands by 2035. This scenario has the lowest impact on all impact categories analyzed followed by the PGS and INT. Further work should address a detailed socio-economic analysis of the analyzed scenarios.

Place, publisher, year, edition, pages
MDPI, 2020
Keywords
agroforestry, waste valorization, sustainable development goals, renewable energy, bioenergy transitions, circular bioeconomy, clean cooking, life-cycle assessment, energy policy
National Category
Bioenergy
Identifiers
urn:nbn:se:umu:diva-170012 (URN)10.3390/en13030719 (DOI)000522489000212 ()
Available from: 2020-05-05 Created: 2020-05-05 Last updated: 2020-05-05Bibliographically approved
Korhonen, K., Kristensen, T. B., Falk, J., Lindgren, R., Andersen, C., Carvalho, R. L., . . . Virtanen, A. (2020). Ice-nucleating ability of particulate emissions from solid-biomass-fired cookstoves: an experimental study. Atmospheric Chemistry And Physics, 20(8), 4951-4968
Open this publication in new window or tab >>Ice-nucleating ability of particulate emissions from solid-biomass-fired cookstoves: an experimental study
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2020 (English)In: Atmospheric Chemistry And Physics, ISSN 1680-7316, E-ISSN 1680-7324, Vol. 20, no 8, p. 4951-4968Article in journal (Refereed) Published
Abstract [en]

This research was part of the Salutary Umea Study of Aerosols in Biomass Cookstove Emissions (SUSTAINE) laboratory experiment campaign. We studied ice-nucleating abilities of particulate emissions from solid-fuel-burning cookstoves, using a portable ice nuclei counter, Spectrometer Ice Nuclei (SPIN). These emissions were generated from two traditional cookstove types commonly used for household cooking in sub-Saharan Africa and two advanced gasifier stoves under research to promote sustainable development alternatives. The solid fuels studied included biomass from two different African tree species, Swedish softwood and agricultural residue products relevant to the region. Measurements were performed with a modified version of the standard water boiling test on polydisperse samples from flue gas during burning and size-selected accumulation mode soot particles from a 15 m(3) aerosol-storage chamber. The studied soot particle sizes in nanometers were 250, 260, 300, 350, 400, 450 and 500. From this chamber, the particles were introduced to water-supersaturated freezing conditions (-32 to -43 degrees) in the SPIN. Accumulation mode soot particles generally produced an ice-activated fraction of 10 3 in temperatures 1-1.5 degrees C higher than that required for homogeneous freezing at fixed RHw = 115 %. In five special experiments, the combustion performance of one cookstove was intentionally modified. Two of these exhibited a significant increase in the ice-nucleating ability of the particles, resulting in a 10(3) ice activation at temperatures up to 5.9 degrees C higher than homogeneous freezing and the observed increased ice-nucleating ability. We investigated six different physico-chemical properties of the emission particles but found no clear correlation between them and increasing ice-nucleating ability. We conclude that the freshly emitted combustion aerosols form ice via immersion and condensation freezing at temperatures only moderately above homogeneous freezing conditions.

Place, publisher, year, edition, pages
Nicolaus Copernicus University Press, 2020
National Category
Meteorology and Atmospheric Sciences
Identifiers
urn:nbn:se:umu:diva-170825 (URN)10.5194/acp-20-4951-2020 (DOI)000529394700004 ()
Funder
Swedish Research Council Formas, 942-2015-1385Swedish Research Council Formas, 2015-992Swedish Research Council Formas, 2013-01023Swedish Research Council, 2017-05016Swedish Research Council, 2018-04200Swedish Research Council, 2013-05021The Kempe Foundations, JCK-1516
Available from: 2020-05-25 Created: 2020-05-25 Last updated: 2020-05-25Bibliographically approved
Pourazar, J., Sehlstedt, M., Rankin, G., Uski, O., Boman, C., Lopez, N., . . . Muala, A. (2019). Exposure to wood smoke induced activation of lymphocyte subtypes in peripheral blood. Paper presented at European-Respiratory-Society (ERS) International Congress, Madrid, SPAIN, SEP 28-OCT 02, 2019.. European Respiratory Journal, 54
Open this publication in new window or tab >>Exposure to wood smoke induced activation of lymphocyte subtypes in peripheral blood
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2019 (English)In: European Respiratory Journal, ISSN 0903-1936, E-ISSN 1399-3003, Vol. 54Article in journal, Meeting abstract (Other academic) Published
Place, publisher, year, edition, pages
Sheffield: European Respiratory Society Journals, 2019
Keywords
Air pollution, Systemic effect, Inflammation
National Category
Respiratory Medicine and Allergy
Identifiers
urn:nbn:se:umu:diva-168164 (URN)10.1183/13993003.congress-2019.PA1983 (DOI)000507372402143 ()
Conference
European-Respiratory-Society (ERS) International Congress, Madrid, SPAIN, SEP 28-OCT 02, 2019.
Note

Supplement: 63. Meeting Abstract: PA1983.

Available from: 2020-03-17 Created: 2020-03-17 Last updated: 2020-03-17Bibliographically approved
Carvalho, R. L., Lindgren, R., Lopez, N., Nyambane, A., Nyberg, G., Diaz-Chavez, R. & Boman, C. (2019). Household air pollution mitigation with integrated biomass/cookstove strategies in Western Kenya. Energy Policy, 131, 168-186
Open this publication in new window or tab >>Household air pollution mitigation with integrated biomass/cookstove strategies in Western Kenya
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2019 (English)In: Energy Policy, ISSN 0301-4215, E-ISSN 1873-6777, Vol. 131, p. 168-186Article in journal (Refereed) Published
Abstract [en]

Traditional cooking is today's largest global environmental health risk. Over 640 million people in Africa are expected to rely on biomass for cooking by 2040. In Kenya, cooking inefficiently with wood and charcoal persists as a cause of deforestation and household air pollution. This research analyses the effects of four biomass cookstove strategies on reducing air pollutant emissions in Kisumu County between 2015 and 2035 using the Long-Range Energy Alternatives Planning system. The Business as Usual scenario (BAU) was developed considering the historical trends in household energy use. Energy transition scenarios to Improved Cookstoves (ICS), Pellet Gasifier Stoves (PGS) and Biogas Stoves (BGS) were applied to examine the impact of these systems on energy savings and air pollution mitigation. An integrated scenario (INT) was evaluated as a mix of the ICS, PGS and BGS. The highest energy savings, in relation to the BAU, are achieved in the BGS (30.9%), followed by the INT (23.5%), PGS (19.4%) and ICS (9.2%). The BGS offers the highest reduction in the GHG (37.6%), CH4 (94.3%), NMVOCs (85.0%), CO (97.4%), PM2.5 (64.7%) and BC (48.4%) emissions, and the PGS the highest reduction in the N2O (83.0%) and NOx (90.7%) emissions, in relation to the BAU.

Place, publisher, year, edition, pages
Elsevier, 2019
Keywords
Biomass pellets, Biogas, Cookstoves, Energy forecasting, Global warming, Local air pollutants
National Category
Energy Systems Environmental Sciences
Identifiers
urn:nbn:se:umu:diva-161498 (URN)10.1016/j.enpol.2019.04.026 (DOI)000472125200015 ()
Projects
Bio4Energy
Funder
Swedish Research Council Formas, 942-2015-1385The Kempe Foundations, JCK-1516
Available from: 2019-07-12 Created: 2019-07-12 Last updated: 2019-09-02Bibliographically approved
Muala, A., Österdahl, R., Sehlstedt, M., Rankin, G., Pourazar, J., Bosson, J. A., . . . Öhberg, F. (2019). Small airways effects of exposure to wood smoke. Paper presented at European-Respiratory-Society (ERS) International Congress, Madrid, SPAIN, SEP 28-OCT 02, 2019.. European Respiratory Journal, 54
Open this publication in new window or tab >>Small airways effects of exposure to wood smoke
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2019 (English)In: European Respiratory Journal, ISSN 0903-1936, E-ISSN 1399-3003, Vol. 54Article in journal, Meeting abstract (Other academic) Published
Place, publisher, year, edition, pages
Sheffield: European Respiratory Society Journals, 2019
Keywords
Asthma, Air pollution
National Category
Respiratory Medicine and Allergy
Identifiers
urn:nbn:se:umu:diva-168166 (URN)10.1183/13993003.congress-2019.PA2829 (DOI)000507372403325 ()
Conference
European-Respiratory-Society (ERS) International Congress, Madrid, SPAIN, SEP 28-OCT 02, 2019.
Available from: 2020-03-17 Created: 2020-03-17 Last updated: 2020-03-17Bibliographically approved
Hansson, A., Rankin, G., Uski, O., Sehlstedt, M., Bosson, J. A., Pourazar, J., . . . Muala, A. (2019). Wood smoke effects on epithelial cell lines and human airway cells. Paper presented at European-Respiratory-Society (ERS) International Congress, Madrid, SPAIN, SEP 28-OCT 02, 2019.. European Respiratory Journal, 54
Open this publication in new window or tab >>Wood smoke effects on epithelial cell lines and human airway cells
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2019 (English)In: European Respiratory Journal, ISSN 0903-1936, E-ISSN 1399-3003, Vol. 54Article in journal, Meeting abstract (Other academic) Published
Place, publisher, year, edition, pages
European Respiratory Society Journals, 2019
Keywords
Bronchoscopy, Immunology, Air pollution
National Category
Respiratory Medicine and Allergy
Identifiers
urn:nbn:se:umu:diva-168169 (URN)10.1183/13993003.congress-2019.PA5448 (DOI)000507372407158 ()
Conference
European-Respiratory-Society (ERS) International Congress, Madrid, SPAIN, SEP 28-OCT 02, 2019.
Note

Supplement: 63. Meeting Abstract: PA5448.

Available from: 2020-03-17 Created: 2020-03-17 Last updated: 2020-03-17Bibliographically approved
Sehlstedt, M., Muala, A., Pourazar, J., Rankin, G., Uski, O., Behndig, A. F., . . . Blomberg, A. (2019). Wood smoke exposure induces the activation of bronchoalveolar lavage lymphocytes. Paper presented at European-Respiratory-Society (ERS) International Congress, Madrid, SPAIN, SEP 28-OCT 02, 2019.. European Respiratory Journal, 54
Open this publication in new window or tab >>Wood smoke exposure induces the activation of bronchoalveolar lavage lymphocytes
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2019 (English)In: European Respiratory Journal, ISSN 0903-1936, E-ISSN 1399-3003, Vol. 54Article in journal, Meeting abstract (Other academic) Published
Place, publisher, year, edition, pages
European Respiratory Society Journals, 2019
Keywords
Air pollution, Bronchoalveolar lavage, Inflammation
National Category
Respiratory Medicine and Allergy
Identifiers
urn:nbn:se:umu:diva-168165 (URN)10.1183/13993003.congress-2019.PA2828 (DOI)000507372403324 ()
Conference
European-Respiratory-Society (ERS) International Congress, Madrid, SPAIN, SEP 28-OCT 02, 2019.
Note

Supplement: 63. Meeting Abstract: PA2828.

Available from: 2020-03-17 Created: 2020-03-17 Last updated: 2020-03-17Bibliographically approved
Hedayati, A., Lindgren, R., Boman, C., Skoglund, N. & Öhman, M. (2018). Ash transformation during single-pellet combustion of agricultural biomass fuels – focus on K and P. In: : . Paper presented at 27th international conference of Impacts of Fuel Quality on Power Production and the Environment, Lake Louise, Canada, September 23-28, 2018.
Open this publication in new window or tab >>Ash transformation during single-pellet combustion of agricultural biomass fuels – focus on K and P
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2018 (English)Conference paper, Oral presentation only (Other academic)
National Category
Energy Engineering Other Chemistry Topics
Identifiers
urn:nbn:se:umu:diva-157284 (URN)
Conference
27th international conference of Impacts of Fuel Quality on Power Production and the Environment, Lake Louise, Canada, September 23-28, 2018
Funder
Swedish Energy Agency, 41877-1
Available from: 2019-03-13 Created: 2019-03-13 Last updated: 2020-05-05Bibliographically approved
Nyström, R., Lindgren, R., Avagyan, R., Westerholm, R., Lundstedt, S. & Boman, C. (2017). Influence of Wood Species and Burning Conditions on Particle Emission Characteristics in a Residential Wood Stove. Energy & Fuels, 31(5), 5514-5524
Open this publication in new window or tab >>Influence of Wood Species and Burning Conditions on Particle Emission Characteristics in a Residential Wood Stove
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2017 (English)In: Energy & Fuels, ISSN 0887-0624, E-ISSN 1520-5029, Vol. 31, no 5, p. 5514-5524Article in journal (Refereed) Published
Abstract [en]

Emissions from small-scale residential biomass combustion are a major source of indoor and outdoor particulate matter (PM) air pollution, and the performance of stoves, boilers, and fireplaces have been shown to be influenced both by fuel properties, technology, and user behavior (firing procedures). Still, rather scarce information is available regarding the relative importance of these variables for the particle characteristics and emissions of different particulate components, e.g., soot, polycyclic aromatic hydrocarbons (PAHs), oxy-PAH, and metals. In particular, the behavior of different wood fuels under varying firing procedures and combustion conditions has not been studied thoroughly. Therefore, the objective of this work was to elucidate the influence of wood species and combustion conditions on particle emission characteristics in a typical Nordic residential wood stove. The emissions from four different wood species were investigated at two controlled combustion conditions, including nominal and high burn rates, with a focus on physical and chemical properties of the fine particulate matter. Considerably elevated carbonaceous particle emissions (soot and organics) were found during high burn rate conditions, which were associated with a shift in particle number size distribution toward a higher fraction of larger particles. In some cases, as here seen for pine, the specific fuel properties can affect the combustion performance and thereby also influence particle and PAH emissions. For the inorganic ash particles, the content in the fuel, and not burning conditions, was found to be the main determining factor, as seen by the increased emissions of alkali salts for aspen. Wood stove emission data on 11 specific oxy-PAHs, together with 45 PAHs, were combined with controlled variations of burning conditions and fuels. The oxy-PAH/PAH ratio during a high burn rate was observed to increase, suggesting an enrichment of particulate oxy-PAH. Accordingly, the main influence on emission performance and particle characteristics was seen between different burn rates, and this study clearly illustrates the major importance of proper operation to avoid unfavorable burning condition, regardless of the wood species used.

National Category
Bioenergy
Identifiers
urn:nbn:se:umu:diva-136337 (URN)10.1021/acs.energyfuels.6b02751 (DOI)000402023600098 ()
Projects
Bio4Energy
Funder
Swedish Research Council, 621-2012-3802
Available from: 2017-06-19 Created: 2017-06-19 Last updated: 2019-09-02Bibliographically approved
Nielsen, I. E., Eriksson, A. C., Lindgren, R., Martinsson, J., Nyström, R., Nordin, E. Z., . . . Pagels, J. (2017). Time-resolved analysis of particle emissions from residential biomass combustion: Emissions of refractory black carbon, PAHs and organic tracers. Atmospheric Environment, 165, 179-190
Open this publication in new window or tab >>Time-resolved analysis of particle emissions from residential biomass combustion: Emissions of refractory black carbon, PAHs and organic tracers
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2017 (English)In: Atmospheric Environment, ISSN 1352-2310, E-ISSN 1873-2844, Vol. 165, p. 179-190Article in journal (Refereed) Published
Abstract [en]

Time-resolved particle emissions from a conventional wood stove were investigated with aerosol mass spectrometry to provide links between combustion conditions, emission factors, mixing state of refractory black carbon and implications for organic tracer methods. The addition of a new batch of fuel results in low temperature pyrolysis as the fuel heats up, resulting in strong, short-lived, variable emission peaks of organic aerosol-containing markers of anhydrous sugars, such as levoglucosan (fragment at m/z 60). Flaming combustion results in emissions dominated by refractory black carbon co-emitted with minor fractions of organic aerosol and markers of anhydrous sugars. Full cycle emissions are an external mixture of larger organic aerosol-dominated and smaller thinly coated refractory black carbon particles. A very high burn rate results in increased full cycle mass emission factors of 66, 2.7, 2.8 and 1.3 for particulate polycyclic aromatic hydrocarbons, refractory black carbon, total organic aerosol and m/z 60, respectively, compared to nominal burn rate. Polycyclic aromatic hydrocarbons are primarily associated with refractory black carbon-containing particles. We hypothesize that at very high burn rates, the central parts of the combustion zone become air starved, leading to a locally reduced combustion temperature that reduces the conversion rates from polycyclic aromatic hydrocarbons to refractory black carbon. This facilitates a strong increase of polycyclic aromatic hydrocarbons emissions. At nominal burn rates, full cycle emissions based on m/z 60 correlate well with organic aerosol, refractory black carbon and particulate matter. However, at higher burn rates, m/z 60 does not correlate with increased emissions of polycyclic aromatic hydrocarbons, refractory black carbon and organic aerosol in the flaming phase. The new knowledge can be used to advance source apportionment studies, reduce emissions of genotoxic compounds and model the climate impacts of refractory black carbon, such as absorption enhancement by lensing. 

Place, publisher, year, edition, pages
PERGAMON-ELSEVIER SCIENCE LTD, 2017
Keywords
Black carbon, PAHs, Residential biomass combustion, SP-AMS, Levoglucosan
National Category
Meteorology and Atmospheric Sciences Bioenergy
Identifiers
urn:nbn:se:umu:diva-139614 (URN)10.1016/j.atmosenv.2017.06.033 (DOI)000407665500016 ()
Projects
Bio4Energy
Available from: 2017-10-04 Created: 2017-10-04 Last updated: 2019-09-02Bibliographically approved
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