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Jansson, Stina
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Publikasjoner (10 av 51) Visa alla publikasjoner
Buss, W., Jansson, S., Wurzer, C. & Masek, O. (2019). Synergies between BECCS and Biochar-Maximizing Carbon Sequestration Potential by Recycling Wood Ash. ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 7(4), 4204-4209
Åpne denne publikasjonen i ny fane eller vindu >>Synergies between BECCS and Biochar-Maximizing Carbon Sequestration Potential by Recycling Wood Ash
2019 (engelsk)Inngår i: ACS SUSTAINABLE CHEMISTRY & ENGINEERING, ISSN 2168-0485, Vol. 7, nr 4, s. 4204-4209Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Bioenergy carbon capture and storage (BECCS) and biochar are key carbon-negative technologies. In this study, synergies between these technologies were explored by using ash from wood combustion, a byproduct from BECCS, as an additive (0, 5, 10, 20, and 50 wt %) in biochar production (wood pyrolysis at 450 degrees C). The addition of wood ash catalyzed biochar formation and increased the yield of fixed carbon (FC) (per dry, ash-free feedstock), i.e., the sequestrable carbon per spruce wood input. At the highest ash addition (50%), 45% less wood was needed to yield the same amount of FC. Since the land area available for growing biomass is becoming scarcer, our approach significantly increases biochar's potential to sequester carbon. However, increasing the feedstock ash content results in less feedstock carbon available for conversion into FC. Consequently, the yield of FC per pyrolysis run (based on dry feedstock) in the 50% ash-amended material was lower than in the control. An economic analysis showed that the 20% ash-amended biochar brings the biggest cost savings over the control with a 15% decrease in CO2-abatement costs. Biochar-ash composites increase the carbon sequestration potential of biochar significantly, reduce the CO2-abatement costs, and recycle nutrients which can result in increased plant growth in turn and more biomass for BECCS, bringing synergies for BECCS and biochar deployment.

sted, utgiver, år, opplag, sider
American Chemical Society (ACS), 2019
Emneord
CO2 abatement, Carbon stability, Fixed carbon, Thermogravimetric analysis, Combustion, Negative ission technology
HSV kategori
Identifikatorer
urn:nbn:se:umu:diva-157588 (URN)10.1021/acssuschemeng.8b05871 (DOI)000459367400062 ()
Prosjekter
Bio4Energy
Tilgjengelig fra: 2019-03-27 Laget: 2019-03-27 Sist oppdatert: 2019-09-02bibliografisk kontrollert
Buss, W., Jansson, S. & Mašek, O. (2019). Unexplored potential of novel biochar-ash composites for use as organo-mineral fertilizers. Journal of Cleaner Production, 208, 960-967
Åpne denne publikasjonen i ny fane eller vindu >>Unexplored potential of novel biochar-ash composites for use as organo-mineral fertilizers
2019 (engelsk)Inngår i: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 208, s. 960-967Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Application of wood ash on forest and agricultural soils can provide nutrients and increase soil pH, however, it changes the soil chemistry rapidly and temporarily, often resulting in reduced plant growth and potassium leaching. Biochar from woody materials are nutrient poor and need nutrient enhancement prior to soil application. In this study, spruce residues were mixed with spruce/pine ash in different ratios (0–50%) to produce biochar-ash composites at 450 °C. The biochar yield (ash-free basis) increased by 80–90% with the addition of 50% ash due to catalytic biochar formation. Consequently, nearly half the amount of wood is needed to produce the same amount of (ash-free) biochar. Mineral release was moderated in the composites compared to pure ash, demonstrated by a lower electric conductivity and % available K content (a factor of 2.5–4.4 lower than in wood ash). Furthermore, the % available chromium content, which is a key potentially toxic element in wood ash, decreased by a factor of 50–160. Soil application of biochar-ash composites decreases the risk of Cr toxicity, salinity stress and leaching of K in soil substantially compared to ash application. Biochar-ash composites are a novel product with vast unexplored potential for use in forestry and agriculture.

sted, utgiver, år, opplag, sider
Elsevier, 2019
Emneord
Pyrolysis, Potentially toxic element, Potassium, Heavy metal, Forestry, Agriculture
HSV kategori
Identifikatorer
urn:nbn:se:umu:diva-154488 (URN)10.1016/j.jclepro.2018.10.189 (DOI)000451362200088 ()
Prosjekter
Bio4Energy
Tilgjengelig fra: 2018-12-20 Laget: 2018-12-20 Sist oppdatert: 2019-09-02bibliografisk kontrollert
Kozyatnyk, I., Latham, K. G. & Jansson, S. (2019). Valorization of Humic Acids by Hydrothermal Conversion into Carbonaceous Materials: Physical and Functional Properties. ACS Sustainable Chemistry & Engineering, 7(2), 2585-2592
Åpne denne publikasjonen i ny fane eller vindu >>Valorization of Humic Acids by Hydrothermal Conversion into Carbonaceous Materials: Physical and Functional Properties
2019 (engelsk)Inngår i: ACS Sustainable Chemistry & Engineering, ISSN 2168-0485, Vol. 7, nr 2, s. 2585-2592Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Humic acids (HAs) represent an economic and environmental challenge in water treatment, as they have the propensity to foul membranes and create toxic byproducts when interacting with chlorine. To overcome this, HAs were submitted to hydrothermal carbonization to convert them into an easy to remove, valuable carbon material. The result was a carbonaceous material which was easy to filter/dewater compared to HAs with a char yield of 49 +/- 1.8 wt %, and with 46.6 1.4 wt % ending up in the water phase, 2.2 +/- 0.2 wt % in the tar, and the rest in the gaseous fraction. The molecular weight distribution of the organic matter in the water pre-and post-HTC indicated that the structure was broken into several different fragments with a lower molecular weight than that initially present. Physicochemical analysis of the material via elemental analysis, X-ray photoelectron spectroscopy, diffuse reflectance infrared Fourier transform spectroscopy, and solid-state nuclear magnetic resonance indicated that under hydrothermal carbonization, the aromatic structure of HAs condensed. Carboxylic acids groups were also lost from the surface of HAs, with ether and alcohols increasing because of their loss. The morphology of the obtained material had an amorphous macrostructure consisting of many smaller light lamellar carbon fragments. Finally, the hydrothermal treatment increased the surface area from 0.4 to 103.0 m(2) g(-1).The porosity is located in the mesoporous range of 10-80 nm with a maximum peak at 50 nm.

sted, utgiver, år, opplag, sider
Washington: American Chemical Society (ACS), 2019
Emneord
Humic, Hydrothermal carbonization, Natural organic matter, Hydrochar, Surface analysis
HSV kategori
Identifikatorer
urn:nbn:se:umu:diva-156319 (URN)10.1021/acssuschemeng.8b05614 (DOI)000456631800083 ()
Prosjekter
Bio4Energy
Tilgjengelig fra: 2019-02-20 Laget: 2019-02-20 Sist oppdatert: 2019-09-02bibliografisk kontrollert
Khaled, A., Richard, C., Redin, L., Niinipuu, M., Janson, S., Jaber, F. & Sleiman, M. (2018). Characterization and Photodegradation of Polybrominated Diphenyl Ethers in Car Seat Fabrics from End-of-Life Vehicles. Environmental Science and Technology, 52(3), 1216-1224
Åpne denne publikasjonen i ny fane eller vindu >>Characterization and Photodegradation of Polybrominated Diphenyl Ethers in Car Seat Fabrics from End-of-Life Vehicles
Vise andre…
2018 (engelsk)Inngår i: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 52, nr 3, s. 1216-1224Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In this study, we examined the photodegradation of decabromodiphenyl ether (BDE-209) on the surface of car seat covers from end-of-life vehicles (ELVs). Samples were collected at two car dismantling facilities in Sweden and cover car models from 1989 to 1998. The content of polybrominated diphenyl ethers (PBDEs) in nine real samples (fabric and polyurethane foam) was first characterized. Fabric samples that did not contain BDE-209 were then spiked with BDE-209 and irradiated in the laboratory and under sunlight. Photoproducts were identified using high performance liquid chromatography coupled to electrospray ionization mass spectrometer (HPLC-ESI-Orbitrap-MS), whereas volatile products were analyzed by gas chromatography mass spectrometry (GC-MS). Similar photodegradation rates and oxidation products were observed in fabric samples irradiated in the laboratory and those collected from ELVs. Estimated half-life of BDE-209 on fabric inside vehicles ranged from 3 to 6 years. Thirteen major photoproducts were identified as lower brominated products, hydroxylated BDEs, brominated and hydroxylated dibenzofurans (PBDFs) and dioxins (PBDDs). Furthermore, several photoproducts were found to be transferable into water, particularly bromophenols and hydroxylated BDEs, and others into gas phase, such as bromomethanol and 1,2-dibromoethane. This should be taken into consideration for better estimating exposure to PBDEs and to develop strategies for ELV recycling.

HSV kategori
Identifikatorer
urn:nbn:se:umu:diva-145595 (URN)10.1021/acs.est.7b04668 (DOI)000424851700033 ()29261294 (PubMedID)
Tilgjengelig fra: 2018-03-29 Laget: 2018-03-29 Sist oppdatert: 2018-06-09bibliografisk kontrollert
Edo, M., Ortuño, N., Persson, P.-E., Conesa, J. A. & Jansson, S. (2018). Emissions of toxic pollutants from co-combustion of demolition and construction wood and household waste fuel blends. Chemosphere, 203, 506-513
Åpne denne publikasjonen i ny fane eller vindu >>Emissions of toxic pollutants from co-combustion of demolition and construction wood and household waste fuel blends
Vise andre…
2018 (engelsk)Inngår i: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 203, s. 506-513Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Four different types of fuel blends containing demolition and construction wood and household waste were combusted in a small-scale experimental set-up to study the effect of fuel composition on the emissions of polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), biphenyls (PCBs), chlorobenzenes (PCBzs), chlorophenols (PCPhs) and polycyclic aromatic hydrocarbons (PAHs). Two woody materials, commercial stemwood (ST) and demolition and construction wood (DC) were selected because of the differences in their persistent organic pollutants (POPs), ash and metals content. For household waste, we used a municipal solid waste (MSW) and a refuse-derived fuel (RDF) from MSW with 5-20 wt% and up to 5 wt% food waste content respectively. No clear effect on the formation of pollutants was observed with different food waste content in the fuel blends tested. Combustion of ST-based fuels was very inefficient which led to high PAH emissions (32 +/- 3.8 mg/kg(fuel)). The use of DC clearly increased the total PCDD and PCDF emissions (71 +/- 26 mu g/kg(fuel)) and had a clear effect on the formation of toxic congeners (210 +/- 87 ng WHO2005-TEQ/kg(fuel)). The high PCDD and PCDF emissions from DC-based fuels can be attributed to the presence of material contaminants such as small pieces of metals or plastics as well as timber treated with chromated copper arsenate preservatives and pentachlorophenol in the DC source. 

sted, utgiver, år, opplag, sider
Elsevier, 2018
Emneord
POPs, PCDD, RDF, FOOD WASTE, PELLET STOVE
HSV kategori
Identifikatorer
urn:nbn:se:umu:diva-148712 (URN)10.1016/j.chemosphere.2018.03.203 (DOI)000432235000059 ()29649692 (PubMedID)2-s2.0-85047426084 (Scopus ID)
Prosjekter
Bio4Energy
Tilgjengelig fra: 2018-06-19 Laget: 2018-06-19 Sist oppdatert: 2019-09-02bibliografisk kontrollert
Weidemann, E., Buss, W., Edo, M., Masek, O. & Jansson, S. (2018). Influence of pyrolysis temperature and production unit on formation of selected PAHs, oxy-PAHs, N-PACs, PCDDs, and PCDFs in biochar-a screening study. Environmental science and pollution research international, 25(4), 3933-3940
Åpne denne publikasjonen i ny fane eller vindu >>Influence of pyrolysis temperature and production unit on formation of selected PAHs, oxy-PAHs, N-PACs, PCDDs, and PCDFs in biochar-a screening study
Vise andre…
2018 (engelsk)Inngår i: Environmental science and pollution research international, ISSN 0944-1344, E-ISSN 1614-7499, Vol. 25, nr 4, s. 3933-3940Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The influence of reactor type and operating conditions of the pyrolysis unit on the final concentration of toxic contaminants in biochar remains unclear. Therefore, we determined the concentrations of polycyclic aromatic hydrocarbons (PAHs), oxygenated polycyclic aromatic hydrocarbons (oxy-PAHs), nitrogen-containing polycyclic aromatic compounds (N-PACs), polychlorinated dibenzo-p-dioxins (PCDDs), and dibenzofurans (PCDFs) in biochars produced from three different feedstocks (softwood, wheat straw, and anaerobic digestate). Different scaled pyrolysis units (one batch and two continuous units) at two different temperatures (550 and 700 degrees C) were considered. The results revealed that the type of biomass had a significant influence on the PAH, oxy-PAH, and N-PAC content of the biochars. The configuration and type of the pyrolysis unit influenced only the wheat straw pyrolyzed at 550 degrees C. PCDDs and PCDFs occurred at very low levels in the biochars. In terms of PAH, PCDD, and PCDF content, the biochars assessed in this study represent a low risk to the environment, regardless of the temperature and type and size of the pyrolysis unit.

Emneord
Polychlorinated dibenzo-p-dioxin, Polychlorinated dibenzofuran, Polycyclic aromatic hydrocarbons, ygenated polycyclic aromatic hydrocarbons, Nitrogen-containing polycyclic aromatic compounds
HSV kategori
Identifikatorer
urn:nbn:se:umu:diva-145603 (URN)10.1007/s11356-017-0612-z (DOI)000425008900087 ()29119490 (PubMedID)
Prosjekter
Bio4Energy
Merknad

Correction: Weidemann, E., Buss, W., Edo, M. et al. Environ Sci Pollut Res (2018) 25: 3941. https://doi.org/10.1007/s11356-017-0804-6

Tilgjengelig fra: 2018-03-21 Laget: 2018-03-21 Sist oppdatert: 2019-09-02bibliografisk kontrollert
Abafe, O. A., Späth, J., Fick, J., Jansson, S., Buckley, C., Stark, A., . . . Martincigh, B. S. (2018). LC-MS/MS determination of antiretroviral drugs in influents and effluents from wastewater treatment plants in KwaZulu-Natal, South Africa. Chemosphere, 200, 660-670
Åpne denne publikasjonen i ny fane eller vindu >>LC-MS/MS determination of antiretroviral drugs in influents and effluents from wastewater treatment plants in KwaZulu-Natal, South Africa
Vise andre…
2018 (engelsk)Inngår i: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 200, s. 660-670Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

South Africa has the largest occurrence of the human immune deficiency virus (HIV) in the world but has also implemented the largest antiretroviral (ARV) treatment programme. It was therefore of interest to determine the presence and concentrations of commonly used antiretroviral drugs (ARVDs) and, also, to determine the capabilities of wastewater treatment plants (WWTPs) for removing ARVDs. To this end, a surrogate standard based LC-MS/MS method was optimized and applied for the detection of thirteen ARVDs used in the treatment and management of HIV/acquired immune deficiency syndrome (HIV/AIDS) in two major and one modular WWTP in the eThekwini Municipality in KwaZulu-Natal, South Africa. The method was validated and the detection limits fell within the range of 2–20 ng L−1. The analytical recoveries for the ARVDs were mainly greater than 50% with acceptable relative standard deviations. The concentration values ranged from <LOD – 53000 ng L−1 (influent), <LOD – 34000 ng L−1 (effluent) in a decentralized wastewater treatment facility (DEWATS); <LOD – 24000 ng L−1 (influent), <LOD – 33000 ng L−1 (effluent) in Northern WWTP and 61–34000 ng L−1 (influent), <LOD – 20000 ng L−1 (effluent) in Phoenix WWTP. Whilst abacavir, lamivudine and zidovudine were almost completely removed from the effluents, atazanavir, efavirenz, lopinavir and nevirapine persisted in the effluents from all three WWTPs. To estimate the ecotoxicological risks associated with the discharge of ARVDs, a countrywide survey focussing on the occurrence of ARVDs in WWTPs, surface and fresh water bodies, and aquatic organisms, is necessary.

sted, utgiver, år, opplag, sider
Elsevier, 2018
Emneord
HIV-ARVs, ARVDs, LC-MS/MS, Matrix-effect, DEWATS, WWTPs
HSV kategori
Identifikatorer
urn:nbn:se:umu:diva-147284 (URN)10.1016/j.chemosphere.2018.02.105 (DOI)000429891300075 ()29524887 (PubMedID)
Prosjekter
Bio4Energy
Tilgjengelig fra: 2018-05-25 Laget: 2018-05-25 Sist oppdatert: 2019-09-02bibliografisk kontrollert
Egan Sjölander, A., Nordlund, A., Fick, J. & Jansson, S. (2018). The multiple meanings of water: wastewater treatment and reuse seen from a communication perspective. In: : . Paper presented at 7th European Communication Conference (ECC) "Centres and Peripheries: Communication, Research, Translation", Lugano, Switzerland, Oct 31 - Nov 3, 2018.
Åpne denne publikasjonen i ny fane eller vindu >>The multiple meanings of water: wastewater treatment and reuse seen from a communication perspective
2018 (engelsk)Konferansepaper, Oral presentation only (Annet vitenskapelig)
HSV kategori
Forskningsprogram
medie- och kommunikationsvetenskap
Identifikatorer
urn:nbn:se:umu:diva-152473 (URN)881251 (Lokal ID)881251 (Arkivnummer)881251 (OAI)
Konferanse
7th European Communication Conference (ECC) "Centres and Peripheries: Communication, Research, Translation", Lugano, Switzerland, Oct 31 - Nov 3, 2018
Tilgjengelig fra: 2018-10-05 Laget: 2018-10-05 Sist oppdatert: 2019-06-19bibliografisk kontrollert
Weidemann, E., Niinipuu, M., Fick, J. & Jansson, S. (2018). Using carbonized low-cost materials for removal of chemicals of environmental concern from water. Environmental science and pollution research international, 25(16), 15793-15801
Åpne denne publikasjonen i ny fane eller vindu >>Using carbonized low-cost materials for removal of chemicals of environmental concern from water
2018 (engelsk)Inngår i: Environmental science and pollution research international, ISSN 0944-1344, E-ISSN 1614-7499, Vol. 25, nr 16, s. 15793-15801Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Adsorption on low-cost biochars would increase the affordability and availability of water treatment in, for example, developing countries. The aim of this study was to identify the precursor materials and hydrochar surface properties that yield efficient removal of compounds of environmental concern (CEC). We determined the adsorption kinetics of a mixture containing ten CECs (octhilinone, triclosan, trimethoprim, sulfamethoxasole, ciprofloxacin, diclofenac, paracetamol, diphenhydramine, fluconazole, and bisphenol A) to hydrochars prepared from agricultural waste (including tomato- and olive-press wastes, rice husks, and horse manure). The surface characteristics of the hydrochars were evaluated via diffuse reflectance infrared spectroscopy (DRIFTS), X-ray photoelectron spectroscopy (XPS), and N2-adsorption. Kinetic adsorption tests revealed that removal efficiencies varied substantially among different materials. Similarly, surface analysis revealed differences among the studied hydrochars and the degree of changes that the materials undergo during carbonization. According to the DRIFTS data, compared with the least efficient adsorbent materials, the most efficient hydrochars underwent more substantial changes during carbonization.

sted, utgiver, år, opplag, sider
Springer, 2018
Emneord
Hydrochar, Adsorption, Hydrothermal carbonization, Agro-industrial residues, Organic chemicals, Low-cost adsorbents
HSV kategori
Identifikatorer
urn:nbn:se:umu:diva-150787 (URN)10.1007/s11356-018-1781-0 (DOI)000434051300046 ()29582326 (PubMedID)
Prosjekter
Bio4Energy
Tilgjengelig fra: 2018-08-16 Laget: 2018-08-16 Sist oppdatert: 2019-09-02bibliografisk kontrollert
Lundin, L. & Jansson, S. (2017). A desktop study on destruction of persistent organic compounds in combustion systems.
Åpne denne publikasjonen i ny fane eller vindu >>A desktop study on destruction of persistent organic compounds in combustion systems
2017 (engelsk)Rapport (Annet vitenskapelig)
Abstract [en]

On behalf of the Swedish Environmental Protection Agency, Dr. Lisa Lundin and Dr. Stina Jansson at the Department of Chemistry, Umeå University, has conducted this desktop study. The main aim of this desktop study was to provide a compilation of the current state of knowledge of polychlorinated dibenzo-p-dioxins (PCDD), dibenzofurans (PCDF), polybrominated diphenylethers (PBDE), hexabromocyclodecane (HBCD), and perfluoroctanesulphonate (PFOS) with regard to their degradation efficiency in advanced solid waste incinerators (ASWI). The objective was also to assess if more support is needed to determinethe degradation efficiency of these compounds in ASWIs.

Publisher
s. 25
HSV kategori
Identifikatorer
urn:nbn:se:umu:diva-141524 (URN)
Tilgjengelig fra: 2017-11-07 Laget: 2017-11-07 Sist oppdatert: 2018-06-09bibliografisk kontrollert
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