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Emissions of toxic pollutants from co-combustion of demolition and construction wood and household waste fuel blends
Umeå University, Faculty of Science and Technology, Department of Chemistry.
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2018 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 203, p. 506-513Article in journal (Refereed) 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. 

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 203, p. 506-513
Keywords [en]
POPs, PCDD, RDF, FOOD WASTE, PELLET STOVE
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:umu:diva-148712DOI: 10.1016/j.chemosphere.2018.03.203ISI: 000432235000059PubMedID: 29649692Scopus ID: 2-s2.0-85047426084OAI: oai:DiVA.org:umu-148712DiVA, id: diva2:1221114
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Bio4EnergyAvailable from: 2018-06-19 Created: 2018-06-19 Last updated: 2019-09-02Bibliographically approved

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Edo, MarJansson, Stina

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