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Fate of metals and emissions of organic pollutants from torrefaction of waste wood, MSW, and RDF
Department of Chemistry, Umeå University.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Energivetenskap.ORCID-id: 0000-0002-5777-9241
Department of Chemistry, Umeå University.
VafabMiljö Kommunalförbund, SE-721 87 Västerås.
Vise andre og tillknytning
2017 (engelsk)Inngår i: Waste Management, ISSN 0956-053X, E-ISSN 1879-2456, Vol. 68, s. 646-652Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Torrefaction of municipal solid waste (MSW), refuse-derived fuel (RDF), and demolition and construction wood (DC) was performed at 220 °C and a residence time of 90 min in a bench-scale reactor. The levels of toxic polychlorinated dibenzo-p-dioxins (PCDD) and dibenzofurans (PCDF) contained in emission from the torrefaction process were evaluated. In addition, main ash-forming elements and trace metals in the raw feedstock and char were determined. The use of MSW in fuel blends with DC resulted in lower PCDD and PCDF emissions after torrefaction, compared with the RDF blends. The migration of chlorine from the feedstock to the gas phase reduces the chlorine content of the char which may reduce the risk of alkali chloride-corrosion in char combustion. However, trace metals catalytically active in the formation of PCDD and PCDF remain in the char, thereby may promote PCDD and PCDF formation during subsequent char combustion for energy recovery; this formation is less extensive than when the feedstock is used.

sted, utgiver, år, opplag, sider
Elsevier, 2017. Vol. 68, s. 646-652
HSV kategori
Forskningsprogram
Energiteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-64276DOI: 10.1016/j.wasman.2017.06.017ISI: 000413126300065PubMedID: 28633911Scopus ID: 2-s2.0-85020515019OAI: oai:DiVA.org:ltu-64276DiVA, id: diva2:1112680
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Validerad;2017;Nivå 2;2017-09-25 (andbra)

Tilgjengelig fra: 2017-06-20 Laget: 2017-06-20 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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