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- Aurell, JohannaUmeå universitet,Kemiska institutionen (författare)
Effects of transient combustion conditions on the formation of polychlorinated dibenzo-p-dioxins, dibenzofurans, and benzenes, and polycyclic aromatic hydrocarbons during municipal solid waste incineration
- Artikel/kapitelEngelska2009
Förlag, utgivningsår, omfång ...
- Mary Ann Liebert,2009
- printrdacarrier
Nummerbeteckningar
- LIBRIS-ID:oai:DiVA.org:umu-21690
- https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-21690URI
- https://doi.org/10.1089/ees.2008.0032DOI
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- Språk:engelska
- Sammanfattning på:engelska
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Anmärkningar
- This study investigated the effects of transient combustion conditions on formation of polychlorinated dibenzo-p-dioxins (PCDD) and polychlorinated dibenzofurans (PCDF) along the postcombustion zone. Polychlorinated benzenes (PCBz) and polycyclic aromatic hydrocarbons (PAH) were also studied. The study was conducted in a laboratory fluidized-bed reactor fed with an artificial municipal solid waste (MSW) under controllable but realistic combustion conditions. PCDD/Fs, PCBz, and PAHs were monitored under normal, transient, and posttransient combustion conditions and simultaneously sampled at three different sampling points/temperatures (400°C, 300°C, and 200°C). Substantially higher PCDD/F, PCBz, and PAH concentrations were found during transient combustion than during normal combustion. Elevated concentrations were found to decrease with time. PCDD/F concentrations were similar at all points during normal and transient combustion conditions, but were found in higher concentrations at 200°C than 400°C under the posttransient combustion periods. Higher concentrations of the sum PAH and PCBz were also found at 200°C than 400°C in the posttransient combustion periods. Transient combustion conditions induced changes in both PCDD/F homologue profile and PCDD/F congener patterns compared to normal combustion. PCDD/PCDF ratios indicated an increase of the de novo synthesis during transient combustion conditions. Although, the PCDD/F congeners found to be most strongly affected by the transient combustion conditions indicated different reactions pathways active for formation of PCDF and PCDD, de novo synthesis and precursors, respectively. The most strongly affected PCDD/F congeners of transient combustion were identified and are presented.
Ämnesord och genrebeteckningar
- NATURVETENSKAP Kemi hsv//swe
- NATURAL SCIENCES Chemical Sciences hsv//eng
- waste incineration
- PCDD/F
- PCBz
- PAH
- transient combustion
- congener pattern
Biuppslag (personer, institutioner, konferenser, titlar ...)
- Fick, JerkerUmeå universitet,Kemiska institutionen(Swepub:umu)jefi0001 (författare)
- Marklund, Stellan,1949-Umeå universitet,Kemiska institutionen(Swepub:umu)stma0004 (författare)
- Umeå universitetKemiska institutionen (creator_code:org_t)
Sammanhörande titlar
- Ingår i:Environmental Engineering Science: Mary Ann Liebert26:3, s. 509-5201092-87581557-9018
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