Thermal degradation of PCDD/F, PCB and HCB in municipal solid waste ash.
2007 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 67, no 3, 474-481 p.Article in journal (Refereed) Published
A thermal degradation procedure for reducing the concentrations of mono- to octa-chlorinated PCDD/Fs, PCBs and hexa-chlorobenzenes (HCB) in filter ash from incinerated municipal solid waste (MSW) is described. Thermal treatment of filter ash samples at 500 °C for 60 min in a closed system providing low oxygen conditions resulted in 97% and 99% reductions in the total and I-TEQ concentrations of PCDD/Fs, to 6.8 μg kg−1 ash and <0.05 μg I-TEQ kg−1 ash, respectively. Increasing the thermal treatment time to 480 min, at the same temperature, yielded 99% reductions in both total and I-TEQ concentrations of the mono- to octa-chlorinated PCDD/Fs. Similar effects were observed for HCB and PCBs. The data from this study indicate that PCDD/Fs and other toxic organic compounds in ash from incinerated MSW, can be effectively degraded by this procedure, which combines relatively low-temperatures, short treatment times, and low oxygen conditions.
Place, publisher, year, edition, pages
Oxford: Pergamon Press , 2007. Vol. 67, no 3, 474-481 p.
PCDD/F, PCB, HCB, Thermal degradation, MSW, Fly ash
IdentifiersURN: urn:nbn:se:umu:diva-10112DOI: 10.1016/j.chemosphere.2006.09.057PubMedID: 17109915OAI: oai:DiVA.org:umu-10112DiVA: diva2:149783