Low temperature thermal degradation of PCDD/Fs in soil using nanosized particles of zerovalent iron and CaO
2013 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 91, no 6, 740-744 p.Article in journal (Refereed) Published
This study investigated the degradation of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in contaminated soil using low temperature treatment (200-280°C) both alone and in combination with nanosized zerovalent iron (nZVI) particles or CaO. Control soil samples and soil fortified with nZVI particles or CaO were treated at 200 and 250°C in sealed glass ampoules. Treatment of the ampouled samples at 250°C was more effective than treatment at 200°C and the reduction in PCDD/F concentration was greatest when soil was treated at 250°C with nZVI addition (indeed, treatment at 200°C in the absence of nZVI resulted in increases in total PCDD and PCDD/F concentrations). In larger-scale experiments based on the obtained results, using a rotary furnace, the greatest reduction in total PCDD/F concentration was achieved by treating soil at 280°C, and adding nZVI to the soil resulted in almost no detectable PCDD/F in the gas phase.
Place, publisher, year, edition, pages
Elsevier, 2013. Vol. 91, no 6, 740-744 p.
PCDD/F, Nanosized zerovalent iron, Degradation, Thermal treatment, Contaminated soil
IdentifiersURN: urn:nbn:se:umu:diva-67761DOI: 10.1016/j.chemosphere.2013.02.021ISI: 000318056300003PubMedID: 23498061OAI: oai:DiVA.org:umu-67761DiVA: diva2:613869