Dechlorination of polychlorinated biphenyls, dibenzo-p-dioxins and dibenzofurans on fly ash
Language English Country England, Great Britain Media print
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
11061310
DOI
10.1016/s0045-6535(00)00144-2
PII: S0045653500001442
Knihovny.cz E-resources
- MeSH
- Benzofurans analysis chemistry MeSH
- Chemical Phenomena MeSH
- Chlorine chemistry isolation & purification MeSH
- Nitrogen MeSH
- Chemistry, Physical MeSH
- Particulate Matter MeSH
- Gas Chromatography-Mass Spectrometry MeSH
- Polychlorinated Biphenyls analysis chemistry MeSH
- Polychlorinated Dibenzodioxins analogs & derivatives analysis chemistry MeSH
- Dibenzofurans, Polychlorinated MeSH
- Coal Ash MeSH
- Industrial Waste MeSH
- Carbon * MeSH
- Hot Temperature MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Benzofurans MeSH
- Chlorine MeSH
- Nitrogen MeSH
- Particulate Matter MeSH
- Polychlorinated Biphenyls MeSH
- Polychlorinated Dibenzodioxins MeSH
- Dibenzofurans, Polychlorinated MeSH
- Coal Ash MeSH
- Industrial Waste MeSH
- Carbon * MeSH
Dechlorination of commercial mixtures of polychlorinated biphenyls (PCB) as well as polychlorinated dibenzo-p-dioxins (PCDD) and dibenzofurans (PCDF) on extracted and non-extracted fly ash obtained from municipal waste incinerator (MWI) was studied in closed systems under nitrogen atmosphere at temperatures of 260 degrees C and 340 degrees C. Decomposition results (given as the difference between PCB or PCDD/F molar amounts before and after the experiment (in %) due predominantly to dechlorination reactions) and detoxification data (expressed similarly but related to toxic PCB and PCDD/F congeners only and given in I-TEQ units) are reported. Detoxification of Delor 105/80T at 260 degrees C and 340 degrees C at a loading of 0.65 wt%, was 99.48% and 100%, respectively. The decomposition of Delor 103 at 340 degrees C and for the loading of 0.75 wt%, corresponded to 99.99%. The detoxification capability of PCDD/Fs on extracted and non-extracted fly ash for loading of 130 and 264 ng/0.4 g of fly ash at 340 degrees C made 96 and 98%, respectively.
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