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Analytical pyrolysis of re-circulated leachates: towards an improved municipal waste treatment
Autor: Franke, M.; Jandl, G.; Leinweber, P.
In:
Journal of Analytical and Applied Pyrolysis
Bandangabe: 79
ISBN: 0165-2370
Seite: 16 - 23
Jahr: 2007
Einordung:
Institut: Professur Bodenkunde
Abstract:
The harmless removal of municipal solid waste (MSW) requires the biodegradation of organic matter to decrease the risk of gaseous emissions and leaching of contaminants. We studied the re-circulation of leachates from an aerobic-treated MSW in a lysimeter and compared these results with a similar laboratory study using small-scale reactors. The reduction of total organic C and biological and chemical oxygen demands provided clear evidence for the biodegradation of organic matter in MSW after twelve months of leachate re-circulation. Curie-point pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) and pyrolysis-field ionization mass spectrometry (Py-FIMS) revealed that the biodegradation was more efficient in the large-scale lysimeter than in the laboratory reactors. Different from the laboratory experiments, carbohydrates and N-containing compounds were decomposed almost completely after two months. Furthermore, temperature-resolved Py-FIMS showed that leachate re-circulation led to a higher thermal stability of the residual, non-decomposed organic matter. In summary, the two analytical pyrolysis methods proved that the re-circulation of leachates through MSW promoted organic matter biodegradation and offers an improved aerobic waste treatment technology. Ansprechpartner
Zur Publikation: Mitarbeiter,
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Letzte Änderung des Eintrages:
10.03.2011
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