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DatoValore
TitleFACTORS AFFECTING HEAVY METALS ENRICHMENT IN FLY ASH FROM SLUDGE INCINERATION BY A ROTATING DRUM FURNACE
AbstractIncineration tests were performed using sewage sludge as is or spiked with chlorinated organic compounds. Cd, Cr, Cu, Mn, Ni, Pb, and Zn behaviour was studied by assessing their partitioning among bottom, cyclone, and filter ash. Only Cd, Pb, and Zn undergo significant enrichment in the filter ash. Cd and Pb enrichment is enhanced by high chlorine concentrations in the feed-stream. With exception of zinc, the experimental results may be satisfactorily predicted by a thermodynamic model of the combustion chamber. The unpredicted volatilisation of Zn at low chlorine input is attributed to incomplete mixing conditions in the furnace (pyrolysis pockets).
SourceJOUNAL OF RESIDUALS SCIENCE & TECHNOLOGY 1 (1), pp. 63–69
Keywordssewage sludgeincinerationfly ashheavy metal
JournalJOUNAL OF RESIDUALS SCIENCE & TECHNOLOGY
EditorDEStech Publications, Inc., Lancaster PA, Stati Uniti d'America
Year2004
TypeArticolo in rivista
AuthorsBRAGUGLIA C.M., MARANI D., MININNI G.
Text67785 2004 sewage sludge incineration fly ash heavy metal FACTORS AFFECTING HEAVY METALS ENRICHMENT IN FLY ASH FROM SLUDGE INCINERATION BY A ROTATING DRUM FURNACE BRAGUGLIA C.M., MARANI D., MININNI G. IRSA Incineration tests were performed using sewage sludge as is or spiked with chlorinated organic compounds. Cd, Cr, Cu, Mn, Ni, Pb, and Zn behaviour was studied by assessing their partitioning among bottom, cyclone, and filter ash. Only Cd, Pb, and Zn undergo significant enrichment in the filter ash. Cd and Pb enrichment is enhanced by high chlorine concentrations in the feed stream. With exception of zinc, the experimental results may be satisfactorily predicted by a thermodynamic model of the combustion chamber. The unpredicted volatilisation of Zn at low chlorine input is attributed to incomplete mixing conditions in the furnace pyrolysis pockets . 1 factors affecting HM Factors_affecting_heavy_metals_enrichment.doc Articolo pubblicato 20130529152301508.pdf Articolo in rivista DEStech Publications, Inc. 1544 8053 JOUNAL OF RESIDUALS SCIENCE TECHNOLOGY JOUNAL OF RESIDUALS SCIENCE TECHNOLOGY camillamaria.braguglia BRAGUGLIA CAMILLA MARIA dario.marani MARANI DARIO giuseppe.mininni MININNI GIUSEPPE