Modeling kinetics of Cd, Pb, and Zn vaporization during municipal solid waste bed incineration / Abhishek Asthana in Industrial & engineering chemistry research, Vol. 49 N° 16 (Août 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 16 (Août 2010) . - pp. 7605–7609 Titre : Modeling kinetics of Cd, Pb, and Zn vaporization during municipal solid waste bed incineration Type de document : texte imprimé Auteurs : Abhishek Asthana, Auteur ; Quentin Falcoz, Auteur ; Philippe Sessiecq, Auteur Année de publication : 2010 Article en page(s) : pp. 7605–7609 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Modeling Kinetics Résumé : The fate of heavy metals contained in municipal solid waste is of major concern in the incineration process. This study is the first attempt to analyze the kinetic behavior of Cd, Pb, and Zn in a waste bed burning on the grate of an incinerator. The vaporization rates of the three heavy metals were derived from laboratory experiments. The kinetic law was then introduced into Garbed-ss, a mathematical model of the on-grate incineration of a refuse bed. Results show that the calculated vaporization of the three metals is fast, proceeds to nearly full completion, occurs at the pyrolysis front, and is indeed controlled by the thermal degradation of the waste. Alhough in agreement with thermodynamic calculations, the vaporization of lead and zinc seems to be overestimated. The model would be improved by accounting for the initial physical and chemical speciation of the heavy metals in the waste feed. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100181x [article] Modeling kinetics of Cd, Pb, and Zn vaporization during municipal solid waste bed incineration [texte imprimé] / Abhishek Asthana, Auteur ; Quentin Falcoz, Auteur ; Philippe Sessiecq, Auteur . - 2010 . - pp. 7605–7609. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 16 (Août 2010) . - pp. 7605–7609 Mots-clés : Modeling Kinetics Résumé : The fate of heavy metals contained in municipal solid waste is of major concern in the incineration process. This study is the first attempt to analyze the kinetic behavior of Cd, Pb, and Zn in a waste bed burning on the grate of an incinerator. The vaporization rates of the three heavy metals were derived from laboratory experiments. The kinetic law was then introduced into Garbed-ss, a mathematical model of the on-grate incineration of a refuse bed. Results show that the calculated vaporization of the three metals is fast, proceeds to nearly full completion, occurs at the pyrolysis front, and is indeed controlled by the thermal degradation of the waste. Alhough in agreement with thermodynamic calculations, the vaporization of lead and zinc seems to be overestimated. The model would be improved by accounting for the initial physical and chemical speciation of the heavy metals in the waste feed. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100181x

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