Critical analysis of PCDD/F emissions from anaerobic digestion.
This paper concerns a particular aspect of anaerobic digestion, that is the emission of PCDD/F in different scenarios where this biological process is present. The considered scenarios are: anaerobic digestion of automatically sorted Municipal Solid Waste, source separated organic fraction of Municipal Solid Waste treated in an anaerobic digester, anaerobic process developed in a Municipal Solid Waste sanitary landfill. Not always the emissions taken into account are related to combustion of biogas from anaerobic digestion: the loss of biogas from a landfill causes an uncontrolled emission of PCDD/F. The paper is completed with an analysis of the role of anaerobic digestion in PCDD/F inventories and health risk considerations. Indeed the most detailed inventories offer emission factors useful for a deep understanding of the phenomenon of PCDD/F release into the atmosphere. Concerning health risk, some suggestions in order to decrease it are proposed.
Rada
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Department of Civil and Environmental Engineering, University of Trento, via Mesiano 77, 38050, Italy. elena.rada@ing.unitn.it
Ragazzi
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D000693:Anaerobiosis; D001572:Benzofurans / Q000032:analysis*; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis; D011108:Polymers / Q000032:analysis*; D012037:Refuse Disposal
D001572:Benzofurans; D000072317:Polychlorinated Dibenzodioxins; D011108:Polymers; C016068:polychlorodibenzofuran