title: On the ASR and ASR thermal residues characterization of full scale treatment plant.
abstract: In order to obtain 85% recycling, several procedures on Automotive Shredder Residue (ASR) could be implemented, such as advanced metal and polymer recovery, mechanical recycling, pyrolysis, the direct use of ASR in the cement industry, and/or the direct use of ASR as a secondary raw material. However, many of these recovery options appear to be limited, due to the possible low acceptability of ASR based products on the market. The recovery of bottom ash and slag after an ASR thermal treatment is an option that is not usually considered in most countries (e.g. Italy) due to the excessive amount of contaminants, especially metals. The purpose of this paper is to provide information on the characteristics of ASR and its full-scale incineration residues. Experiments have been carried out, in two different experimental campaigns, in a full-scale tyre incineration plant specifically modified to treat ASR waste. Detailed analysis of ASR samples and combustion residues were carried out and compared with literature data. On the basis of the analytical results, the slag and bottom ash from the combustion process have been classified as non-hazardous wastes, according to the EU waste acceptance criteria (WAC), and therefore after further tests could be used in future in the construction industry. It has also been concluded that ASR bottom ash (EWC - European Waste Catalogue - code 19 01 12) could be landfilled in SNRHW (stabilized non-reactive hazardous waste) cells or used as raw material for road construction, with or without further treatment for the removal of heavy metals. In the case of fly ash from boiler or Air Pollution Control (APC) residues, it has been found that the Cd, Pb and Zn concentrations exceeded regulatory leaching test limits therefore their removal, or a stabilization process, would be essential prior to landfilling the use of these residues as construction material.
authors.affiliation: Department of Industrial Engineering (DII), University of Catania, Viale A. Doria 6, I-95125 Catania, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Mancini
authors.affiliation: Department of Civil, Construction and Environmental Engineering (DICEA), Sapienza University of Rome, Via Eudossiana 18, I-00184 Rome, Italy. Electronic address: paolo.viotti@uniroma1.it.
authors.forename: P
authors.initials: P
authors.lastname: Viotti
authors.affiliation: ENEA Italian National Agency for New Technologies, Energy and Sustainable Economic Development, RC Casaccia, Via Anguillarese 301, 00123 S. Maria Galeria, Rome, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Luciano
authors.affiliation: Department of Applied Science and Technology (DISAT), Polytechnic of Turin, C.so Duca degli Abruzzi 24, 10129 Turin, Italy.
authors.forename: D
authors.initials: D
authors.lastname: Fino
mesh_terms: D001336:Automobiles; D060729:Coal Ash / Q000032:analysis* / Q000145:classification; D017745:Incineration / Q000379:methods*; D019216:Metals, Heavy / Q000032:analysis; D010316:Particle Size; D059027:Recycling / Q000379:methods* / Q000592:standards*; D014866:Waste Products
chemical_list: D060729:Coal Ash; D019216:Metals, Heavy; D014866:Waste Products
keywords: ASR; Final disposal; Full scale plant; Gasification