Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6355229 | Waste Management | 2013 | 6 Pages |
Abstract
The mechanically sorted dry fraction (MSDF) and Fines (<20Â mm) arising from the mechanical biological treatment of residual municipal solid waste (RMSW) contains respectively about 11% w/w each of recyclable and recoverable materials. Processing a large sample of MSDF in an existing full-scale mechanical sorting facility equipped with near infrared and 2-3 dimensional selectors led to the extraction of about 6% w/w of recyclables with respect to the RMSW weight. Maximum selection efficiency was achieved for metals, about 98% w/w, whereas it was lower for Waste Electrical and Electronic Equipment (WEEE), about 2% w/w. After a simulated lab scale soil washing treatment it was possible to extract about 2% w/w of inert exploitable substances recoverable as construction materials, with respect to the amount of RMSW. The passing curve showed that inert materials were mainly sand with a particle size ranging from 0.063 to 2Â mm. Leaching tests showed quite low heavy metal concentrations with the exception of the particles retained by the 0.5Â mm sieve. A minimum pollutant concentration was in the leachate from the 10 and 20Â mm particle size fractions.
Keywords
MSOFWEEESRFWFDNIRMBTC&DEDTAEthylenediaminetetraacetic acidWaste electrical and electronic equipmentchemical oxygen demandTotal solidsvolatile solidsFinesMechanical biological treatmentWaste framework directiveResidual municipal solid wasteConstruction and demolitionSolid recovered fuelSoil washingRecoverableRecyclableNear infraredMoisture contentUrban miningPETPolyethylenePolyethylene terephthalatePolypropylenepolycarbonatesPolystyreneCod
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geotechnical Engineering and Engineering Geology
Authors
Francesco Di Maria, Caterina Micale, Alessio Sordi, Giuseppe Cirulli, Moreno Marionni,