title: Leaching behaviour of hazardous demolition waste.
abstract: Demolition wastes are generally disposed of in unlined landfills for inert waste. However, demolition wastes are not just inert wastes. Indeed, a small fraction of demolition waste contains components that are hazardous to human health and the environment, e.g., lead-based paint, mercury-contained in fluorescent lamps, treated wood, and asbestos. The objective of this study is to evaluate the release potential of pollutants contained in these hazardous components when they are mixed with inert wastes in unlined landfills. After identification of the different building products which can contain hazardous elements and which can be potentially pollutant in landfill scenario, we performed leaching tests using three different lysimeters: one lysimeter containing only inert wastes and two lysimeters containing inert wastes mixed with hazardous demolition wastes. The leachates from these lysimeters were analysed (heavy metals, chlorides, sulphates fluoride, DOC (Dissolved Organic Carbon), phenol index, and PAH). Finally, we compared concentrations and cumulative releases of elements in leachates with the limits values of European regulation for the acceptance of inert wastes at landfill. Results indicate that limit values are exceeded for some elements. We also performed a percolation column test with only demolition hazardous wastes to evaluate the specific contribution of these wastes in the observed releases.
authors.affiliation: LGCIE, INSA-Lyon, 20 Avenue Albert Einstein, 69621 Villeurbanne Cedex, France. nicolas.roussat@insa-lyon.fr
authors.forename: Nicolas
authors.initials: N
authors.lastname: Roussat
authors.forename: Jacques
authors.initials: J
authors.lastname: Méhu
authors.forename: Mohamed
authors.initials: M
authors.lastname: Abdelghafour
authors.forename: Pascal
authors.initials: P
authors.lastname: Brula
mesh_terms: D004782:Environmental Health; D004867:Equipment Design; D006256:Hazardous Waste / Q000009:adverse effects*; D006801:Humans; D007220:Industrial Waste / Q000032:analysis; D007854:Lead / Q000009:adverse effects; D019216:Metals, Heavy / Q000032:analysis; D010150:Paint / Q000009:adverse effects; D012037:Refuse Disposal / Q000379:methods*; D012989:Soil Pollutants / Q000032:analysis; D018505:Waste Management / Q000295:instrumentation / Q000379:methods; D014874:Water Pollutants, Chemical / Q000009:adverse effects*
chemical_list: D006256:Hazardous Waste; D007220:Industrial Waste; D019216:Metals, Heavy; D012989:Soil Pollutants; D014874:Water Pollutants, Chemical; D007854:Lead