Leaching behaviour of low level organic pollutants contained in cement-based materials: Experimental methodology and modelling approach

Emissions of organic pollutants from traffic and roads: Priority pollutants selection and substance flow analysis

“…The most common additives include liquid and mineral adhesives, such as amines and amides; polymers like elastomers and plastomers; synthetic wax; and fibres (Huntsman, 2007;Morgan et al, 2013;NVF, 2006), but also recycled tyre granules, which are a source of phthalates and PAHs (Burstyn et al, 2000;Chauhan et al, 2012;Klint, 2001;Källqvist, 2005). Concrete pavement materials contain various additives and admixtures (Table 1) used to improve their performance in areas such as water reduction, faster hardening, greater strength and durability, and general resistance to abrasion, consequently reducing leachability to the runoff (Ramachandran, 1996;Rixom and Mailvaganam, 1986;Tiruta-Barna et al, 2006;Togerö, 2006). The types of admixtures used in concrete include water reducers and accelerators, as well as airentraining, water-proofing and de-foaming agents (Rixom and Mailvaganam, 1986).…”

Chemical and ecotoxicological characterization of solid residues produced during the co-pyrolysis of plastics and pine biomass

“…Therefore, it is necessary to develop specific analytical procedures that are adequate for the determination of volatile organic compounds and non-volatile organic compounds in those materials and in their leachates. Several research works have described the release of organic compounds from different materials and residues: cement-based and stabilized materials [9], contaminated soils [10][11][12], paint residues of furniture factories [13], shredder residues [14,15], municipal solid waste incinerators fly ashes [15,16], varnish residue and urea resin waste [17], sewage sludge [18] and landfills [19][20][21][22][23][24][25][26][27].…”

Long-term leaching test of organo-contaminated cement-clay pastes

“…Among the technologies used to convert an hazardous waste into an environmentally acceptable one, the solidification/stabilization (S/S) with cementitious binders is certainly one of the most widely applied, at least when dealing with inorganic substances [1]. The use of S/S technology to dispose organic wastes has been much less investigated [2][3][4][5][6][7][8], due to the negative effect of organic substances on the hydration process of cement pastes. Small amounts of organic components in a waste can be tolerated, but the contaminant leachability from the cemented waste form has to be carefully monitored or modelled [8].…”

“…The use of S/S technology to dispose organic wastes has been much less investigated [2][3][4][5][6][7][8], due to the negative effect of organic substances on the hydration process of cement pastes. Small amounts of organic components in a waste can be tolerated, but the contaminant leachability from the cemented waste form has to be carefully monitored or modelled [8]. In recent years, it has been suggested that the use of organophilic clays as pre-sorbent materials to bind the organic fraction of the waste [9], which otherwise would be almost free to exit the porous cement matrix [10].…”