naa a22 4500 510751237 CHVBK 20180411083105.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s11270-013-1514-4 doi (NATIONALLICENCE)springer-10.1007/s11270-013-1514-4 Treatment of Arsenic-, Chromium-, Copper- and Pentachlorophenol-Polluted Soil Using Flotation [Elektronische Daten] [Nicolas Reynier, Jean-François Blais, Guy Mercier, Simon Besner] Soils polluted by metals and organic compounds are a major challenge in soil remediation and environmental recovery; however, the technology to efficiently decontaminate soils polluted by both metal and organic pollutants does not yet exist. Most of these soils are disposed of in landfills. This study first evaluates chemical reagents (hydrochloric, nitric, sulfuric and lactic acids and ethanol) for leaching metals from soil. Assays were then conducted to evaluate non-ionic, ionic and amphoteric surfactants for pentachlorophenol (PCP) removal by flotation. Finally, a laboratory-scale leaching/flotation process was applied to treat four soil samples polluted with both organic ([PCP]i = 2.5-30mg kg−1) and metals ([As]i = 50-250mg kg−1, [Cr]i = 35-220mg kg−1, [Cu]i = 80-350mg kg−1) compounds. The organic compounds and metals are concentrated in the froth and liquid fractions, respectively. Removal yields of 82-93%, 30-80%, 79-90% and 36-78% were obtained from As, Cr, Cu and PCP, respectively, under optimized process conditions (H2SO4 = 1N, [cocamidopropyl betaine]i = 1% (w w−1), t = 60min, T = 60°C, PD = 10% (w v−1)). The treatment of the produced leachate was also tested by chemical precipitation using different reagents. Springer Science+Business Media Dordrecht, 2013 Soil washing nationallicence Flotation nationallicence Contaminated soil nationallicence Pentachlorophenol nationallicence Arsenic nationallicence Chemical precipitation nationallicence Reynier Nicolas Institut national de la recherche scientifique (Centre Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, G1K 9A9, Quebec, QC, Canada aut Blais Jean-François Institut national de la recherche scientifique (Centre Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, G1K 9A9, Quebec, QC, Canada aut Mercier Guy Institut national de la recherche scientifique (Centre Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, G1K 9A9, Quebec, QC, Canada aut Besner Simon Institut de recherche d'Hydro-Québec (IREQ), 1800, boul. Lionel-Boulet, J3X1S1, Varennes, QC, Canada aut Water, Air, & Soil Pollution Springer Netherlands 224/4(2013-04-01), 1-12 0049-6979 224:4<1 2013 224 11270 https://doi.org/10.1007/s11270-013-1514-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-013-1514-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Reynier Nicolas Institut national de la recherche scientifique (Centre Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, G1K 9A9, Quebec, QC, Canada aut NATIONALLICENCE 700 1- Blais Jean-François Institut national de la recherche scientifique (Centre Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, G1K 9A9, Quebec, QC, Canada aut NATIONALLICENCE 700 1- Mercier Guy Institut national de la recherche scientifique (Centre Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, G1K 9A9, Quebec, QC, Canada aut NATIONALLICENCE 700 1- Besner Simon Institut de recherche d'Hydro-Québec (IREQ), 1800, boul. Lionel-Boulet, J3X1S1, Varennes, QC, Canada aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/4(2013-04-01), 1-12 0049-6979 224:4<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer