Remediation of copper-contaminated topsoils from a wood treatment facility using in situ stabilisation.
Five organic matters, three phosphate compounds, zerovalent iron grit (ZVIG, 2% by soil weight), two alkaline compounds, and two commercial formulations were incorporated, singly and some combined with ZVIG, into a highly Cu-contaminated topsoil (Soil P7, 2600 mg Cu kg(-1)) from a wood treatment facility. Formulations and two composts were also singly incorporated into a slightly Cu-contaminated topsoil (Soil P10, 118 mg Cu kg(-1)) from the facility surrounding. This aimed to reduce the labile pool of Cu and its accumulation in beans cultivated on potted soils in a climatic chamber. Lowest Cu concentration in soil solution occurred in P7 soils amended with activated carbon (5%) and ZVIG, singly and combined. Basic slag (3.9%) and compost of sewage sludge (5%) combined with ZVIG promoted shoot production and limited foliar Cu accumulation. For amended P10 soils, no changes occurred in soil solution and foliar Cu concentrations, but one compost increased shoot production.
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UMR BIOGECO INRA 1202, Ecology of Communities, University of Bordeaux 1, Bât B8 RdC Est, gate 002, Avenue des Facultés, F-33405 Talence, France.
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D000327:Adsorption; D002244:Carbon; D003300:Copper / Q000032:analysis*; D052918:Environmental Restoration and Remediation / Q000379:methods*; D007887:Fabaceae / Q000737:chemistry / Q000254:growth & development; D005602:France; D006812:Humic Substances; D007220:Industrial Waste; D007501:Iron; D010710:Phosphates; D018520:Plant Shoots / Q000737:chemistry / Q000254:growth & development; D012722:Sewage; D012987:Soil / Q000032:analysis; D012989:Soil Pollutants / Q000032:analysis*; D014934:Wood
D006812:Humic Substances; D007220:Industrial Waste; D010710:Phosphates; D012722:Sewage; D012987:Soil; D012989:Soil Pollutants; D002244:Carbon; D003300:Copper; D007501:Iron