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Étude de l’efficacité et de la pérennité de la phytostabilisation aidée couplée à une valorisation biomasse en bois-énergie

Abstract : The Phytosed 2 project (2011-2014) monitored aided phytostabilization on 1 ha of a metal-contaminated sediment landfill site and gained practical information on its deployment. The experimental design was based on the combined use of a basic mineral amendment and the tufted hair-grass and two willow cultivars. The perennial grass Barcampsia cespitosa was highly relevant as it quickly grew, quite totally covered the sediment, did not show toxicity signs and did not transfer trace elements in its aerial parts. In addition, it participated in the regression of Fallopia japonica, an invasive species present in the site. In our sediment conditions, the amendment did not give the short-term expected effects, i.e. decrease of the metal mobility in the sediment and of the foliar metal concentrations in the plants, although the pH increase was significant. In our study, the use of Tordis and Inger willow clones for biomass production seemed not relevant due to their Zn and Cd accumulator behaviour and low biomass yield. The on-going DEMOPHYTO (2014-2018) project will investigate the questions raised by Phytosed 2.
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https://hal-ineris.archives-ouvertes.fr/ineris-01869626
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Submitted on : Thursday, September 6, 2018 - 3:43:16 PM
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Valérie Bert. Étude de l’efficacité et de la pérennité de la phytostabilisation aidée couplée à une valorisation biomasse en bois-énergie. Rapport Scientifique INERIS, 2016, 2015-2016, pp.44-45. ⟨ineris-01869626⟩

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