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Journal articles

The Use of Sorghum in a Phytoattenuation Strategy: A Field Experiment on a TE-Contaminated Site

Abstract : Phytoattenuation combines phytoextraction or phytostabilization with the economic valorization of the biomass produced on the contaminated soil. Sorghum bicolor is a suitable crop for this strategy, as it is known to be metal-tolerant and can be used for biogas or bioethanol production or in strategies toward biofortification. In the current investigation, two cultivars, Biomass 133 and Trudan Headless (HL), were studied in a metal-contaminated (Cd, Pb, Zn) field site located in northern France to assess their potential use in a phytoattenuation strategy. The biomass yield and the metal transfer in the produced biomass were monitored in three plots with different pollution levels. Both cultivars were tolerant to high levels of metal pollution in field conditions, with yields similar to that obtained on uncontaminated sites. Neither of the cultivars changed the metal mobility of the soil and both exhibited a metal-excluder behavior. Nevertheless, Cd concentration in the aboveground part of Trudan HL, and of Biomass 133 to a lesser extent, could restrict their use in some valorization options. However, biogas production was possible with the produced biomass, indicating anaerobic digestion to be a possible valorization route for sorghum grown on contaminated sites.
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Submitted on : Wednesday, June 2, 2021 - 4:22:53 PM
Last modification on : Friday, February 18, 2022 - 3:44:01 PM
Long-term archiving on: : Friday, September 3, 2021 - 7:47:16 PM


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Alexandre Perlein, Valérie Bert, Océane Desannaux, Marcella Fernandes de Souza, Arnaud Papin, et al.. The Use of Sorghum in a Phytoattenuation Strategy: A Field Experiment on a TE-Contaminated Site. Applied Sciences, MDPI, 2021, 11 (8), pp.3471. ⟨10.3390/app11083471⟩. ⟨ineris-03246881⟩



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