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Communication Dans Un Congrès Année : 2013

Transfer heavy metal from soil treated to colza

Résumé

The impact of heavy metals were tested in sludge from urban and industrial wastewater treatment plants, trying to understand their influence on colza growth and their bioaccumulation. We chose the colza to their specific characteristics. The colza is a plant of the family Brassica Napus, is an excellent bio-accumulator of heavy metals. The mean levels found in the soil are organized in the following order: Fe >> Mn> Zn> Pb> Cu> Ni> Co> Cd. The contents of heavy metals in the sludge are very high and exceed European values allowed for that type of use. The effects of the contribution of sludge are manifested by a significant increase in the heavy metals of the colza, these results in a variation of the ratio between the aerial part and roots of the plant; this ratio tends to increase with the dose of mud brought in soil. The roots of plants show high levels of Zn even on the ground of untreated soil. The contents of Ni, Pb and Zn, compared to Cu and Co, are higher in the roots of colza.
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Dates et versions

hal-00948078 , version 1 (20-02-2014)

Identifiants

  • HAL Id : hal-00948078 , version 1

Citer

Najla Lassoued, Essaïd Bilal, Saloua Rejeb, Issam Guénole-Bilal, Mohamed Nejib Rejeb, et al.. Transfer heavy metal from soil treated to colza. 14º Congresso Brasileiro de Geologia de Engenharia e Ambiental, Dec 2013, Rio de Janeiro, Brazil. pp.PAP014281. ⟨hal-00948078⟩
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