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  • Title: Removal of organic contaminants from soils by an electrokinetic process: the case of atrazine. Experimental and modeling.
    Author: Ribeiro AB, Rodríguez-Maroto JM, Mateus EP, Gomes H.
    Journal: Chemosphere; 2005 Jun; 59(9):1229-39. PubMed ID: 15857634.
    Abstract:
    The atrazine behaviour in soils when submitted to an electric field was studied and the applicability of the electrokinetic process in atrazine soil remediation was evaluated. Two polluted soils were used, respectively with and without atrazine residues, being the last one spiked. Four electrokinetic experiments were carried out at a laboratory scale. Determination of atrazine residues were performed by enzyme-linked immunosorbent assay (ELISA). The results show that the electrokinetic process is able to remove efficiently atrazine in soil solution, mainly towards the anode compartment: Estimations show that 30-50% of its initial amount is removed from the soil within the first 24h. A one-dimensional model is developed for simulating the electrokinetic treatment of a saturated soil containing atrazine. The movement of atrazine is modelized taking into account the diffusion transport resulting from atrazine concentration gradients and the reversed electro-osmotic flow at acidic soil pH.
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