Étude théorique et expérimentale du procédé d'électrocoagulation : application au traitement des effluents liquides hautement chargés en impuretés organiques et métalliques

Abstract : Electrocoagulation consists in the electrochemical dissolution of metal, e.g. Al or Fe, which generates trivalents cations, which are suitable to modify the zeta potential of suspended matters in the liquid to be treated. The present work deals the investigation of a discontinuous labo process for the treatment of various suspensions e.g. machining oils, diluted latex, colloid suspensions, through aluminium dissolution. Liquid flows continuously in a loop provided with an electrochemical cell provided with flat aluminium electrodes. Various aspects of the process were investigated. First, the electrochemical reactions (aluminium dissolution, hydrogen evolution) were characterised by current-voltage curves, impedance spectroscopy, as weIl as current yields. Moreover, treatment of the various liquid wastes has been extensively studied par monitoring the levels of the chemical oxygen demand (COD) and of total organic carbon (TOC), with time variations of aluminium dissolved and hydrogen formed, depending on the concentrations and the current applied. Finally, two original models were developed for interpretation of the results.
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Theses
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http://docnum.univ-lorraine.fr/prive/INPL_T_2005_KHEMIS_M.pdf
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https://hal.univ-lorraine.fr/tel-01749988
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Submitted on : Thursday, March 29, 2018 - 12:35:11 PM
Last modification on : Thursday, January 31, 2019 - 1:27:50 AM

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Mohamed Khemis. Étude théorique et expérimentale du procédé d'électrocoagulation : application au traitement des effluents liquides hautement chargés en impuretés organiques et métalliques. Alimentation et Nutrition. Institut National Polytechnique de Lorraine, 2005. Français. ⟨NNT : 2005INPL004N⟩. ⟨tel-01749988⟩

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