%0 Journal Article %T Removal of chromium VI from wastewater by combined electrocoagulation sorption processes %+ Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques (CRAPC) %+ Laboratoire de Génie de la Réaction (U.S.T.H.B) %+ Institut des Sciences Chimiques de Rennes (ISCR) %A Ait Ouaissa, Yasmine %A Chabani, Malika %A Amrane, Abdeltif %A Bensmaili, Aicha %< avec comité de lecture %@ 0930-7516 %J Chemical Engineering and Technology %I Wiley-VCH Verlag %V 36 %N 1 %P 147-155 %8 2012-12-12 %D 2012 %R 10.1002/ceat.201200375 %K Adsorption %K Cr(VI) %K Electrocoagulation %Z Engineering Sciences [physics]/Chemical and Process Engineering %Z Chemical Sciences/Chemical engineering %Z Chemical Sciences/Analytical chemistry %Z Environmental Sciences/Environmental EngineeringJournal articles %X The elimination of hexavalent chromium from synthetic effluents in a batch stirred electrocoagulation cell with aluminum electrodes coupled with a sorption process using red onion skin adsorbent is addressed. The effect of process variables such as medium pH and adsorbent concentration was investigated in an attempt to optimize the removal capacity. Adsorption and electrocoagulation were first considered separately, with maximum Cr(VI) removal yields of 47 % and 78 %, respectively, at pH 2. When combining the two processes, a removal of 97 % of the total Cr(VI) in a pH range of 3-6 was achieved. The almost total elimination observed for the considered pollutant demonstrated the feasibility and the synergistic effect of the coupled process. %G English %L hal-00910975 %U https://univ-rennes.hal.science/hal-00910975 %~ SDE %~ UNIV-RENNES1 %~ CNRS %~ INSA-RENNES %~ ENSC-RENNES %~ ISCR %~ SCR_CTI %~ GIP-BE %~ SCR-CIP %~ STATS-UR1 %~ UR1-SPM %~ INC-CNRS %~ UR1-UFR-SPM %~ UR1-HAL %~ UR1-SDLM %~ TEST-UNIV-RENNES %~ TEST-UR-CSS %~ UNIV-RENNES %~ INSA-GROUPE %~ UR1-MMS %~ TEST2-HALCNRS