Environ. Sci. Technol. 2010, 44, 3779–3785
U(VI) Sorption and Reduction by Fe(II) Sorbed on Montmorillonite S U D I P T A C H A K R A B O R T Y , * ,†,‡ F A B I E N N E F A V R E , †,§ DIPANJAN BANERJEE,| ANDREAS C. SCHEINOST,| MARTINE MULLET,⊥ JEAN-JACQUES EHRHARDT,⊥ J O C E L Y N E B R E N D L E , # L O ¨I C V I D A L , # A N D LAURENT CHARLET† LGIT-OSUG, University of Grenoble-I, Grenoble, France, Institute of Radiochemistry, FZD, Dresden, Germany, LCPME, Universite´ Henri Poincare´ Nancy 1, France, Institut de Science des Mate´riaux de Mulhouse, LRC CNRS 7228, Universite´ de Haute Alsace, Mulhouse, France, Department of Chemistry, Kanchrapara College, Kanchrapara 743145, West Bengal, India, and Ecole d’inge´nieurs et d’architectes de Fribourg, HES-SO, CH-1705, Fribourg
Received November 17, 2009. Revised manuscript received March 27, 2010. Accepted April 8, 2010.
The influence of surface-bound Fe(II) on uranium oxidation state and speciation was studied as a function of time (6 min72 h) and pH (6.1-8.5) in a U(VI)-Fe(II)-montmorillonite (Camontmorillonite, MONT) system under CO2-free, anoxic (O2
