Accueil > LabEx "OSUG@2020" > Actions soutenues > International > Aide à la mobilité des étudiants > Retention of As and Pb by jarosites in polluted soils and mine tailings in Mexico


Terre Univers Environnement

Retention of As and Pb by jarosites in polluted soils and mine tailings in Mexico

par Chargé(e) de mission communication - 23 février 2017

Laboratoire(s)/équipe(s) du LabEx OSUG impliqué(e.s) : ISTerre
Porteur du projet : Alejandro FERNANDEZ-MARTINEZ


We are requesting funds to support an 8 week academic stay by a Ph.D. student from Mexico (UNAM), to be trained by Dr. Alejandro Fernández-Martínez (ISTerre) in the modeling of EXAFS data collected during three cycles at the Advanced Light Source (ALS), Berkeley National Lab. The samples processed include synthetic jarosite, arsenic-substituted jarosites, and asenic-lead-substituted jarosites, as well as lead-sorbed samples of the different jarosites, and jarosite-rich samples from contaminates scenarios. The main goal is to understand the forms of lead and arsenic reactivity on jarosites, which are minerals generated under highly acidic and sulfate-rich environments, such as those found under acid-mine drainage. The general aim is to describe the bonding environment of both elements in jarosites and elucidate their retention mechanisms, under the hypothesis that a positive synergistic retention exists between the two. Dr. Fernández-Martínez has ample experience in modeling of EXAFS data and on environmental mineralogy.

Soutien attribué en 2016 : 2 000 €

Dans la même rubrique :


Crédits et mentions légales | Contact | Plan du site | © OSUG - 2017