REMOVAL OF Cd2+, Cu2+AND Pb2+ WITH A BURKINA FASO CLAY ELIMINATION DU Cd2+, DU Cu2+ ET DU Pb2+ PAR UNE ARGILE LOCALE DU BURKINA FASO
BRAHIMA SORGHO ,
ABDOULKADRI AYOUBA MAHAMANE,
BOUBIE GUEL,
LAMINE ZERBO,
MOUSSA GOMINA,
PHILIPPE BLANCHART
Affiliations
BRAHIMA SORGHO
Université Ouaga I Pr. KI-ZERBO, Equipe Physico-Chimie et de Technologie des Matériaux, 03 BP 7021 Ouagadougou 03, Burkina Faso
ABDOULKADRI AYOUBA MAHAMANE
Université Ouaga I Pr. KI-ZERBO, Equipe Chimie Physique et Electrochimie, 03 BP 7021 Ouagadougou 03, Burkina Faso
BOUBIE GUEL
Université Ouaga I Pr. KI-ZERBO, Equipe Chimie Physique et Electrochimie, 03 BP 7021 Ouagadougou 03, Burkina Faso
LAMINE ZERBO
Université Ouaga I Pr. KI-ZERBO, Equipe Physico-Chimie et de Technologie des Matériaux, 03 BP 7021 Ouagadougou 03, Burkina Faso
MOUSSA GOMINA
Ecole Nationale Supérieure d’Ingénieurs de Caen (ENSICAEN), Laboratoire de Cristallographie et Sciences des Matériaux (CRISMAT), 6, Bd. Maréchal Juin, 14050 Caen, France
PHILIPPE BLANCHART
Ecole Nationale Supérieure de Céramique Industrielle (ENSCI), Laboratoire Science des Procédés Céramiques et Traitements de Surface (SPCTS), 12, Rue Atlantis, 87068 Limoges, France
Contamination of water by heavy metals is often linked to human, industrial and agricultural activities, and cause health and ecological problems. The objective of this study is to remove water pollutants like Cd2+, Cu2+ and Pb2+ in synthetic solutions by adsorption on clay from Burkina Faso. Electrochemical characterizations revealed that 90 % of heavy metals can be removed. Structural studies evidenced that almost all clay mineral species participate to the removal of heavy metals through different physico-chemical mechanisms namely ion exchange, complexation and precipitation.
