International Science Community Association Research Journal of Chemical Sciences 2231-606X 14 2 2024 06 18 Development of geopolymers based on local clay for the depollution of industrial wastewater 1 11 EN DAZOGBO Pascal Gbétondji 1 Laboratory of Physical Chemistry, Materials and Molecular Modeling / Unit of Inorganic Chemistry, Materials Engineering and Environment (LCP3M / UCIIME), Faculty of Science and Technology (FAST), University of Abomey-Calavi (UAC), 01BP 526 Cotonou, Benign and Laboratory of Water and Environmental Sciences and Techniques (LSTEE), National Water Institute (INE), University of Abomey-Calavi (UAC), 01BP 526 Cotonou, Benin NONVIHO Guevara 2 Laboratory for Study and Research in Applied Chemistry (LERCA), Ecotoxicology and Quality Study Research Unit (UREEQ), Polytechnic School of Abomey-Calavi (EPAC/UAC), Cotonou, Benin OSSENI Sèmiyou Ayélé 3 Applied Hydrology Laboratory (LHA), National Water Institute (INE), University of Abomey-Calavi (UAC), 01BP526 Cotonou, Benin YESSOUFOU Arouna 4 Kaba Chemistry and Applications Research Laboratory, Faculty of Sciences and Technologies of Natitingou, UNSTIM, Benin ZANOU Philémon Mindétonhou 5 Laboratory of Physical Chemistry, Materials and Molecular Modeling / Unit of Inorganic Chemistry, Materials Engineering and Environment (LCP3M / UCIIME), Faculty of Science and Technology (FAST), University of Abomey-Calavi (UAC), 01BP 526 Cotonou, Benign and Laboratory of Water and Environmental Sciences and Techniques (LSTEE), National Water Institute (INE), University of Abomey-Calavi (UAC), 01BP 526 Cotonou, Benin GOUNDJO Ferdinand Sèdjro Didier 6 Laboratory of Physical Chemistry, Materials and Molecular Modeling / Unit of Inorganic Chemistry, Materials Engineering and Environment (LCP3M / UCIIME), Faculty of Science and Technology (FAST), University of Abomey-Calavi (UAC), 01BP 526 Cotonou, Benign CHOUTI Waris Kéwouyèmi 7 Laboratory of Physical Chemistry, Materials and Molecular Modeling / Unit of Inorganic Chemistry, Materials Engineering and Environment (LCP3M / UCIIME), Faculty of Science and Technology (FAST), University of Abomey-Calavi (UAC), 01BP 526 Cotonou, Benign > Research Paper 2023 12 5 2024 06 18 During this study, geopolymers were developed from natural clays, collected in the village of Etigbo in southern Benin. The objective of this research is to evaluate the adsorption potential of modified clay with respect to methylene blue. Several kaolinite-based geopolymers were prepared with different ratios of SiO2 /Al2O 3 and an alkaline activator. X-ray diffraction (XRD) analysis of the samples showed amorphous structure favorable for the adsorption of dyes. Adsorption tests were carried out using the geopolymer named Eti24 and different parameters (contact duration, pH effect of pH, initial concentration of the dye, etc.) have been studied to optimize the MB process of removal. Studies of the adsorption kinetics of this dye on the geopolymer were also carried out. The adsorption equilibrium showed that the absorption kinetic is of pseudo-second order and more compatible with Freundlich model. The results revealed that the Eti24 geopolymer can serve as a basis for more sophisticated methods of treating aqueous effluents. Copyright@ International Science Community Association