Title of article :
Removal of 2,4-Dichloro Phenoxy Acetic Acid by Silica Particles Obtained from the Siliceous Sand of Houeyogbe(Republic of Benin)
Author/Authors :
Glitho ، Houefaannick Leslie Laboratory of Physical Chemistry, Materials and Molecular Modeling / Unit of Inorganic Chemistry - Faculty of Science and Technology (FAST) - University of Abomey-Calavi (UAC) , Sagbo ، Etienne V. Laboratory of Physical Chemistry, Materials and Molecular Modeling / Unit of Inorganic Chemistry - Faculty of Science and Technology (FAST) - University of Abomey-Calavi (UAC) , Osseni ، Sèmiyou A. Laboratory of Physical Chemistry, Materials and Molecular Modeling / Unit of Inorganic Chemistry - Faculty of Science and Technology (FAST) - University of Abomey-Calavi (UAC) , Bonou ، Sidoine S. Laboratory of Physical Chemistry, Materials and Molecular Modeling / Unit of Inorganic Chemistry - Faculty of Science and Technology (FAST) - University of Abomey-Calavi (UAC) , Cakpo ، Arthur Laboratory of Physical Chemistry, Materials and Molecular Modeling / Unit of Inorganic Chemistry - Faculty of Science and Technology (FAST) - University of Abomey-Calavi (UAC) , Agani ، Ignace Kaba Chemistry and Applications Research Laboratory - Faculty of Sciences and Technologies of Natitingou - UNSTIM , Laibi ، Armel Laboratory of Physical Chemistry, Materials and Molecular Modeling / Unit of Inorganic Chemistry - Faculty of Science and Technology (FAST) - University of Abomey-Calavi (UAC) , Chouti ، Wariskéwouyèmi Laboratory of Physical Chemistry, Materials and Molecular Modeling / Unit of Inorganic Chemistry - Faculty of Science and Technology (FAST) - University of Abomey-Calavi (UAC)
Abstract :
In this study, silica sands from the commune of Houéyogbé were used to synthesize silica particles by the sol-gel method, using sodium silicate as the reaction precursor. Analysis by X-ray diffraction, infrared spectroscopy, and scanning electron microscopy revealed the formation of pure amorphous silica with spherical shapes. This material was used as an adsorbent to remove 2,4-dichlorophenoxyacetic acid, one of the pesticides most widely used by farmers in Benin. The use of pesticides is a major environmental problem due to their toxicity. Pesticides pollute soils, surface, and groundwater, and it is, therefore, important to find a way of mitigating or even eliminating their effects on the environment. Adsorption tests for this pollutant were carried out in batch mode. The adsorption study showed a maximum of over 90%. The kinetic study indicates that adsorption is effective from the first five (5) minutes and becomes established after one hour. The L-type adsorption isotherm shows that pesticide adsorption takes place by progressive saturation (monolayer).
Keywords :
Benin , silica , Sol , gel , 2 , 4 , D acid , Adsorption
Journal title :
Journal of Water and Environmental Nanotechnology (JWENT)
Journal title :
Journal of Water and Environmental Nanotechnology (JWENT)
