Textural, mineralogical and physico-chemical characterization of red clay of Tanout (Zinder-Niger) with a view to its valorization in water treatment

This study aims to determine the textural (specific surface, pore volume and size) mineralogical characteristics of Tanout red clay Zinder region (Niger) in order have data allowing its use as an adsorbent. The methodology is based on analyzes (adsorption N2 at 77 K by Brunauer-Emmett-Teller method), (X-ray fluorescence, X-ray diffraction, thermo-gravimetric analysis, scanning electron microscopy) physicochemical (preliminary analyses). results obtained show that has a specific surface 418.4 m2.g-1 967.7 calculated according BET Langmuir methods respectively microporous 540 m2.g- 1, with varying from 0.0389 0.2535 cm3.g-1 size 0.3675 5.423 nm (Barrett-Joyner-Halenda, Dubinin-Radushkevich, Dubinin -A, Horvath-Kawazoe Saito-Foley). It slit cylindrical micro- pores. slightly neutral pH aqueous medium high cation exchange capacity low humidity density, mainly composed SiO2 (83.2%), Al2O3 (7.04%) Fe2O3 (3.35%) trace elements, main ones being: Zr (2490 ppm), Sr (310.21 Cu (310.1 V (290.1 ppm) Zn (140ppm). consists essentially Montmorillonite, illite Kaolinite impurities such quartz rutile. degree crystallinity. These make it promoter material can be used