A Comparative Study of Acid-Activated Aluminium and Ferruginous Smectite in Oxalic Acid of Various Concentrations

Acid activation is a chemical modification of minerals and mainly smectites, in order to enhance their surface properties reinforce adsorption capacity for specific ions. Acid-activated clays and, more specifically, inorganic acid-activated calcium montmorillonites are used the bleaching process vegetable oils, which holding third place world food consumption after cereals rice, remove chlorophyll other undesirable substances from oils. This study proposes use oxalic acid modify characteristics create high-quality earths. In particular, aluminium ferruginous smectites treated with concentrations 0.5, 0.7 1 M, structural modifications materials treatment observed through FTIR analysis, combined determination main metals’ extraction smectites. The results showed that smectite susceptible activation. final product has developed vacant spaces its structure absorb ions or molecules, although it retains smectite. Oxalic concentration 0.5 M sufficient achieving this result. produced also compared originating same deposits.