Water purification from cationic organic dyes using kaolin-based ceramic materials

The development of effective sorbents based on cheap natural raw materials for water purification from synthetic organic dyes is an important environmental problem. It known that layered silicates are distinguished by mechanical strength, thermal and chemical resistance, high dispersion, ion exchange, availability low cost. However, the main disadvantage clays their insufficiently sorption capacity with respect to toxicants. Therefore, increase it, surface clay minerals modified various physical methods. object study kaolin Glukhovets deposit (Ukraine), rock-forming mineral which kaolinite. After its modification followed acid activation chloride acid, sufficiently structural-sorption properties increased dye, methylene blue, obtained. influence conditions synthesis ceramic physicochemical features dye removal aqueous medium studied. dependence values blue silicate temperature treatment concentration was used activation, has been established specific obtained samples significantly affected both perchloric acid. Thus, under certain experimental conditions, were a area 140 m2/g, exceeds original kaolin, 9 m2/g. A significant in acid-activated compared heat-treated forms established. value maximum almost 2 times reaches 16 mg/g.