Preparing process for organic modified bentonite composite material

Abstract

The present invention discloses preparation process of organic modified bentonite composite material. The organic modified bentonite composite material is prepared with bentonite, and through adding water via stirring, adding polycondensate of dicyandiamine and formaldehyde to produce constant temperature vibration reaction, cooling to normal temperature, suction filtering, washing, drying, crushing and sieving. The organic modified bentonite composite material is used in treating dyeing effluent, and has the advantages of high efficiency, small consumption, fast deposition speed, low treating cost, etc.

Description

technical field

[0001] The invention relates to a preparation method of a novel modified organic bentonite composite material. Background technique

[0002] Bentonite is an aluminosilicate with montmorillonite as the main mineral component, and its structure is a 2:1 crystal structure composed of two layers of silicon-oxygen tetrahedron sandwiching a layer of aluminum-oxygen octahedron. Since part of the Al(III) in the octahedron is replaced by Mg(II), and part of the Si(IV) in the tetrahedron is replaced by Al(III), the bentonite layered structure has a permanent negative charge, containing Ca 2+ , Mg 2+ 、Na + 、K + Such as exchangeable cations, can generate various modified or modified products through the exchange reaction with other cations. The most prominent features of the modified bentonite are large layer spacing, strong lipophilic and hydrophobic properties, and good adsorption to organic matter. Therefore, it can be applied to the treatment of industrial waste...