scientific journal of the modern education & research institute • The Kingdom of Belgium
Designations of curves: the bentonite activated: 1– 5% of HNO3; 2 -10% of HNO3; 3– 15% of HNO3; 4– 20% of HNO3. The sorbent with sulfuric acid, further on activity is the clay activated with10% nitric acid bentonite clay. The optimum time of agitation 4 hours at which degree of extraction of phosphorus-containing slimes is reached respectively on the sample of the bentonite processed with 10% of H2SO4 – 60%, on the activated clay processed with 10% of HNO3 – 56% in 4,5 hours, and on the natural clay – 39,5% in 5 hours [5]. Thus, activation of bentonite clay with solutions of sulfuric and hydrochloric acids (10-30%) leads to increase in adsorption size . And, increase in a concentration of acids has a positive impact on the process of removal of ions of Na+ , Ca2+ ,Mg2+ . As a result of activation occurs increase of specific surface with preservation of layered structure of clay minerals that is important for further modifying of the surface are received samples.
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