SORBENT PREPARATION METHOD Russian patent published in 2001 - IPC

FIELD: sorbents. SUBSTANCE: invention relates to preparing sorption materials with wide application area based on vegetable-origin polymers and consists in combining impregnation and shell treatment operations to form carbon sorption surface. Treatment is carried out first with concentrated hydrochloric acid and then with 33% alkali solution and followed by grinding and drying at 100 C. In particular, sorbent preparation method from vegetable polymer waste such as walnut shell is elaborated. EFFECT: imparted native biologically-active properties and high specific sorption capacity. 2 cl, 1 dwg, 1 tbl, 9 ex