| 摘要 |
FIELD: production of adsorbents, petrochemistry, chemical industry and metallurgy, purification of sewage against various impurities. SUBSTANCE: activated granulated coal is impregnated with saturated aqueous solution of ammonium thiocyanate, potassium thiocyanate or sodium, urea or thiourea and is allowed to stand within 5-6 h. Then heat treatment within 2.5-3 h at 310-370 C is carried out. EFFECT: increased sorption capacity of modified activated coal, simplified the method. |
