Batch technique was carried out for discovering adsorption of brilliant green, toluidine blue and trypan blue dyes onto [email protected] Different amount of dyes were withdrawn from dyes solution then add 25 ml water at the same pH. 25 ml of these dyes were added to specific amount of [email protected] shacking it 1 h. The concentration of residual dye solution was measured spectrophotometrically at maximum wavelength for Br.G, To.B and Tr.B dyes. By knowing C? (initial concentration, mg/L) and Ce (concentration of dye remains, mg/L), V is the volume of Br.G, To.B and Tr.B dyes and m is gram added from S[email protected] The percentage removal (%E) of dyes and capacity of [email protected] was calculated by equations:
%E=(C?-C_e)/C?×100 (1)