Awat ghasemi - Chemistry Faculty Department of Applied Chemistry, Semnan University
Mustapha Fazli - Chemistry Faculty Department of Applied Chemistry, Semnan University

TMOSxerogel,recentlyha been considered asasolidsurface which is active. Srufaceoftheadsorbentdue to the out wardoxygenatomisinthe molecular structure, is negatively charged,so thissolid, shows good ability to adsorb metalions. But because of thenegative chargeon the surface of the adsorbent, the anions, particularly organic anion compoundsarenotabsorbed. Tofix this problem, it can set themetalionson thesurface of the solid. By placing the cadmium ions on the xerogel, a politive charge on the surface of the adsorbenitis made, that increased the ability of the adsorbent to attract 2,4- dichorophenol from aqueous solutions. Resultsshow an increasing of the adsorption about 17% onemptyxerogel, to about 60%by modifiedone, with metal cadmium (II) ion.

2,4-dichloropheno., modified xerogel, cadmium (II), TMOS