ASC whetlerite is the resultant product of the impregnation of ammoniacal solution of Cu(II), Cr(VI) and Ag(I) salts. However, ammonia removal from impregnanted carbon is a difficult task but necessary. Therefore, a new method was investigated to obtain Cu(II), Cr(VI) and Ag(I) salt impregnated carbon. The aqueous solutions of these metal salts were used for impregnation of active carbon of 1250 m~2/g surface area. For this, therefore, basic copper carbonate was replaced by cupric nitrate. Ammonia was substituted with sodium hydroxide and tetraethylene diammine or pyridine. Incipient volume impregnation technique was used to get the suitable impregnated carbon. The newly impregnated carbon was characterized for surface area and impregnants.
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