Adsorption studies of copper from copper acetate and copper chloride solutions on carbon black ''Spheron 9'' were made at three different pH ranges. Adsorption of copper increased with increase in pH, which was attributed mainly to excessive precipitation and formation of unionized or partially ionized copper species at high pH, which might have adsorbed to a greater extent on the nonpolar graphitic surface of carbon compared to ionic species. Effect of anion of the copper salt was also observed to have an effect on adsorption. Fruendlich's and Langmuir's equations were applied to the adsorption isotherms and it was found that both equations were obeyed.
YOUSAF IQBAL KHATTAK ,M ARSALA KHAN ,
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