A Study on Adsorption of Fe (ii) by Accacia Bark

The present paper deals with adsorption of Fe (ii) on Accacia bark. The variation in pH of the solution has no effect on the basic nature of time growth or adsorption time or saturation period. The adsorption was initially rapid and finally became constant due to slow removal near saturation. The extent of adsorption varies significantly with change in pH of the solution and attained a peak level to 74 per cent at pH 5.5 and thereafter decreased to 56.4 per cent at pH 9.5. It is obvious from results that pH of the medium plays an important role in adsorption of Fe (ii) from metallic solution.