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Paper Details

Adsorption Equilibrium and Kinetics of 4-Chlorophenol: A Comparative Study

A.S.Ghatbandhe*, H. G.Jahagirdar 1and M.K.N.Yenkie2

Journal Title:Journal of Chemical, Biological and physical sciences

Adsorption equilibrium, kinetics of 4-chlorophenol (4-CP) one of the chlorophenols (CPs) onto bituminous coal based Filtrasorb-400 grade granular activated carbon and polymeric adsorbents were studied in aqueous solution in a batch system. Langmuir isotherm models were applied to experimental equilibrium data of 4-CP adsorption. Equilibrium data fitted very well to the Langmuir equilibrium models of 4-CP. Adsorbent monolayer capacity Qo Langmuir constant b and adsorption rate constants ka were evaluated. Adsorption using GAC is very rapid in the first hour of contact where 60 - 70 % of the adsorbate is removed by GAC followed by a slow approach to equilibrium, whereas in case of polymeric adsorbents 50-60 % of the adsorbate is removed in the first 30 min which is then followed by a slow approach to equilibrium. Comparative adsorption capacity of different adsorbents used is observed to be in following order F 400 > XAD-4 > XAD-1180 > XAD-7HP