Adsorption of pb (ii) from aqueous solution onto lewatit fo36 nano resin: equilibrium and kinetic studies

Mehdi Ahmadi1,2,3, Pari Teymouri2,3, Azra Setodeh4, Mohamad Sedigh Mortazavi4, Alireza Asgari5

1 Environmental Technology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
2 Department of Environmental Health Engineering, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
3 Department of Environmental Health Engineering, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
4 Department of Environmental Engineering, Islamic Azad University, Bandar Abbas Branch, Bandar Abbas, Iran
5 Department of Environmental Health Engineering, Tehran University of Medical Sciences, Tehran, Iran

Abstract


This investigation focused on the adsorption of Pb (II) onto Lewatit FO 36 resin from aqueous solutions. The effects of initial metal concentration, contact time, pH of solution were factors that affected the adsorption of Pb (II). Adsorption kinetic was better explained by the pseudo second order type 1 kinetic model that was confirmed by the values (R2>0.986). The Langmuir, Freundlich, Temkin and BET adsorption models were used for the equilibrium studies and Freundlich isotherm better described the adsorption equilibrium. According to the Langmuir isotherm the maximum adsorption capacity of Pb (II) onto Lewatit FO 36 was 62.5 mmolg-1at pH 7 and 0.04 gL-1 resin dosage and 15min contact time.

Keywords


adsorption; isotherm; kinetics; lead (II); lewatit FO 36

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