Removal of lead(II) from aqueous stream by hydrophilic modified kapok fiber using the Fenton reaction |
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| Authors: | Dongfang Wang Daeik Kim Chul-Ho Shin Yufeng Zhao Joon-Seok Park Moonhee Ryu |
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| Institution: | 1.Division of Biotechnology, College of Environmental and Bioresource Sciences,Chonbuk National University,Iksan,South Korea;2.Seohae Environment Science Institute,Jeonju,South Korea;3.EST & ES, Inc.,Fullerton,USA;4.Division of Semiconductor and Chemical Engineering,Chonbuk National University,Jeonju,South Korea;5.Department of Earth and Environmental Engineering,Kangwon National University,Samcheok,South Korea |
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| Abstract: | A hydrophilic kapok fiber was prepared by a chemical process of the Fenton reaction and used as an adsorbent to remove Pb(II) from aqueous solution. The effects of experimental parameters including pH, contact time, Pb(II) concentration, and coexisting heavy metals were estimated as well as evaluated. The optimum concentrations of FeSO4 and H2O2 for the Fenton reaction-modified kapok fiber (FRKF) were 0.5 mol L?1 and 1 mol L?1, respectively. The adsorption kinetic models and isotherm equations of Langmuir and Freundlich were conducted to identify the most optimum adsorption rate and adsorption capacity of Pb(II) on FRKF. The FRKF displayed an excellent adsorption rate for Pb(II) in single metal solution with the maximum adsorption capacity of 94.41?±?7.56 mg g?1 at pH 6.0. Moreover, the FRKE still maintained its adsorption advantage of Pb(II) in the mixed metal solution. The FRKF exhibited a considerable potential in removal of metal content in wastewater streams. |
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