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《Experimental Technology and Management》 2011-04
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Study on adsorption performance of polyacrylonitrile-based activated carbon fiber for trace of hexavalent chromium

Li Shanping,Wang Jun,Li Chong,Cui Jiangjie,Fang Hongchen (Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse,School of Environmental Science and Engineering,Shandong University,Jinan 250100,China)  
As an adsorbent,the polyacrylonitrile-based activated carbon fiber(PAN-ACF)was modified by air thermal oxidation,nitrate impregnation and hydrogen peroxide impregnation,respectively.The modification of PAN-ACF samples was characterized,including SEM surface morphology,BET specific surface,FTIR surface groups and total surface acidic groups.The adsorption effects on trace of hexavalent chromium and the adsorption capacity of modified PAN-ACF were studied.After modification macerated by hydrogen peroxide,the carbon crystallite size of ACF3 became smaller,causing the structure disordered,ascending the surface greatly,but the growth of surface oxygen pipeline groups was not obvious.The adsorption effect on hexavalent chromium of slightly polluted water was best,and the equilibrium temperature equation could be described with Langmuir isotherms equation,which is fit for Freundlich equation better.
【Fund】: 国家科技支撑计划资助项目(2006BAJ05A12)
【CateGory Index】: X703.1
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