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《Journal of Anhui Normal University(Natural Science)》 2006-01
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Effect of Chemical Modification on Dye Adsorption Capacity of Peanut Hull

SUN Ying-zhi,ZHANG Xiao-ping,GONG Ren-min,LIU Hui-jun,YANG Chao (College of Life Science,Anhui Normal University,Wuhu 241000,China)  
In this study,the roles of three major functional groups,i.e.amino,carboxyl,and hydroxyl groups in the biomass of peanut hull in biosorption of six dyes,methylene blue(MB),brilliant cresyl blue(BCB),neutral red(NR),amaranth(Am),sunset yellow(SY) and fast green FCF(FG) were investigated. These functional groups in peanut hull were chemically modified individually in order to determine their contribution to the biosorption of ionic dyes.Batch experiments were performed with raw and modified biomass and suggested that hydroxyl group played a significant role in the binding of all six dyes,carboxyl group inhibited the adsorption of anionic dyes but it was major functional group in the adsorption of cationic dyes and the effect of methylation of amino grou was not significant in the adsorption of six dyes.After chemical modification,some relevant changes could also been found in IR spectra and XRD diagrams of modified sorbents.
【Fund】: 安徽省教育厅自然科学基金(2003kj157);; 安徽省“重要生物资源保护与利用重点实验室”基金
【CateGory Index】: X788
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