Adsorption of Congo Red onto Lignocellulose/Montmorillonite Nanocomposite

Adsorption of Congo Red onto Lignocellulose/Montmorillonite Nanocomposite

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摘要 Lignocellulose/montmorillonite （LNC/MMT） nanocomposites were prepared and characterized by FTIR and XRD. The adsorption of congo red （CR） on LNC/MMT nanocomposite was studied in detail. The effects of contact temperature, pH value of the dye solutions, contact time and concentration of dye solutions on the adsorption capacities of lignocellulose （LNC）, montmorillonite （MMT） and the nanocomposite were investigated. The adsorption kinetics and isotherms and adsorption thermodynamics of the nanocomposite for CR were also studied. The results show that the adsorption capacity of LNC/MMT nanocomosite is higher than that of LNC and MMT. All the adsorption processes fit very well with the pseudo-second-order and the Langmuir equation. From thermodynamic studies, it is seen that the adsorption is spontaneous and endothermic. Lignocellulose/montmorillonite （LNC/MMT） nanocomposites were prepared and characterized by FTIR and XRD. The adsorption of congo red （CR） on LNC/MMT nanocomposite was studied in detail. The effects of contact temperature, pH value of the dye solutions, contact time and concentration of dye solutions on the adsorption capacities of lignocellulose （LNC）, montmorillonite （MMT） and the nanocomposite were investigated. The adsorption kinetics and isotherms and adsorption thermodynamics of the nanocomposite for CR were also studied. The results show that the adsorption capacity of LNC/MMT nanocomosite is higher than that of LNC and MMT. All the adsorption processes fit very well with the pseudo-second-order and the Langmuir equation. From thermodynamic studies, it is seen that the adsorption is spontaneous and endothermic.

作者赵亚红王丽

机构地区 College of Material Science and Art Design

出处《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2012年第5期931-938,共8页 武汉理工大学学报（材料科学英文版）

基金 Special Fund for National Forestry Industry Scientific Research in the Public Interest of China(No.201104004) the National Natural Science Foundation of China(No.20867004)

关键词 lignocellulose montmorillonite nanocomposite adsorption congo red lignocellulose montmorillonite nanocomposite adsorption congo red

分类号 TB383.1 [一般工业技术—材料科学与工程]

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Journal of Wuhan University of Technology(Materials Science)

2012年第5期

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Adsorption of Congo Red onto Lignocellulose/Montmorillonite Nanocomposite

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