Synthesis of Novel Lignin-Based Ion-Exchange Resin and Its Utilization in Heavy Metals Removal

被引:87
作者
Liang, Feng-Bing [1 ]
Song, Yan-Lei [1 ]
Huang, Chong-Pin [1 ]
Li, Ying-Xia [1 ]
Chen, Biao-Hua [1 ]
机构
[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
基金
中国国家自然科学基金;
关键词
AQUEOUS-SOLUTION; WHEAT BRAN; EQUILIBRIUM; BIOSORPTION; ADSORPTION; STANDARDIZATION; CHROMIUM; BINDING; BIOMASS; CD(II);
D O I
10.1021/ie301863e
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
A new lignin-based resin (LBR) was prepared by condensation polymerization of sodium lignosulfonate with glucose under acidic conditions. The physical and chemical properties of LBR were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), and C-13 cross-polarization magic angle spinning nuclear magnetic resonance (C-13 CP MAS NMR). Structure analyses revealed that the resulting spherical particles are composed of amorphous cross-linked phenylpropane-based polymers that have a high density of acidic groups and high thermal stability. The adsorption performance of heavy metals (Cr(III), Cu(II), Ni(II), Pb(II), and Cd(II)) onto LBR were investigated. Langmuir, Freundlich, and Dubinin-Radushkevich (D-R) models were applied to analyze the experimental data. The maximum adsorption capacity of LBR for the five metals was in the following order: Pb(II) >> Cu(II) > Cd(II) > Ni(II) approximate to Cr(III). The experimental data were also tested by pseudo-first-order, pseudo-second-order, and intraparticle diffusion kinetic models. The adsorption process of all metal ions on LBR is well-described by the pseudo-second-order model. Moreover, the regeneration method of LBR was also studied.
引用
收藏
页码:1267 / 1274
页数:8
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