Adsorption of CI Basic Blue 9 on chitosan-based materials

被引：20

作者：

Crini, Gregorio ^{[1
]}

Martel, Bernard ^{[2
]}

Torri, Giangiacomo ^{[3
]}

机构：

[1] Univ Franche Comte, CNRS, UMR 6249, INRA,Lab Chronoenvironm, F-25000 Besancon, France

[2] Univ Sci & Technol Lille, CNRS, UMR 8009, Lab Chim Organ & Macromol, F-59655 Villeneuve Dascq, France

[3] Ist Sci Chim & Biochim G Ronzoni, I-20133 Milan, Italy

来源：

INTERNATIONAL JOURNAL OF ENVIRONMENT AND POLLUTION | 2008年 / 34卷 / 1-4期

关键词：

chitosan; CI Basic Blue 9; adsorption; adsorbents; wastewater treatment;

D O I：

10.1504/IJEP.2008.020809

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this study, N-benzyl mono- and disulfonate derivatives of chitosan are used for the removal of dyes from aqueous solution. The effectiveness of these materials in adsorbing basic blue 9 (BB 9) has been studied as a function of agitation time, initial concentration and solution salinity. Experimental results confirmed the strong cation exchanger character of the sulfonated derivatives and showed that disulfonate derivatives of chitosan exhibited higher sorption capacities toward cationic dye than the monosulfonic one. Sorption of BB 9 reached equilibrium within 20-40 min and the maximum adsorption onto disulfonate derivative was 121.9 mg/g at pH = 3. The originality of both derivatives is their inversed pH domain of solubility compared to the parent polymer, so that they could be used as adsorbents in acidic medium without any crosslinking reaction.

引用

页码：451 / 465

页数：15

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