采用中心组合设计研究季铵化纤维素纳米纤维对阴离子偶氮染料的絮凝作用。
Application of the central composite design to study the flocculation of an anionic azo dye using quaternized cellulose nanofibrils.
机构信息
Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON, Canada N2L 3G1; Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON, Canada N2L 3G1.
Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON, Canada N2L 3G1.
出版信息
Carbohydr Polym. 2015 Nov 20;133:80-9. doi: 10.1016/j.carbpol.2015.06.095. Epub 2015 Jul 10.
Cellulose nanofibrils (CNF) grafted with glycidyltrimethylammonium chloride (GTMAC), containing quaternary ammonium contents of 0.44 (QCNF-1), 1.47 (QCNF-2), and 2.28 (QCNF-3) meqg(-1), were evaluated as flocculants for the removal of Reactive Orange 16, an anionic azo dye, from aqueous solution. A rotatable and orthogonal central composite design was used to examine the performance of QCNFs under a range of experimental conditions. Removal efficiencies at the centre point of the design space were found to be 236.9±7.8, 254.2±3.8, and 264.6±2.8mgg(-1) for QCNF-1, QCNF-2 and QCNF-3, respectively. The highest removal efficiency, 295.1mgg(-1), was observed when using QCNF-3 at a low monovalent salt concentration. The QCNF reported herein provides a sustainable and biodegradable alternative to traditional synthetic flocculants for the decolorization of dye-containing effluents.
用氯代三甲铵（GTMAC）接枝的纤维素纳米纤维（CNF），其季铵含量分别为 0.44（QCNF-1）、1.47（QCNF-2）和 2.28（QCNF-3）meqg(-1)，被评估为从水溶液中去除阴离子偶氮染料活性橙 16 的絮凝剂。采用可旋转和正交中心组合设计来研究 QCNFs 在一系列实验条件下的性能。在设计空间中心点的去除效率分别为 QCNF-1 为 236.9±7.8、QCNF-2 为 254.2±3.8 和 QCNF-3 为 264.6±2.8mgg(-1)。当在低单价盐浓度下使用 QCNF-3 时，观察到最高的去除效率为 295.1mgg(-1)。本文报道的 QCNF 为传统合成絮凝剂提供了一种可持续和可生物降解的替代品，用于含染料废水的脱色。
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