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Preparation of montmorillonite-alginate nanobiocomposite for adsorption of a textile dye in aqueous phase: Isotherm, kinetic and experimental design approaches

机译:蒙脱石-藻酸盐纳米生物复合材料在水相中吸附纺织品染料的制备:等温线,动力学和实验设计方法

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摘要

In the present work, adsorption of basic red 46 (BR46) by nano-sized montmorillonite (MMT)/calcium alginate (CA) composite was optimized using central composite design. The maximum dye removal of 85.07% was obtained at an initial dye concentration of 30 mg L-1, adsorbent dosage of 2 g L-1, contact time of 60 min and temperature of 25 degrees C. The adsorption capacity decreased with decreasing both initial pH and mixing speed. The pseudo-second order kinetic model had the highest correlation coefficient (R-2 = 1.00). Based on the Langmuir isotherm model, the maximum adsorption capacity of MMT/CA was about 35 mg g(-1). (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
机译:在目前的工作中,使用中心复合材料设计优化了纳米蒙脱土(MMT)/藻酸钙(CA)复合材料对碱性红46(BR46)的吸附。在初始染料浓度为30 mg L-1,吸附剂剂量为2 g L-1,接触时间为60分钟和温度为25摄氏度的情况下,获得的最大染料去除率为85.07%。 pH和混合速度。拟二阶动力学模型具有最高相关系数(R-2 = 1.00)。基于Langmuir等温模型,MMT / CA的最大吸附容量约为35 mg g(-1)。 (C)2014大韩工业化学工程学会。由Elsevier B.V.发布。保留所有权利。

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