Adsorption of carmoisine A from wastewater using waste materials-Bottom ash and deoiled soya
Adsorption of carmoisine A from wastewater using waste materials-Bottom ash and deoiled soya
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DOI：
10.1016/j.jcis.2009.03.056
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发表时间：
2009-07-01
影响因子：
9.9
通讯作者：
Mittal, Jyoti
中科院分区：
文献类型：
--
作者：
Gupta, Vinod K.;Mittal, Alok;Mittal, Jyoti
本研究涉及的应用底灰，电厂废物，脱油大豆，农业废物，用于吸附去除胭脂红A染料的水溶液。本文结合了这些有效的吸附剂上的染料的吸附特性的比较研究沿着与时间，温度，浓度和pH值的影响。分析技术已被用来找到孔的性质和吸附材料的特性。还进行了批吸附研究、动力学研究和柱操作，以了解吸附剂的染料提取能力。采用Freundlich、Langmuir、Tempkin和Dubininin-Radushkevich吸附等温模型研究了染料的吸附行为。由Langmuir吸附方程确定的底灰和脱油大豆在323 K时的单分子层吸附容量分别为1.78 x 10（-5）和5.62 x 10（-5）mol g（-1）。动力学测量表明，在这两种吸附和每种情况下的伪二级动力学参与控制的颗粒扩散过程。柱实验表明，这两种吸附剂可以实际用于消除有害染料从流出物和染料材料可以通过洗脱NaOH通过耗尽柱回收。(C)2009 Elsevier Inc. All rights reserved.
The present study deals with the application of bottom ash, a power plant waste, and deoiled soya, an agricultural waste, for the adsorptive removal of carmoisine A dye from its aqueous solutions. This paper incorporates a comparative study of the adsorption characteristics of the dye on these effective adsorbents along with effects of time, temperature, concentration, and pH. Analytical techniques have been employed to find pore properties and characteristics of adsorbent materials. Batch adsorption studies, kinetic studies, and column operations have also been performed to understand the dye extraction ability of the adsorbents. The adsorption behavior of the dye has been studied using Freundlich, Langmuir, Tempkin, and Dubinin-Radushkevich adsorption isotherm models. The monolayer adsorption capacity determined from the Langmuir adsorption equation has been found as 1.78 x 10(-5) and 5.62 x 10(-5) mol g(-1) at 323 K for bottom ash and deoiled soya, respectively. Kinetic measurements suggest the involvement of pseudo-second-order kinetics in both adsorptions and each case is controlled by a particle diffusion process. Column experiments demonstrated that both adsorbents could be practically utilized in elimination of hazardous dye from effluent and dye material can be recovered by eluting NaOH through the exhausted columns. (C) 2009 Elsevier Inc. All rights reserved.