Removal of Reactofix golden yellow 3 RFN from aqueous solution using wheat husk - An agricultural waste

被引:339
作者
Gupta, Vinod Kumar [1 ]
Jain, Rajeev
Varshney, Shaily
机构
[1] Indian Inst Technol, Dept Chem, Roorkee 247667, Uttar Pradesh, India
[2] Jiwaji Univ, Dept Environm Chem, Gwalior 474011, India
关键词
azo dyes; reactofix golden yellow 3 RFN; adsorption; wheat husk;
D O I
10.1016/j.jhazmat.2006.08.048
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The wheat husk, an agricultural by-product, has been activated and used as an adsorbent for the adsorption of Reactofix golden yellow 3 RFN from aqueous solution. In this work, adsorption of Reactofix golden yellow 3 RFN on wheat husk and charcoal has been studied by using batch studies. The equibrium adsorption level was determined to be a function of the solution pH, adsorbent dosage, dye concentration and contact time. The equilibrium adsorption capacities of wheat husk and charcoal for dye removal were obtained using Freundlich and Langmuir isotherms. Thermodynamic parameters such as the free energies, enthalpies and entropies of adsorption were also evaluated. Adsorption process is considered suitable for removing color, COD from wastewater. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:443 / 448
页数:6
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