文献类型：期刊文献

英文题名：Adsorption characteristics of [Fe(III)-EDTA]- on granular activated carbon from aqueous solutions

作者：Yang, Xiao-Juan[1]; Long, Xiang-Li[1]; Yuan, Wei-Kang[1]

机构：[1] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

年份：2013

卷号：32

期号：3

起止页码：470

外文期刊名：Environmental Progress and Sustainable Energy

收录：EI(收录号：20133016528088)

语种：英文

外文关键词：Adsorption isotherms - Iron compounds - Activated carbon - Temperature - Dyes - Kinetic parameters - Kinetic theory - Solutions

摘要：In this study, the adsorption of [Fe(III)-EDTA]- on coconut-activated carbon from aqueous solutions has been studied in a batch stirred cell. Experiments have been carried out to investigate the effects of temperature, [Fe(III)-EDTA]- concentration, pH, and activated carbon mass on [Fe(III)-EDTA]- adsorption. The experimental results manifest that high temperature is favorable to the adsorption of [Fe(III)-EDTA] - on the activated carbon. The [Fe(III)-EDTA]- adsorption on activated carbon increases with its concentration in the aqueous solutions. However, the [Fe(III)-EDTA]- adsorption on activated carbon decreases as the pH rises. The [Fe(III)-EDTA]- adsorption on per gram of activated carbon decreases as the activated carbon mass increases. The kinetic study shows that [Fe(III)-EDTA]- adsorption on the activated carbon is in good compliance with the pseudo-second-order kinetic model. The Langmuir and Freundlich equilibrium isotherm models are found to provide a good fitting of the adsorption data. Thermodynamic parameters such as Ea, ΔG0, ΔH0, and ΔS0 for adsorption reaction are estimated. Copyright ? 2012 American Institute of Chemical Engineers.