文献类型：期刊文献

英文题名：Adsorption of dye C.I. Reactive red 15 onto montmorillonite: Kinetics and adsorption isotherms

作者：Huang, Chengcai[1]; Qiu, Muqing[1]; Bao, Linfa[1]; Zhang, Hao[2]

机构：[1] College of Life Science, Shaoxing University, Shaoxing, 312000, China; [2] Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China

年份：2019

卷号：18

期号：2

起止页码：613

外文期刊名：Nature Environment and Pollution Technology

收录：EI(收录号：20192807159025)、Scopus(收录号：2-s2.0-85068375044)

基金：This study was financially supported by the project of Science and Technology plan in Shaoxing City (2017B70058)

语种：英文

外文关键词：Adsorption isotherms - Clay minerals - Dyes - Fourier transform infrared spectroscopy - Monolayers

外文摘要：The adsorption of dye C.I. Reactive Red 15 in aqueous solution onto montmorillonite was carried out in detail. The operation parameters influencing the adsorption process of dye C.I. Reactive Red 15 such as contact time and initial dye concentration were studied. Physicochemical characterizations including microscopy and Fourier transform infrared spectroscopy analyses of the surface of montmorillonite were carried out. The kinetic study was performed by the pseudo first order and the pseudo second order reactions. According to the experimental data, the pseudo second order model better described the adsorption of dye onto montmorillonite. It implies that the predominant process is chemisorption, which involves a sharing of electrons between the adsorbate and the surface of the adsorbent. The adsorption isotherms were studied by Langmuir model and Freundlich model. The results indicated that the adsorption followed the Langmuir model. The dye C.I. Reactive Red 15 adsorption onto montmorillonite was monolayer adsorption. ? 2019 Technoscience Publications. All rights reserved.