文献类型：期刊文献

英文题名：Removal of Anionic Dyes from Aqueous Solutions by Cellulose-Based Adsorbents: Equilibrium, Kinetics, and Thermodynamics

作者：Wang, Yixi[1,2];Zhao, Linyan[1,2];Peng, Huili[1,2];Wu, Jianning[1,2];Liu, Zhiyong[1,2];Guo, Xuhong[1,2,3]

机构：[1]Shihezi Univ, Sch Chem & Chem Engn, Shihezi 832003, Xinjiang, Peoples R China;[2]Engn Res Ctr Mat Oriented Chem Engn Xinjiang Bing, Key Lab Green Proc Chem Engn Xinjiang Bingtuan, Key Lab Mat Oriented Chem Engn Xinjiang Uygur Aut, Shihezi 832003, Xinjiang, Peoples R China;[3]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2016

卷号：61

期号：9

起止页码：3266

外文期刊名：JOURNAL OF CHEMICAL AND ENGINEERING DATA

收录：;EI(收录号：20163702797723);WOS:【SCI-EXPANDED(收录号:WOS:000383005500040)】；

基金：This work was supported financially by funding from the National Natural Science Foundation of China (21367022 and 21467024) and Bingtuan Innovation Team in Key Areas (2015BD003).

语种：英文

外文关键词：Adsorption - Adsorption isotherms - Cellulose - Wastewater treatment - Kinetics - Solutions - Scanning electron microscopy - Stripping (dyes) - Azo dyes

摘要：A novel cellulose (CE)-based adsorbent was synthesized by polyacrylamide grafted quaternized cellulose (PAM-g-QC) to remove anionic dyes. The elemental analysis results showed that there were abundant amino groups on adsorbents and scanning electron microscopy indicated the structure was porousproperties that were a benefit to increase the adsorption ability. The adsorption ability was specifically investigated in different temperatures. Adsorption isotherms including the Langmuir, Freundlich, and Temkin isotherm models were studied at different temperatures (303323 K), and the maximum theoretical adsorption capacity of the adsorbents was 380.084 mg g(1) for Congo red (CR) and 349.284 mg g(1) for Eriochrome blue SE (EBSE) at 323 K by the Langmuir isotherm model. The adsorption data was fitted to the adsorption kinetics (pseudo-first-order kinetic, pseudo-second-order kinetic, and intraparticle diffusion models), and the pseudo-second-order kinetic model showed a better fit for the adsorption of CR and EBSE. Thermodynamic parameters (Delta H degrees, Delta S degrees, and Delta G degrees) showed that the adsorption of EBSE and CR was feasible, endothermic, and spontaneous from 303 to 323 K. The adsorption and desorption mechanism of CR and EBSE also was investigated in this study, which verified that electrostatic adsorption played a main role between adsorbents and adsorbates. A comparison with other cellulose-based adsorbents confirmed that the CE/PAM-g-QC adsorbent possessed excellent potential and practical value in dye wastewater treatment.