Co-pyrolysis of polyester and cotton via thermogravimetric analysis and adsorption mechanism of Cr(VI) removal by carbon in aqueous solution

被引：29
作者：
Zhong, Mengqi [1 ]
Chen, Si [1 ,2 ]
Wang, Teng [1 ,2 ]
Liu, Jingxin [1 ,2 ]
Mei, Meng [1 ,2 ]
Li, Jinping [1 ,2 ]
机构：
[1] Wuhan Text Univ, Sch Environm Engn, Wuhan 430073, Peoples R China
[2] Wuhan Text Univ, Engn Res Ctr Clean Prod Text Dyeing & Printing, Minist Educ, Wuhan 430073, Peoples R China
来源：
JOURNAL OF MOLECULAR LIQUIDS | 2022年 / 354卷
基金：
中国国家自然科学基金;
关键词：
Synergy effect; Thermogravimetric; Polyester-cotton; Adsorption mechanism; ACTIVATED CARBON; HEXAVALENT CHROMIUM; CHEMICAL ACTIVATION; EFFICIENT REMOVAL; SURFACE-CHEMISTRY; CR(III) REMOVAL; WASTE-WATER; BIOMASS; PERFORMANCE; BIOCHAR;
D O I：
10.1016/j.molliq.2022.118902
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The purpose of this study is to explore the synergy effect of cotton and polyester in pyrolysis process and make full use of the carbon as an adsorbent for Cr(VI) removal. The co-pyrolysis and decomposition characteristics of cotton and polyester were studied by thermogravimetric analysis (TGA) to analyze the synergy effect between them. The physical and chemical characteristic of polyester-cotton carbon with the best synergy ratio were detected with SEM-EDS, BET, XRD, FTIR and XPS. The FTIR and XPS before/after adsorption of Cr(VI) accompanied by kinetic fitting and adsorption isotherm were applied to analyze the adsorption mechanism, and adsorption condition were also discussed. The adsorption mechanism includes electrostatic action, reduction action and complexation. The study shows that the polyestercotton carbon had great application potential to remove Cr(VI) by using the synergy effect of cotton and polyester. (C) 2022 Elsevier B.V. All rights reserved.
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页数：11
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