文献类型：期刊文献

英文题名：Removal of bisphenol A from aqueous solution using modified fibric peat as a novel biosorbent

作者：Zhou, Yanbo[1];Chen, Li[1];Lu, Ping[1];Tang, Xuanyi[1];Lu, Jun[1]

机构：[1]E China Univ Sci & Technol, Coll Resource & Environm Engn, Shanghai 200237, Peoples R China

年份：2011

卷号：81

期号：2

起止页码：184

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20113614313929);WOS:【SCI-EXPANDED(收录号:WOS:000296108500009)】；

基金：The authors are grateful for the financial support provided by Shanghai Municipal Natural Science Foundation (No. 10ZR1408000) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (No. 20100074120012).

语种：英文

外文关键词：Bisphenol A; Sorption; Peat; Modification; Quaternary ammonium

摘要：Fibric peat was modified with hexadecyltrimethylammonium bromide (HTAB) and its efficiency as a biosorbent for the removal of endocrine disrupting chemical-bisphenol A (BPA) was investigated. The HTAB-modified peat displayed a faster initial BPA sorption and substantially higher capacity than the unmodified peat over a wide concentration range. Kinetic study showed that the sorption followed the pseudo-second-order kinetic model. The maximum sorption capacity of 31.40 mg g(-1) was obtained at initial concentration of 45 mg L-1. The BPA sorption to HTAB-modified peat was better described by Freundlich isotherm, while Langmuir isotherm fits better to the BPA sorption against unmodified peat. Comparing with raw fibric peat, the HTAB-modified peat removed more BPA molecules and the desorption rate was much lower. It shows that the improved hydrophobic interactions are the dominant mechanism and the chemical modification of the peat surface greatly enhanced the sorption capacity toward organic compound dissolved in water. (C) 2011 Elsevier B.V. All rights reserved.