文献类型：期刊文献

中文题名：改性磺化泥炭去除水中双酚A的研究

英文题名：Removal of bisphenol A from aqueous solution by modified sulfonated peat

作者：汤烜祎[1];周彦波[1];徐燕晓[1];李杏彬[1];赵庆[1];鲁军[1]

机构：[1]华东理工大学资源与环境工程学院,上海200237

年份：2011

卷号：33

期号：2

起止页码：29

中文期刊名：环境污染与防治

外文期刊名：Environmental Pollution & Control

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD_E2011_2012】；

基金：上海市自然科学基金资助项目(No.10ZR1408000);上海市重点学科资助项目(No.B506);华东理工大学选拔培养优秀青年教师科研专项基金资助项目(No.YB0157114)

语种：中文

中文关键词：泥炭;磺化;改性;双酚A

外文关键词：peat; sulfonation; modification; bisphenol A

摘要：采用十六烷基三甲基溴化铵（HTAB）对磺化泥炭进行接枝改性,并研究了双酚A在改性磺化泥炭上的吸附特性。研究发现,改性磺化泥炭的C元素由40.12%（质量分数,下同）增加到47.91%,其在水中的Zeta电位升高了27.0 mV。双酚A在磺化泥炭和改性磺化泥炭上的吸附过程符合准二级动力学模型和Freundlich等温吸附模型。采用颗粒扩散模型对双酚A吸附过程进行拟合,结果表明,在双酚A的吸附初始阶段发生了颗粒内扩散,且颗粒内扩散速率（ki）随双酚A初始浓度的增加而增加。当双酚A初始质量浓度为10.2~44.8 mg/L时,改性磺化泥炭对双酚A的平衡吸附量提高了33%~81%。处理双酚A初始质量浓度约为90 mg/L的模拟废水的实验表明,当吸附剂（磺化泥炭和改性磺化泥炭）投加量（采用吸附剂质量与模拟废水体积的之比来表征）为5 mg/L时,改性磺化泥炭对双酚A的去除率达95.0%。此外,还发现HTAB接枝可以减少苯酚竞争吸附对改性磺化泥炭吸附双酚A的影响。
Sulfonated peat was modified by hexadecyltrimethylammonium bromide（HTAB） for removal of bisphenol A from aqueous solution.The adsorption of bisphenol A by modified sulfonated peat was investigated.The sulfonation modification increased he organic carbon content of raw peat from 40.12% to 47.91%,the Zeta potential of raw peat also increased by 27.0 mV.The pesudo-second-order model and Freundlich model fit the adsorption data well.The intraparticle diffusion model can describe the initial stage of adsorption,which suggests that bisphenol A migrated to sulfonated peat by intraparticle diffusion in the beginning of adsorption.In addition,the intraparticle diffusion rate ki increased with the increase of bisphenol A concentration.At bisphenol A initial concentration of 10.2-44.8 mg/L,the equilibrium adsorption capacity of modified sulfonated peat increased by 33%-81% compared with that of the unmodified one.The bisphenol A removal reached 95.0% when its initial concentration and sorbent dosage（madsorbent/Vsolution）was 90 mg/L and 5 mg/L,respectively.It was also found that HTAB could reduce the influence of phenol competition on bisphenol A adsorption.