[1]冯 馨,张 衡,王传娅,等.负载型零价铁对水体中2,4,6-三氯苯酚的去除[J].四川师范大学学报(自然科学版),2018,(05):654-661.[doi:10.3969/j.issn.1001-8395.2018.05.014]
 FENG Xin,ZHANG Heng,WANG Chuanya,et al.Removal of 2,4,6-trichlorophenol in Water by Supported Zero Valent Iron[J].Journal of SichuanNormal University,2018,(05):654-661.[doi:10.3969/j.issn.1001-8395.2018.05.014]
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负载型零价铁对水体中2,4,6-三氯苯酚的去除()
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《四川师范大学学报(自然科学版)》[ISSN:1001-8395/CN:51-1295/N]

卷:
期数:
2018年05期
页码:
654-661
栏目:
基础理论
出版日期:
2018-06-15

文章信息/Info

Title:
Removal of 2,4,6-trichlorophenol in Water by Supported Zero Valent Iron
文章编号:
1001-8395(2018)05-0654-08
作者:
冯 馨1 张 衡1 王传娅1 刘晓馨1毛 卉12 赵仕林12 廖 洋12*
1.四川师范大学 化学与材料科学学院, 四川 成都 610066; 2.西南土地资源评价与监测教育部重点实验室, 四川 成都 610066
Author(s):
FENG Xin1 ZHANG Heng1 WANG Chuanya1 LIU Xiaoxin1 MAO Hui12 ZHAO Shilin12 LIAO Yang12
1.College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, Sichuan; 2.Key Laboratory of Ministry of Education for Southwest Land Resource Evaluation and Monitoring, Chengdu 610066, Sichuan
关键词:
壳聚糖接枝杨梅单宁 零价铁 246-三氯苯酚 还原脱氯
Keywords:
chitosan grafting bayberry tannin zero valent iron 246-trichlorophenol dechlorination with reduction
分类号:
X592
DOI:
10.3969/j.issn.1001-8395.2018.05.014
文献标志码:
A
摘要:
以壳聚糖接枝杨梅单宁(CS-T)为载体,硼氢化钠为还原剂,制备负载型零价铁催化剂(Fe0/CS-T); 通过傅里叶红外光谱(FTIR)、X射线衍射(XRD)、透射电镜(TEM)、热重分析仪(TGA)对负载型零价铁催化剂的物理性质与结构进行了表征,零价铁分散于壳聚糖接枝杨梅单宁载体上,直径200~500 nm.研究其对水环境中2,4,6-三氯苯酚(2,4,6-TCP)的去除,结果表明:2,4,6-TCP在Fe0/CS-T的作用下发生了脱氯反应,脱氯率为60%左右,
Abstract:
The supported zero valent iron catalyst(Fe0/CS-T)was prepared by using biomass resource chitosan grafting bayberry tannin as carrier and using NaBH4 as reducing agent. The structure and physical properties of supported zero valent iron catalysts were characterized by fourier transform infrared spectrometer(FTIR), X-ray diffractometer(XRD), transmission electron microscope(TEM), and thermo gravimetric analyzer(TGA). The result showed that zero valent iron was dispersed on the carrier, and the size of the zero valent iron particle was 200-500 nm. The experiments were carried out for the removal of 2,4,6-trichlorophenol by this material. The results indicated that the dechlorination reaction happened with Fe0/CS-T, and the rate of dechlorination was about 60%. The kinetics of the reaction was in accordance with Langmuir-Hinshelwood kinetic model and it was a surface reaction. The optimum reaction conditions were that the dosage of Fe0/CS-T was 0.2 g, initial pH was 7, temperature was 25 ℃, reaction time was 2 h, the initial concentration of 2,4,6-TCP was 20 mg·L-1, and the removal rate was 88.94%. The removal rate decreased from 88.94% to 57.19% when the material was reused for 6 times.

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备注/Memo

备注/Memo:
收稿日期:2018-04-16 接受日期:2018-05-04
基金项目:国家自然科学基金(41641010和21406147)、四川省科技支撑项目(2016NZ0053)和成都市科技局项目(2014-HM01-00204-SF)
*通信作者简介:廖 洋(1979—),女,教授,主要从事环境材料、土壤修复的研究,E-mail:liaoyang_sicnu@163.com
更新日期/Last Update: 2018-04-15