高级搜索

碳纳米管对水中多氯联苯的吸附动力学

,  , 

downloadPDF

上一篇

下一篇

曹秀芹, 程琳, 李志强. 碳纳米管对水中多氯联苯的吸附动力学[J]. 环境工程学报, 2017, 11(9): 5041-5048. doi: 10.12030/j.cjee.201702134
引用本文: 曹秀芹, 程琳, 李志强. 碳纳米管对水中多氯联苯的吸附动力学[J]. 环境工程学报, 2017, 11(9): 5041-5048. doi: 10.12030/j.cjee.201702134
shu
CAO Xiuqin, CHENG Lin, LI Zhiqiang. Adsorption kinetics of carbon nanotubes on polychlorinated biphenyls in aqueous solution[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 5041-5048. doi: 10.12030/j.cjee.201702134
Citation: CAO Xiuqin, CHENG Lin, LI Zhiqiang. Adsorption kinetics of carbon nanotubes on polychlorinated biphenyls in aqueous solution[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 5041-5048. doi: 10.12030/j.cjee.201702134
shu

碳纳米管对水中多氯联苯的吸附动力学

  • 1.

    北京建筑大学城市雨水系统与水环境省部共建教育部重点实验室, 北京 100044

  • 基金项目:

    北京市教委（北京市自然科学基金）科技重点项目（KZ201310016017）

  • 中图分类号: X703

Adsorption kinetics of carbon nanotubes on polychlorinated biphenyls in aqueous solution

  • 1.

    Key Laboratory of Urban Storm Water System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing 100044, China

  • Fund Project:

  • 摘要: 通过静态吸附实验研究了碳纳米管（CNTs）对水中多氯联苯（PCBs）的吸附动力学特性，包括1种单壁碳纳米管（SWCNTs）和3种多壁碳纳米管（MWCNTs），并对4种CNTs的物理特征及孔径分布进行了分析。结果表明，SWCNTs的比表面积和总孔容最大，分别为228.210 m2·g-1和1.515 4 cm3·g-1。CNTs对PCBs的吸附速率很快，40 min吸附量可达到平衡时的90%以上，80 min左右达到吸附平衡，且SWCNTs的吸附能力远大于MWCNTs。运用拟一级和拟二级动力学模型对实验数据进行拟合，表明拟二级模型更适合描述CNTs对PCBs的吸附过程。
    Abstract: Static experiments were carried out to investigate adsorption kinetics of polychlorinated biphenyls (PCBs) on carbon nanotubes (CNTs) from aqueous solution, including a single-walled carbon nanotubes (SWCNTs) and three kinds of multi-walled carbon nanotubes (MWCNTs). And the physical characteristics and pore size distribution of CNTs were analyzed. The results showed that SWCNTs' specific surface area and total pore volume were the largest, which were 228.210 m2·g-1 and 1.515 4 cm3·g-1, respectively. The adsorption rate of CNTs on PCBs was so fast that the adsorption capacity of 40 min can reach more than 90% of equilibrium, and the adsorption equilibrium was reached at about 80 min. Furthermore, the adsorption capacity of SWCNTs was much larger than that of MWCNTs. The pseudo-first-order model and pseudo-second-order model were used to fit the experimental data, which indicated that the pseudo-second-order model showed more suitable to describe the adsorption process of PCBs to CNTs.
  • 加载中
  • [1] 余刚, 牛军峰, 黄俊. 持久性有机污染物:新的全球性环境问题[M]. 北京:科学出版社, 2005
    [2] 臧文超, 王琪. 中国持久性有机污染物环境管理[M]. 北京:化学工业出版社, 2013
    [3] 何秋生, 张桂香, 闫雨龙,等. 持久性有机物污染及控制[M]. 北京:化学工业出版社, 2015
    [4] 臧文超, 黄启飞. 重点区域持久性有机污染物污染现状及其管理对策[M]. 北京:化学工业出版社, 2014
    [5] 王冬. 多氯联苯(PCBs)的环境生态毒性研究[D]. 杭州:浙江大学, 2006
    [6] VATER S T, VELAZQUEZ S F, COGLIANO V J. A case study of cancer data set combinations for PCBs[J]. Regulatory Toxicology & Pharmacology, 1995, 22(1):2-10
    [7] SAFE S H. Polychlorinated biphenyls (PCBs):Environmental impact, biochemical and toxic responses, and implications for risk assessment[J]. Critical Reviews in Toxicology, 1994, 24(2):87-149
    [8] 曹秀芹, 程琳, 吕小凡. 城市污水中多氯联苯的存在现状及对比分析[J]. 科学技术与工程, 2017, 17(7):128-132
    [9] 谢武明, 胡勇有, 刘焕彬, 等. 城市污水中PCBs的分析及其QA/QC研究[J]. 中国环境监测, 2005, 21(3):35-39
    [10] 刘俊建. 典型持久性有机污染物在城市污水处理过程中的迁移转化规律研究[D]. 西安:西安建筑科技大学, 2011
    [11] BERGQVIST P A, AUGULYT L, JURJONIENE V. PAH and PCB removal efficiencies in Umeå(Sweden) and Šiauliai(Lithuania) municipal wastewater treatment plants[J]. Water, Air, and Soil Pollution, 2006, 175(1/2/3/4):291-303
    [12] BLANCHARD M, TEIL M J, OLLIVON D, et al. Origin and distribution of polyaromatic hydrocarbons and polychlorobiphenyls in urban effluents to wastewater treatment plants of the Paris area(France)[J]. Water Research, 2001, 35(15):3679-3687
    [13] 孙明礼, 成荣明, 徐学诚,等. 碳纳米管对酚类物质的吸附研究[J]. 东北师大学报(自然科学版), 2004, 36(4):71-75
    [14] 陈光才. 碳纳米管对污染物的吸附[M]. 北京:化学工业出版社, 2013
    [15] 张海波. 粉末活性炭对水中PCBs的吸附性能及主要影响因素研究[D]. 哈尔滨:哈尔滨工业大学, 2011
    [16] DENG S, ZHANG Q, NIE Y, et al. Sorption mechanisms of perfluorinated compounds on carbon nanotubes[J]. Environmental Pollution, 2012, 168(5):138-144
    [17] OLESZCZUK P. Sorption of phenanthrene by sewage sludge during composting in relation to potentially bioavailable contaminant content[J]. Journal of Hazardous Materials, 2009, 161(2/3):1330-1337
    [18] PAN B, XING B. Adsorption mechanisms of organic chemicals on carbon nanotubes[J]. Environmental Science & Technology, 2009, 42(24):9005-9013
    [19] HAWKER D W, CONNELL D W. Octanol-water partition coefficients of polychlorinated biphenyl congeners[J]. Environmental Science & Technology, 1988, 22(4):382-387
    [20] YANG K, WANG X, ZHU L, et al. Competitive sorption of pyrene, phenanthrene, and naphthalene on multi-walled carbon nanotubes[J]. Environmental Science & Technology, 2006, 40(18):5804-5810
    [21] LU C, SU F. Adsorption of natural organic matter by carbon nanotubes[J]. Separation & Purification Technology, 2007, 58(1):113-121
    [22] HYUNG H, KIM J H. Natural organic matter(NOM) adsorption to multi-walled carbon nanotubes:Effect of NOM characteristics and water quality parameters[J]. Environmental Science & Technology, 2008, 42(12):4416-4421
    [23] CHANG M Y, JUANG R S. Adsorption of tannic acid, humic acid, and dyes from water using the composite of chitosan and activated clay[J]. Journal of Colloid & Interface Science, 2004, 278(1):18-25
    [24] OFOMAJA A E, NAIDOO E B, Modise S J. Kinetic and pseudo-second-order modeling of lead biosorption onto pine cone powder[J]. Industrial & Engineering Chemistry Research, 2010, 49(6):2562-2572
  • 加载中
WeChat 点击查看大图
计量
  • 文章访问数:  1838
  • HTML全文浏览数:  1481
  • PDF下载数:  488
  • 施引文献:  0
出版历程
  • 收稿日期:  2017-04-06
  • 刊出日期:  2017-08-26

碳纳米管对水中多氯联苯的吸附动力学

  • 1. 北京建筑大学城市雨水系统与水环境省部共建教育部重点实验室, 北京 100044
  • 收稿日期:  2017-04-06
基金项目:

北京市教委（北京市自然科学基金）科技重点项目（KZ201310016017）

摘要: 通过静态吸附实验研究了碳纳米管（CNTs）对水中多氯联苯（PCBs）的吸附动力学特性，包括1种单壁碳纳米管（SWCNTs）和3种多壁碳纳米管（MWCNTs），并对4种CNTs的物理特征及孔径分布进行了分析。结果表明，SWCNTs的比表面积和总孔容最大，分别为228.210 m2·g-1和1.515 4 cm3·g-1。CNTs对PCBs的吸附速率很快，40 min吸附量可达到平衡时的90%以上，80 min左右达到吸附平衡，且SWCNTs的吸附能力远大于MWCNTs。运用拟一级和拟二级动力学模型对实验数据进行拟合，表明拟二级模型更适合描述CNTs对PCBs的吸附过程。

English Abstract

    全文HTML

参考文献 (24)

目录

/

返回文章
返回

Copyright © 2019 中国科学院生态环境研究中心