[1]严毅,张娈娈,廖运文,等.PEI改性碳纳米管吸附水溶液中的六价铬离子[J].西华师范大学学报(自然科学版),2017,38(01):57-62.[doi:10.16246/j.issn.1673-5072.2017.01.010]
 YAN Yia,b,ZHANG Luanluana,et al.Absorption of Hexavalent Chromium from Aqueous Solutions by Carbon Nanotubes Modified with PEI[J].Journal of China West Normal University(Natural Sciences),2017,38(01):57-62.[doi:10.16246/j.issn.1673-5072.2017.01.010]
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PEI改性碳纳米管吸附水溶液中的六价铬离子()
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《西华师范大学学报(自然科学版)》[ISSN:1673-5072/CN:51-1699/N]

卷:
38
期数:
2017年01期
页码:
57-62
栏目:
出版日期:
2017-03-20

文章信息/Info

Title:
Absorption of Hexavalent Chromium from Aqueous Solutions by Carbon Nanotubes Modified with PEI
作者:
严毅张娈娈廖运文高和军
(西华师范大学 a化学合成与污染控制四川省重点实验室; b应用化学研究所; c环境科学与工程学院,四川 南充637009)
Author(s):
YAN YiabZHANG LuanluanabLIAO YunwenabcGAO Hejunab
(a.Sichuan Provincial Key Laboratory of Chemical Synthesis and Pollution Control,b.Institute of Applied Chemistry, c.College of Environmental Science and Engineering,China West Normal University,Nanchong Sichuan 637009,China)
关键词:
碳纳米管改性吸附Cr(VI)
Keywords:
carbon nanotubesmodifyabsorptionCr(VI)
分类号:
X7031;TQ0283;O614.6
DOI:
10.16246/j.issn.1673-5072.2017.01.010
文献标志码:
A
摘要:
实验以聚乙烯亚胺(PEI)改性碳纳米管为吸附剂除去水溶液中的Cr(VI)。系统考察了溶液pH,吸附剂用量,吸附时间,温度等因素对吸附行为的影响。实验表明:25 ℃时,pH为2.85时吸附效果最佳,60 min内可达到吸附平衡。准二级模型可很好的描述吸附动力学过程。吸附等温线和吸附热力学研究表明,改性碳纳米管吸附Cr(VI)遵循Freundlich等温模型。
Abstract:
In the experiment,polyethyleneimine(PEI) is chosen to modify carbon nanotubes as an absorbent to get rid of Cr(VI) in aqueous solution.A systematic investigation is conducted on its absorption properties of Cr(VI) under the influence of factors like pH of aqueous solution,contact time, temperature,and dosage and so on.It is revealed that the optimal pH for the absorption is about 2.85 under which the absorption process reaches equilibrium in about 60 min.The absorption kinetics in its process is better described by Pseudosecondorder model.Absorption isotherm and absorption thermodynamic calculation shows that the absorption process of Carbon Nanotubes modified follows Langmuir isotherm model.

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备注/Memo

备注/Memo:

收稿日期:2016-09-10基金项目:四川省科技厅应用基础项目(2015JY0042),四川省教育厅重点项目(15ZA0147),西华师范大学博士科研启动基金项目(14E015)
作者简介:严毅(1990—),男,四川绵阳人,硕士研究生,主要从事无机功能材料的研究。
通信作者:廖运文(1971—),男,四川南充人,博士,教授,主要从事压电铁电陶瓷、薄膜与元器件、有机无机纳米复合材料等方面的研究。 E-mail: liao_yw@163.com
引用本文:严毅,张娈娈,廖运文,等.PEI改性碳纳米管吸附水溶液中的六价铬离子[J].西华师范大学学报(自然科学版),2017,38(1):57-62.[YAN Yi,ZHANG Luanluan,LIAO Yunwen,et al.Absorption of hexavalent chromium from aqueous solutions by carbon nanotubes modified with PEI[J].Journal of China West Normal University(Natural Sciences),2017,38(1):57-62.]PEI改性碳纳米管吸附水溶液中的六价铬离子
更新日期/Last Update: 2017-03-20