XJIPC OpenIR  > 环境科学与技术研究室
PH dependence and thermodynamics of Hg(II) adsorption onto chitosan-poly(vinyl alcohol) hydrogel adsorbent
Wang, Xiaohuan; Sun, Ruzhong; Wang, Chuanyi
2014
发表期刊Colloids and Surfaces A: Physicochemical and Engineering Aspects
ISSN9277757
卷号441期号:1页码:51-58
摘要The chitosan/poly(vinyl alcohol) (CTS-PVA) hydrogel adsorbent with three-dimensional network structure showed superior adsorption properties for Hg(II) ions. The pH influence study showed Hg(II) adsorption on the hydrogel adsorbent is strongly pH-dependent. The adsorption capacity in pH 2.00 solution (200.20. mg/g) is higher than that in pH 11.00 solution (140.27. mg/g), which indicated that Hg(II) adsorption on the hydrogel adsorbent was not only by electrostatic interactions. FT-IR spectral analysis before and after Hg(II) adsorption represented that the functional groups responsible for Hg(II) adsorption changed with the pH of solutions. Thermodynamic studies revealed that Hg(II) adsorption on the hydrogel adsorbent is a favorable, spontaneous, and endothermic chemisorption process. The binding force between Hg(II) ions and functional groups was strengthened at high temperatures, which made the adsorption more favorable at high temperatures. The adsorption process fitted well by the Langmuir and the Freundlich isotherm models. The Langmuir maximum adsorption capacity increased from 697.70 to 950.62. mg/g with increasing temperature from 20 to 60. °C. This study will contribute to an in-depth understanding of adsorption phenomena, and provide a scientific and engineering basis for the practical application of the CTS-PVA hydrogel adsorbent.
关键词Ph Dependence Thermodynamics Chitosan/poly(Vinyl Alcohol) Hydrogel Adsorbent Hg(Ii) Adsorption
DOI10.1016/j.colsurfa.2013.08.068
收录类别SCI
WOS记录号WOS:000329260800007
引用统计
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/3810
专题环境科学与技术研究室
作者单位Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China;Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China
推荐引用方式
GB/T 7714
Wang, Xiaohuan,Sun, Ruzhong,Wang, Chuanyi. PH dependence and thermodynamics of Hg(II) adsorption onto chitosan-poly(vinyl alcohol) hydrogel adsorbent[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects,2014,441(1):51-58.
APA Wang, Xiaohuan,Sun, Ruzhong,&Wang, Chuanyi.(2014).PH dependence and thermodynamics of Hg(II) adsorption onto chitosan-poly(vinyl alcohol) hydrogel adsorbent.Colloids and Surfaces A: Physicochemical and Engineering Aspects,441(1),51-58.
MLA Wang, Xiaohuan,et al."PH dependence and thermodynamics of Hg(II) adsorption onto chitosan-poly(vinyl alcohol) hydrogel adsorbent".Colloids and Surfaces A: Physicochemical and Engineering Aspects 441.1(2014):51-58.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
pH dependence and th(1280KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Wang, Xiaohuan]的文章
[Sun, Ruzhong]的文章
[Wang, Chuanyi]的文章
百度学术
百度学术中相似的文章
[Wang, Xiaohuan]的文章
[Sun, Ruzhong]的文章
[Wang, Chuanyi]的文章
必应学术
必应学术中相似的文章
[Wang, Xiaohuan]的文章
[Sun, Ruzhong]的文章
[Wang, Chuanyi]的文章
相关权益政策
暂无数据
收藏/分享
文件名: pH dependence and thermodynamics of Hg(II) adsorption onto chitosan-poly(vinyl alcohol) hydrogel adsorbent .pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。