中国科学院新疆理化技术研究所机构知识库
Advanced  
XJIPC OpenIR  > 环境科学与技术研究室  > 期刊论文
题名: PH dependence and thermodynamics of Hg(II) adsorption onto chitosan-poly(vinyl alcohol) hydrogel adsorbent
作者: Wang, Xiaohuan; Sun, Ruzhong; Wang, Chuanyi
关键词: pH dependence ; Thermodynamics ; Chitosan/poly(vinyl alcohol) hydrogel adsorbent ; Hg(II) ; Adsorption
刊名: Colloids and Surfaces A: Physicochemical and Engineering Aspects
发表日期: 2014
DOI: 10.1016/j.colsurfa.2013.08.068
卷: 441, 期:1, 页:51-58
收录类别: SCI
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.
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/3810
Appears in Collections:环境科学与技术研究室_期刊论文

Files in This Item:
File Name/ File Size Content Type Version Access License
pH dependence and thermodynamics of Hg(II) adsorption onto chitosan-poly(vinyl alcohol) hydrogel adsorbent .pdf(1280KB)期刊论文作者接受稿开放获取View 联系获取全文

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

Recommended Citation:
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.
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Wang, Xiaohuan]'s Articles
[Sun, Ruzhong]'s Articles
[Wang, Chuanyi]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Wang, Xiaohuan]‘s Articles
[Sun, Ruzhong]‘s Articles
[Wang, Chuanyi]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
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
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace