中国科学院青海盐湖研究所机构知识库
Advanced  
ISL OpenIR  > 青海盐湖研究所知识仓储  > 期刊论文
题名: Boron adsorption using a new boron-selective hybrid gel and thecommercial resin D564
作者: 刘海宁 ;  叶秀深 ;  李权 ;  Kim, Taehoon ;  卿彬菊 ;  Guo, Min ;  Ge, Fei ;  吴志坚 ;  Lee, Kangtaek
刊名: COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
出版日期: 2009
卷号: 341, 期号:1-3, 页码:118-126
关键词: Boron ;  Adsorption ;  Boron-selective resin ;  Hybrid gel ;  Adsorption
语种: A new hybrid gel with boron-selective functional groups is prepared with tetraethoxysilane (TEOS), (3-glycidoxypropyl)trimethoxysilane (GPTMS), and a new precursor (W) synthesized from GPTMS and N-methylglucamine (MG). We investigate the boron adsorption onto the hybrid gel and the commercial resin D564 in aqueous solution by varying the initial boron concentration, pH, ionic strength, and temperature. Adsorption of both the hybrid gel and the D564 can be described by the second-order kinetics and the hybrid gel shows the lower second-order rate constant and the initial adsorption rate than the commercial resin. A maximum boron adsorption occurs at pH 4-9, which can be explained by the adsorption suppression by H(+) ions at low pH and the weakened complexation by electrostatic repulsion at high pH. Ionic strength of the Solution affects both the adsorption kinetics and thermodynamics, and it has a more pronounced effect on the kinetics of the hybrid gel than the D564. For both the hybrid gel and the D564, adsorption was found to be a chemisorption, which may be more advantageous in removal of boron from water than physisorption due to a higher adsorption capacity and better selectivity. Compared with other boron-selective adsorbents, the boron-selective hybrid gel in this study is easy to prepare, and has a good mechanical strength and an adsorption capacity (1.15 mmol g(-1)). (C) 2009 Elsevier B.V. All rights reserved. A new hybrid gel with boron-selective functional groups is prepared with tetraethoxysilane (TEOS), (3-glycidoxypropyl)trimethoxysilane (GPTMS), and a new precursor (W) synthesized from GPTMS and N-methylglucamine (MG). We investigate the boron adsorption onto the hybrid gel and the commercial resin D564 in aqueous solution by varying the initial boron concentration, pH, ionic strength, and temperature. Adsorption of both the hybrid gel and the D564 can be described by the second-order kinetics and the hybrid gel shows the lower second-order rate constant and the initial adsorption rate than the commercial resin. A maximum boron adsorption occurs at pH 4-9, which can be explained by the adsorption suppression by H(+) ions at low pH and the weakened complexation by electrostatic repulsion at high pH. Ionic strength of the Solution affects both the adsorption kinetics and thermodynamics, and it has a more pronounced effect on the kinetics of the hybrid gel than the D564. For both the hybrid gel and the D564, adsorption was found to be a chemisorption, which may be more advantageous in removal of boron from water than physisorption due to a higher adsorption capacity and better selectivity. Compared with other boron-selective adsorbents, the boron-selective hybrid gel in this study is easy to prepare, and has a good mechanical strength and an adsorption capacity (1.15 mmol g(-1)). (C) 2009 Elsevier B.V. All rights reserved.
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.isl.ac.cn/handle/363002/2105
Appears in Collections:青海盐湖研究所知识仓储(2014年之前)_期刊论文

Files in This Item:

There are no files associated with this item.


Recommended Citation:
Liu, Haining,Ye, Xiushen,Li, Quan,et al. Boron adsorption using a new boron-selective hybrid gel and thecommercial resin D564[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2009,341(1-3):118-126.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Liu, Haining]'s Articles
 [Ye, Xiushen]'s Articles
 [Li, Quan]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Liu, Haining]‘s Articles
 [Ye, Xiushen]‘s Articles
 [Li, Quan]‘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 
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!
Copyright © 2007-2017  中国科学院青海盐湖研究所 - Feedback
Powered by CSpace