生物可降解络合剂[S,S]-乙二胺二琥珀酸改性蛭石和活性炭及其对Fe（Ⅱ）的吸附性能

史海波; 祝建中; 陈胜鲁; 吉栋梁; 曹阳; 陈冠寰

doi:10.7524/j.issn.0254-6108.2014.06.011

环境化学

, , , , ,

史海波, 祝建中, 陈胜鲁, 吉栋梁, 曹阳, 陈冠寰. 生物可降解络合剂[S,S]-乙二胺二琥珀酸改性蛭石和活性炭及其对Fe（Ⅱ）的吸附性能[J]. 环境化学, 2014, 33(6): 949-955. doi: 10.7524/j.issn.0254-6108.2014.06.011

引用本文:

SHI Haibo, ZHU Jianzhong, CHEN Shenglu, JI Dongliang, CAO Yang, CHEN Guanhuan. Biodegradable chelant EDDS([S,S]-ethylenediamine disuccinic acid) modified vermiculite and activated carbon and their adsorption performance for Fe(Ⅱ)[J]. Environmental Chemistry, 2014, 33(6): 949-955. doi: 10.7524/j.issn.0254-6108.2014.06.011

Citation:

SHI Haibo, ZHU Jianzhong, CHEN Shenglu, JI Dongliang, CAO Yang, CHEN Guanhuan. Biodegradable chelant EDDS([S,S]-ethylenediamine disuccinic acid) modified vermiculite and activated carbon and their adsorption performance for Fe(Ⅱ)[J]. Environmental Chemistry, 2014, 33(6): 949-955. doi: 10.7524/j.issn.0254-6108.2014.06.011

生物可降解络合剂[S,S]-乙二胺二琥珀酸改性蛭石和活性炭及其对Fe（Ⅱ）的吸附性能

1.
河海大学浅水湖泊综合治理与资源开发教育部重点实验室及河海大学环境学院, 南京, 210098
基金项目:
教育部留学人员回国启动基金（1061-51200312）；中央高校（河海大学）基本科研业务费专项资金（B11020157）；江苏水利科技项目基金（1061-51146012）；江苏科技项目基金（1061-51334512）资助.

Biodegradable chelant EDDS([S,S]-ethylenediamine disuccinic acid) modified vermiculite and activated carbon and their adsorption performance for Fe(Ⅱ)

1.
Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
Fund Project:

摘要: 提出将Fe（Ⅱ）离子吸附络合稳定于活性炭、蛭石表面，再与H2O2组成新的非均相Fenton反应体系，通过加热、煮沸、干燥等简单的物理方法成功地将螯合剂EDDS（[S，S]-乙二胺二琥珀酸）修饰到蛭石和活性炭表面，对蛭石和活性炭进行改性.主要研究了包括pH、温度、初始浓度、反应时间对材料吸附性能的影响.研究表明，在相同条件下EDDS改性可以提高活性炭和蛭石对Fe（Ⅱ）离子的吸附容量，溶液pH、温度、初始浓度对吸附有较大影响.吸附等温线的拟合结果表明，Fe（Ⅱ）离子在 EDDS 修饰的活性炭和蛭石上吸附行为符合 Langmuir 吸附，其饱和吸附量都有所提高，且具有较大的吸附系数，这是由于修饰在活性炭和蛭石表面的 EDDS 和金属离子形成强烈的络合作用所致.
- 蛭石 /
- 活性炭 /
- 改性 /
- Fe（Ⅱ） /
- 吸附
Abstract: In this paper, activated carbon and vermiculite were used to adsorb Fe (Ⅱ) ions, to form a heterogeneous Fenton reaction system with H2O2. Modified vermiculite and activated carbon were prepared by coating chelating agent EDDS onto their surface with the simple physical methods like heating, boiling, drying. In the study, the influence of pH, temperature, initial concentration and reaction time on the adsorption performance of the material for Fe(Ⅱ) were investigated. The results showed that EDDS improved Fe(Ⅱ) ion adsorption capacity of both activated carbon and vermiculite. And pH, temperature and the initial Fe(Ⅱ) concentration had a great influence on the adsorption capacity. Adsorption isotherm fitting results showed that adsorption behavior of the Fe(Ⅱ) ion on the modified activated carbon and vermiculite materials conformed to the Langmuir adsorption. The adsorption capacity was improved with a large adsorption coefficient, attributing to the strong complexing action of the metal ions with EDDS modified onto the surface of the activated carbon and vermiculite.
- vermiculite /
- activated carbon /
- modified /
- Fe(Ⅱ) /
- absorption

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Citation:

SHI Haibo, ZHU Jianzhong, CHEN Shenglu, JI Dongliang, CAO Yang, CHEN Guanhuan. Biodegradable chelant EDDS([S,S]-ethylenediamine disuccinic acid) modified vermiculite and activated carbon and their adsorption performance for Fe(Ⅱ)[J]. Environmental Chemistry, 2014, 33(6): 949-955. doi: 10.7524/j.issn.0254-6108.2014.06.011

生物可降解络合剂[S,S]-乙二胺二琥珀酸改性蛭石和活性炭及其对Fe（Ⅱ）的吸附性能

1. 河海大学浅水湖泊综合治理与资源开发教育部重点实验室及河海大学环境学院, 南京, 210098

收稿日期: 2013-09-23

基金项目:

教育部留学人员回国启动基金（1061-51200312）；中央高校（河海大学）基本科研业务费专项资金（B11020157）；江苏水利科技项目基金（1061-51146012）；江苏科技项目基金（1061-51334512）资助.

关键词:

蛭石 /
活性炭 /
改性 /
Fe（Ⅱ） /
吸附

摘要: 提出将Fe（Ⅱ）离子吸附络合稳定于活性炭、蛭石表面，再与H2O2组成新的非均相Fenton反应体系，通过加热、煮沸、干燥等简单的物理方法成功地将螯合剂EDDS（[S，S]-乙二胺二琥珀酸）修饰到蛭石和活性炭表面，对蛭石和活性炭进行改性.主要研究了包括pH、温度、初始浓度、反应时间对材料吸附性能的影响.研究表明，在相同条件下EDDS改性可以提高活性炭和蛭石对Fe（Ⅱ）离子的吸附容量，溶液pH、温度、初始浓度对吸附有较大影响.吸附等温线的拟合结果表明，Fe（Ⅱ）离子在 EDDS 修饰的活性炭和蛭石上吸附行为符合 Langmuir 吸附，其饱和吸附量都有所提高，且具有较大的吸附系数，这是由于修饰在活性炭和蛭石表面的 EDDS 和金属离子形成强烈的络合作用所致.

English Abstract

Biodegradable chelant EDDS([S,S]-ethylenediamine disuccinic acid) modified vermiculite and activated carbon and their adsorption performance for Fe(Ⅱ)

1. Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China

Received Date: 2013-09-23

Fund Project:

Keywords:

Abstract: In this paper, activated carbon and vermiculite were used to adsorb Fe (Ⅱ) ions, to form a heterogeneous Fenton reaction system with H2O2. Modified vermiculite and activated carbon were prepared by coating chelating agent EDDS onto their surface with the simple physical methods like heating, boiling, drying. In the study, the influence of pH, temperature, initial concentration and reaction time on the adsorption performance of the material for Fe(Ⅱ) were investigated. The results showed that EDDS improved Fe(Ⅱ) ion adsorption capacity of both activated carbon and vermiculite. And pH, temperature and the initial Fe(Ⅱ) concentration had a great influence on the adsorption capacity. Adsorption isotherm fitting results showed that adsorption behavior of the Fe(Ⅱ) ion on the modified activated carbon and vermiculite materials conformed to the Langmuir adsorption. The adsorption capacity was improved with a large adsorption coefficient, attributing to the strong complexing action of the metal ions with EDDS modified onto the surface of the activated carbon and vermiculite.

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生物可降解络合剂[S,S]-乙二胺二琥珀酸改性蛭石和活性炭及其对Fe（Ⅱ）的吸附性能

Biodegradable chelant EDDS([S,S]-ethylenediamine disuccinic acid) modified vermiculite and activated carbon and their adsorption performance for Fe(Ⅱ)

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生物可降解络合剂[S,S]-乙二胺二琥珀酸改性蛭石和活性炭及其对Fe（Ⅱ）的吸附性能

English Abstract

Biodegradable chelant EDDS([S,S]-ethylenediamine disuccinic acid) modified vermiculite and activated carbon and their adsorption performance for Fe(Ⅱ)

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