Amino-functionalized core-shell magnetic mesoporous composite microspheres for Pb(II) and Cd(II) removal

被引：70

作者：

Tang, Yulin ^{[1
]}

Liang, Song ^{[1
]}

Wang, Juntao ^{[2
]}

Yu, Shuili ^{[1
]}

Wang, Yilong ^{[2
]}

机构：

[1] Tongji Univ, State Key Lab Pollut Control & Resource Reuse, Coll Environm Sci & Engn, Shanghai 200092, Peoples R China

[2] Tongji Univ, Inst Biomed Engn & Nano Sci, Shanghai 200092, Peoples R China

来源：

JOURNAL OF ENVIRONMENTAL SCIENCES | 2013年 / 25卷 / 04期

基金：

中国国家自然科学基金; “十二五”国家科技支撑计划重点项目”;

关键词：

heavy metals; adsorption; magnetic mesoporous microspheres; amino-functionalization; HEAVY-METAL IONS; AQUEOUS-SOLUTION; ADSORPTION; SEPARATION; ADSORBENTS; POLYMER; CU(II); CR(VI); CU2+; CD2+;

D O I：

10.1016/S1001-0742(12)60141-7

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Amino-functionalized Fe3O4@mesoporous SiO2 core-shell composite microspheres NH2-MS in created in multiple synthesis steps have been investigated for Pb(II) and Cd(II) adsorption. The microspheres were characterized by transmission electron microscope (TEM), scanning electron microscope (SEM), N-2 adsorption-desorption, zeta potential measurements and vibrating sample magnetometer. Batch adsorption tests indicated that NH2-MS exhibited higher adsorption affinity toward Pb(II) and Cd(II) than MS did. The Langmuir model could fit the adsorption isotherm very well with maximum adsorption capacity of 128.21 and 51.81 mg/g for Pb(II) and Cd(II), respectively, implying that adsorption processes involved monolayer adsorption. Pb(II) and Cd(II) adsorption could be well described by the pseudo second-order kinetics model, and was found to be strongly dependent on pH and humic acid. The Pb(II)- and Cd(II)-loaded microspheres were effectively desorbed using 0.01 mol/L HCl or EDTA solution. NH2-MS have promise for use as adsorbents in the removal of Pb(II) and Cd(II) in wastewater treatment processes.

引用

页码：830 / 837

页数：8

共 27 条

[11] Effective heavy metal removal from aqueous systems by thiol functionalized magnetic mesoporous silica [J].

Li, Guoliang ;

Zhao, Zongshan ;

Liu, Jiyan ;

Jiang, Guibin .

JOURNAL OF HAZARDOUS MATERIALS, 2011, 192 (01) :277-283

[12] Separation and accumulation of Cu(II), Zn(II) and Cr(VI) from aqueous solution by magnetic chitosan modified with diethylenetriamine [J].

Li, Haibo ;

Bi, Shaodan ;

Liu, Long ;

Dong, Weifang ;

Wang, Xin .

DESALINATION, 2011, 278 (1-3) :397-404

[13] Self-templated synthesis of bifunctional Fe3O4@MgSiO3 magnetic sub-microspheres for toxic metal ions removal [J].

Ou, Qianqian ;

Zhou, Lei ;

Zhao, Shengguo ;

Geng, Huijuan ;

Hao, Junjie ;

Xu, Yinyin ;

Chen, Hongli ;

Chen, Xingguo .

CHEMICAL ENGINEERING JOURNAL, 2012, 180 :121-127

[14] Utilization of magnetic hydrogels in the separation of toxic metal ions from aqueous environments [J].

Ozay, Ozgur ;

Ekici, Sema ;

Baran, Yakup ;

Kubilay, Senol ;

Aktas, Nahit ;

Sahiner, Nurettin .

DESALINATION, 2010, 260 (1-3) :57-64

[15] Removal of toxic metal ions with magnetic hydrogels [J].

Ozay, Ozgur ;

Ekici, Sema ;

Baran, Yakup ;

Aktas, Nahit ;

Sahiner, Nurettin .

WATER RESEARCH, 2009, 43 (17) :4403-4411

[16] PEI-grafted magnetic porous powder for highly effective adsorption of heavy metal ions [J].

Pang, Ya ;

Zeng, Guangming ;

Tang, Lin ;

Zhang, Yi ;

Liu, Yuanyuan ;

Lei, Xiaoxia ;

Li, Zhen ;

Zhang, Jiachao ;

Xie, Gengxin .

DESALINATION, 2011, 281 :278-284

[17] Functionalized magnetic core-shell Fe3O4@SiO2 nanoparticles as selectivity-enhanced chemosensor for Hg(II) [J].

Peng, Xiaohong ;

Wang, Yujiao ;

Tang, Xiaoliang ;

Liu, Weisheng .

DYES AND PIGMENTS, 2011, 91 (01) :26-32

[18] Preparation of amino-functionalized silica for copper removal from an aqueous solution [J].

Quang, Dang Viet ;

Kim, Jong Kil ;

Sarawade, Pradip B. ;

Tuan, Dang Huu ;

Kim, Hee Taik .

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, 2012, 18 (01) :83-87

[19] Synthesis of Fe3O4@poly(methylmethacrylate-co-divinylbenzene) magnetic porous microspheres and their application in the separation of phenol from aqueous solutions [J].

Tai, Yulei ;

Wang, Li ;

Gao, Jingmin ;

Amer, Wael A. ;

Ding, Wenbing ;

Yu, Haojie .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2011, 360 (02) :731-738

[20] Enhanced adsorption of humic acid on amine functionalized magnetic mesoporous composite microspheres [J].

Tang, Yulin ;

Liang, Song ;

Yu, Shuili ;

Gao, Naiyun ;

Zhang, Jun ;

Guo, Haicheng ;

Wang, Yilong .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2012, 406 :61-67

← 1 2 3 →