Synthesis of a three-dimensional network sodium alginate-poly(acrylic acid)/attapulgite hydrogel with good mechanic property and reusability for efficient adsorption of Cu2+ and Pb2+
Mao, XY (Mao, Xinyou); Wang, L (Wang, Lan); Gu, SQ (Gu, Shiqing); Duan, YY (Duan, Yanyan); Zhu, YQ (Zhu, Yunqing); Wang, CY (Wang, Chuanyi); Lichtfouse, E (Lichtfouse, Eric); Wang, L
2018
发表期刊ENVIRONMENTAL CHEMISTRY LETTERS
卷号16期号:2
摘要

Water pollution caused by heavy metals has dramatically impacted ecosystems in recent years. For instance, 45.4% of lakes in China are in the category of moderate to high risk of toxic metal pollution, due to excessive mining. There is, therefore, a need for efficient techniques of metal decontamination. Hydrogels are gaining interest as heavy metal adsorbents because of their easy separation, but hydrogel applications are limited due to their poor mechanical property. Here we solve this problem by introducing natural attapulgite into the sodium alginate-poly(acrylic acid) semi-interpenetrating polymer network of the hydrogel. Results show that the compressive stress of the hydrogel with 10% attapulgite, of 1.230 Mpa, was 4.1 times higher than that of pure hydrogel, of 0.299 MPa. The adsorption capacity of hydrogel with 10% attapulgite was high, of 272.8 mg/g for Cu2+ and 391.7 mg/g for Pb2+. Even after five cycles of adsorption, the hydrogel with 10% attapulgite still adsorbs 261.7 mg/g Cu2+ and 368.1 mg/g Pb2+. Our findings thus reveal that network-structured sodium alginate-poly(acrylic acid)/attapulgite hydrogel holds great potential as an efficient and recyclable adsorbent for heavy metal removal.

关键词Hydrogel Attapulgite Pb2++ Cu2++ Adsorption Alginate
DOI10.1007/s10311-018-0708-9
收录类别SCI
WOS记录号WOS:000432519600026
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文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/5398
专题中国科学院特殊环境功能材料与器件重点试验室
通讯作者Wang, L
作者单位1.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Shaanxi Univ Sci & Technol, Xian 710021, Shaanxi, Peoples R China
4.Aix Marseille Univ, Coll France, CNRS, INRA,IRD,Europole Mediterraneen Arbois,Cerege, F-13545 Aix En Provence, France
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Mao, XY ,Wang, L ,Gu, SQ ,et al. Synthesis of a three-dimensional network sodium alginate-poly(acrylic acid)/attapulgite hydrogel with good mechanic property and reusability for efficient adsorption of Cu2+ and Pb2+[J]. ENVIRONMENTAL CHEMISTRY LETTERS,2018,16(2).
APA Mao, XY .,Wang, L .,Gu, SQ .,Duan, YY .,Zhu, YQ .,...&Wang, L.(2018).Synthesis of a three-dimensional network sodium alginate-poly(acrylic acid)/attapulgite hydrogel with good mechanic property and reusability for efficient adsorption of Cu2+ and Pb2+.ENVIRONMENTAL CHEMISTRY LETTERS,16(2).
MLA Mao, XY ,et al."Synthesis of a three-dimensional network sodium alginate-poly(acrylic acid)/attapulgite hydrogel with good mechanic property and reusability for efficient adsorption of Cu2+ and Pb2+".ENVIRONMENTAL CHEMISTRY LETTERS 16.2(2018).
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