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)
2018
Source PublicationENVIRONMENTAL CHEMISTRY LETTERS
ISSN1610-3653
Volume16Issue:2Pages:653-658
Abstract

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.

KeywordHydrogel Attapulgite Pb2++++ Cu2++++ Adsorption Alginate
DOI10.1007/s10311-018-0708-9
Indexed BySCI
WOS IDWOS:000432519600026
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/5398
Collection中国科学院特殊环境功能材料与器件重点试验室
Corresponding AuthorWang, L (Wang, Lan)
Affiliation1.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
Recommended Citation
GB/T 7714
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):653-658.
APA Mao, XY .,Wang, L .,Gu, SQ .,Duan, YY .,Zhu, YQ .,...&Lichtfouse, E .(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),653-658.
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):653-658.
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