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The enhancement roles of layered double hydroxide on the reductive immobilization of selenate by nanoscale zero valent iron: Macroscopic and microscopic approaches
Hu, Baowei1; Ye, Feng1; Jin, Chengan1; Ma, Xiangxian3; Huang, Chengcai1; Sheng, Guodong1,2,5; Ma, Jingyuan4; Wang, Xiangke1,2,6; Huang, Yuying4
2017-10-01
发表期刊CHEMOSPHERE
卷号184页码:408-416
摘要Herein, we utilized nanoscale zero-valent iron loaded on layered double hydroxide (NZVI/LDH) to immobilize Se(VI) and evaluated the enhancement role of LDH in the NZVI reaction system. The structural characterization indicated that LDH could stabilize and disperse NZVI as well as prevent NZVI from oxidation, thereby increasing iron reactivity. Batch experiments displayed that, compared with those by NZVI, both extent and rate of Se(VI) immobilized by NZVI/LDH significantly increased, owing to the prominent synergistic effect ascribing from adsorption and reduction. Kinetics studies under a series of conditions showed that Se(VI) reaction could be well described by pseudo first-order model. The performance of Se(VI) immobilization was inhibited to a considerable extent by most of co-existing ions, Nevertheless, the presence of Cu2+ improved performance of NZVI/LDH due to its role as a catalyst or medium of charge transfer during reduction. CANES revealed that LDH acted as a promoter for complete reduction of Se(VI) into Se(0)/Se(-II) over a wide pH range, whereas EXAFS suggested that LDH acted as a scavenger for insoluble products, making more reactive sites exposure to Se(VI) for reduction. These results suggested that NZVI/LDH as a promising candidate exhibited potential application in remediation of wastewaters containing Se(VI). (C) 2017 Elsevier Ltd. All rights reserved.
文章类型Article
关键词Layered Double Hydroxide Nanoscale Zero-valent Iron Enhancement Roles Se(Vi) Immobilization X-ray Absorption Fine Structure
WOS标题词Science & Technology ; Life Sciences & Biomedicine
资助者Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; 21207092) ; 21207092) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; 21207092) ; 21207092)
DOI10.1016/j.chemosphere.2017.05.179
关键词[WOS]SUPPORTED ZEROVALENT IRON ; WEAK MAGNETIC-FIELD ; AQUEOUS-SOLUTION ; HEXAVALENT CHROMIUM ; SELENIUM REDUCTION ; PLASMA TECHNIQUE ; CR(VI) REMOVAL ; GRANULAR IRON ; WASTE-WATER ; SEQUESTRATION
收录类别SCI
语种英语
资助者Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; 21207092) ; 21207092) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; 21207092) ; 21207092)
WOS研究方向Environmental Sciences & Ecology
WOS类目Environmental Sciences
WOS记录号WOS:000407525500047
引用统计
文献类型期刊论文
条目标识符http://ir.hfcas.ac.cn:8080/handle/334002/33635
专题中科院等离子体物理研究所
作者单位1.Shaoxing Univ, Coll Life Sci, Coll Chem & Chem Engn, Shaoxing 312000, Zhejiang, Peoples R China
2.North China Elect Power Univ, Sch Chem & Environm, Beijing 102206, Peoples R China
3.Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China
4.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China
5.Chinese Acad Sci, Inst Plasma Phys, POB 1126, Hefei 230031, Anhui, Peoples R China
6.King Abdulaziz Univ, NAAM Res Grp, Fac Sci, Jeddah 21589, Saudi Arabia
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Hu, Baowei,Ye, Feng,Jin, Chengan,et al. The enhancement roles of layered double hydroxide on the reductive immobilization of selenate by nanoscale zero valent iron: Macroscopic and microscopic approaches[J]. CHEMOSPHERE,2017,184:408-416.
APA Hu, Baowei.,Ye, Feng.,Jin, Chengan.,Ma, Xiangxian.,Huang, Chengcai.,...&Huang, Yuying.(2017).The enhancement roles of layered double hydroxide on the reductive immobilization of selenate by nanoscale zero valent iron: Macroscopic and microscopic approaches.CHEMOSPHERE,184,408-416.
MLA Hu, Baowei,et al."The enhancement roles of layered double hydroxide on the reductive immobilization of selenate by nanoscale zero valent iron: Macroscopic and microscopic approaches".CHEMOSPHERE 184(2017):408-416.
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