The enhancement roles of layered double hydroxide on the reductive immobilization of selenate by nanoscale zero valent iron: Macroscopic and microscopic approaches

doi:10.1016/j.chemosphere.2017.05.179

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 兰州油气中心

	The enhancement roles of layered double hydroxide on the reductive immobilization of selenate by nanoscale zero valent iron: Macroscopic and microscopic approaches
	Hu, Baowei 1; Ye, Feng 1; Jin, Chengan 1; Ma, Xiangxian 3; Huang, Chengcai 1; Sheng, Guodong 1,2,5; Ma, Jingyuan 4; Wang, Xiangke 1,2,6; Huang, Yuying 4
刊名	CHEMOSPHERE
	2017-10-01
卷号	184 页码:408-416
关键词	Layered double hydroxide Nanoscale zero-valent iron Enhancement roles Se(VI) immobilization X-ray absorption fine structure
ISSN号	0045-6535
DOI	10.1016/j.chemosphere.2017.05.179
文献子类	Article
英文摘要	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.
WOS关键词	SUPPORTED ZEROVALENT IRON ; WEAK MAGNETIC-FIELD ; AQUEOUS-SOLUTION ; HEXAVALENT CHROMIUM ; SELENIUM REDUCTION ; PLASMA TECHNIQUE ; CR(VI) REMOVAL ; GRANULAR IRON ; WASTE-WATER ; SEQUESTRATION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000407525500047
资助机构	Natural Science Foundation of Zhejiang Province(LY15B070001) ; National Natural Science Foundation of China(21577093 ; 21207092) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; National Natural Science Foundation of China(21577093 ; 21207092) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; National Natural Science Foundation of China(21577093 ; 21207092) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; National Natural Science Foundation of China(21577093 ; 21207092)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/61894]
专题	地质与地球物理研究所_兰州油气中心
通讯作者	Sheng, Guodong
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
推荐引用方式 GB/T 7714	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.