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Tailoring electronic configurations in adsorptive sites for the enhancement of As(V) removal from groundwater
Tian, Kaixun1; Xiao, Jing1; Shen, Jian1; Zhao, He2
2020-05-01
Source PublicationWATER SCIENCE AND TECHNOLOGY-WATER SUPPLY
ISSN1606-9749
Volume20Issue:3Pages:828-836
AbstractIn the past few decades, heavy metal pollution, such as As(V), has become an important issue for aqueous environment safety. For reasons of practical feasibility and cost-effectiveness, adsorption has been widely used in the water treatment and reuse community, with rapid development of adsorbents. However, the precise control of the electronic configuration of the adsorbents' sites to enhance adsorption performance is largely unexplored. In this study, to demonstrate the effect of electronic configuration on adsorption performance, we synthesized granular activated carbon (GAC) supported Fe-based hydroxides adsorbents by varying the valence state in transition metals. Furthermore, the adsorbents are characterized by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM) to identify surface structure and morphological properties. Adsorptive performance studies show that the adsorption capacity and arsenic removal efficiency of Fe(II)-GAC are twice those of Fe(III)-GAC, as a matter of charge transfer between adsorbents and cationic pollution (such as Fe-O and As species). Finally, PO43- was selected as a control sample to confirm the rationality of the removal mechanism. Collectively, fine-tuning of the electronic configuration from charge transfer will not only benefit heavy metal removal channels, but also supply fundamental information for adsorbents design for organics removal.
Keywordadsorption arsenic (V) removal electronic configurations iron oxide hydrate
DOI10.2166/ws.2019.197
Language英语
WOS KeywordARSENIC REMOVAL ; AQUEOUS-SOLUTION ; FERRIC-OXIDE ; WATER ; FE ; PB
Funding ProjectNational Natural Science Foundation of China[21707023] ; New Faculty Start-Up Funding from Xiangtan University[18QDZ16] ; Provincial Key Research and Development Plan of Hunan Province[2018SK2034] ; Provincial Key Research and Development Plan of Hunan Province[2018SK2018]
WOS Research AreaEngineering ; Environmental Sciences & Ecology ; Water Resources
WOS SubjectEngineering, Environmental ; Environmental Sciences ; Water Resources
Funding OrganizationNational Natural Science Foundation of China ; New Faculty Start-Up Funding from Xiangtan University ; Provincial Key Research and Development Plan of Hunan Province
WOS IDWOS:000537271000007
PublisherIWA PUBLISHING
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/40996
Collection中国科学院过程工程研究所
Corresponding AuthorShen, Jian
Affiliation1.Xiangtan Univ, Dept Environm & Resources, Hunan Engn Lab Complex Heavy Met Wastewater Purif, Xiangtan 411105, Peoples R China
2.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Div Environm Technol & Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Tian, Kaixun,Xiao, Jing,Shen, Jian,et al. Tailoring electronic configurations in adsorptive sites for the enhancement of As(V) removal from groundwater[J]. WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY,2020,20(3):828-836.
APA Tian, Kaixun,Xiao, Jing,Shen, Jian,&Zhao, He.(2020).Tailoring electronic configurations in adsorptive sites for the enhancement of As(V) removal from groundwater.WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY,20(3),828-836.
MLA Tian, Kaixun,et al."Tailoring electronic configurations in adsorptive sites for the enhancement of As(V) removal from groundwater".WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY 20.3(2020):828-836.
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