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Exploring the Sorption Mechanism of Ni(II) on Illite: Batch Sorption, Modelling, EXAFS and Extraction Investigations

文献类型：期刊论文

作者Zhao, Xiaolan1,6; Qiang, Shirong2,3; Wu, Hanyu1; Yang, Yunbo1,6; Shao, Dadong4; Fang, Linchuan5; Liang, Jianjun1; Li, Ping1; Fan, Qiaohui1
刊名SCIENTIFIC REPORTS
出版日期2017-08-17
卷号7
ISSN号2045-2322
DOI10.1038/s41598-017-09188-z
文献子类Article
英文摘要The sorption mechanism of nickel (Ni) at the illite/water interface was investigated using batch, sorption modelling, extended X-ray absorption fine structure (EXAFS), and extraction approaches. The results showed that Ni(II) sorption on illite was strongly dependent on pH, contact time, temperature, and initial Ni(II) concentration. At a low initial Ni(II) concentration, the ion exchange species of equivalent to X2Ni degrees and the inner-sphere complexes including equivalent to (SONi+)-O-s, equivalent to (SONi+)-O-w and equivalent to (SONiOH)-O-w degrees species are observed on the sorption edges of Ni(II) on illite. As the initial Ni(II) concentration increased to 1.7 x 10(-3) mol/L, precipitates including surface-induced precipitation of s-Ni(OH)(2) and amorphous Ni(OH)(2) became more significant, especially under neutral to alkaline conditions. EXAFS analysis confirmed that Ni-Al layered double hydroxide (LDH) can gradually form with an increase in the contact time. At pH 7.0, alpha-Ni(OH)(2) was produced in the initial stage and then transformed to the more stable form of Ni-Al LDH with increasing contact time because of the increased Al3+ dissolution. With an increase in temperatures, alpha-Ni(OH)(2) phase on illite transformed to Ni-Al LDH phase, indicating a lower thermodynamic stability compared to Ni-Al LDH phase. These results are important to understand the geochemical behaviors to effectively remediate soil contaminated with Ni(II).
WOS关键词NA-MONTMORILLONITE ; WATER SUSPENSIONS ; AQUEOUS-SOLUTION ; FE(II) SORPTION ; IONIC-STRENGTH ; ZN SORPTION ; NI ; NICKEL ; AL ; SURFACE
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000407863600006
出版者NATURE PUBLISHING GROUP
资助机构Natural National Science Foundation of China(41573128 ; Key Laboratory Project of Gansu Province(1309RTSA041) ; Chinese Academy of Sciences in Lanzhou Center for Oil and Gas Resources, Institute of Geology and Geophysics, CAS ; 21601179 ; 21601169 ; 21647009) ; Natural National Science Foundation of China(41573128 ; Key Laboratory Project of Gansu Province(1309RTSA041) ; Chinese Academy of Sciences in Lanzhou Center for Oil and Gas Resources, Institute of Geology and Geophysics, CAS ; 21601179 ; 21601169 ; 21647009) ; Natural National Science Foundation of China(41573128 ; Key Laboratory Project of Gansu Province(1309RTSA041) ; Chinese Academy of Sciences in Lanzhou Center for Oil and Gas Resources, Institute of Geology and Geophysics, CAS ; 21601179 ; 21601169 ; 21647009) ; Natural National Science Foundation of China(41573128 ; Key Laboratory Project of Gansu Province(1309RTSA041) ; Chinese Academy of Sciences in Lanzhou Center for Oil and Gas Resources, Institute of Geology and Geophysics, CAS ; 21601179 ; 21601169 ; 21647009)
源URL[http://ir.iggcas.ac.cn/handle/132A11/61829]  
专题地质与地球物理研究所_兰州油气中心
通讯作者Fan, Qiaohui
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Lanzhou 730000, Gansu, Peoples R China
2.Lanzhou Univ, Key Lab Preclin Study New Drugs Gansu Prov, 199 Donggang West Rd, Lanzhou 73000, Gansu, Peoples R China
3.Lanzhou Univ, Sch Basic Med Sci, Inst Physiol, 199 Donggang West Rd, Lanzhou 73000, Gansu, Peoples R China
4.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China
5.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Xiaolan,Qiang, Shirong,Wu, Hanyu,et al. Exploring the Sorption Mechanism of Ni(II) on Illite: Batch Sorption, Modelling, EXAFS and Extraction Investigations[J]. SCIENTIFIC REPORTS,2017,7.
APA Zhao, Xiaolan.,Qiang, Shirong.,Wu, Hanyu.,Yang, Yunbo.,Shao, Dadong.,...&Fan, Qiaohui.(2017).Exploring the Sorption Mechanism of Ni(II) on Illite: Batch Sorption, Modelling, EXAFS and Extraction Investigations.SCIENTIFIC REPORTS,7.
MLA Zhao, Xiaolan,et al."Exploring the Sorption Mechanism of Ni(II) on Illite: Batch Sorption, Modelling, EXAFS and Extraction Investigations".SCIENTIFIC REPORTS 7(2017).

入库方式： OAI收割

来源：地质与地球物理研究所

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