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Screening hydroxyapatite for cadmium and lead immobilization in aqueous solution and contaminated soil: The role of surface area

文献类型：期刊论文

作者Li, Hongying1; Guo, Xisheng1; Ye, Xinxin1,2
刊名JOURNAL OF ENVIRONMENTAL SCIENCES
出版日期2017-02-01
卷号52期号:无页码:141-150
关键词Hydroxyapatite Cadmium Lead Remediation Structure And Morphology
DOI10.1016/j.jes.2016.04.005
文献子类Article
英文摘要Hydroxyapatite (HAP) has been widely used to immobilize many cationic metals in water and soils. The specific reason why an increase in the surface area of HAP enhances cadmium (Cd) uptake, but has no effect on lead (Pb) uptake, is not clear. The aim of this study was to determine the factors causing the differences in sorption behavior between Cd and Pb by evaluating HAPs with different surface areas. We synthesized HAPs with two different surface areas, which were characterized by X-ray diffraction, N-2 adsorption, and scanning electron microscopy, and then evaluated them as sorbents for Cd and Pb removal by testing in single and binary systems. The sorption capacity of large surface area HAP (1.85 mmol/g) for Cd in the single-metal system was higher than that of small surface area HAP (0.64 mmol/g), but there were no differences between single-and binary-metal solutions containing Pb. After the Cd experiments, the HAP retained a stable structure and intact morphology, which promotes the accessibility of reactive sites for Cd. However, a newly formed precipitate covered the surface and blocked the channels in the presence of Pb, which reduced the number of potential adsorption sites on HAP for Cd and Pb. Remediation experiments using Cd-and Pb-contaminated soil produced similar results to the solution tests. These results indicate that alterations of the structure and morphology during the reaction is an important factor influencing metal sorption to HAP. (C) 2016 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
WOS关键词SYNTHETIC HYDROXYAPATITE ; SEQUENTIAL EXTRACTION ; PADDY SOILS ; SORPTION ; IONS ; REMOVAL ; METAL ; ADSORPTION ; SEDIMENTS ; SINGLE
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000394947500016
资助机构National Natural Science Foundation of China(41301347) ; National Natural Science Foundation of China(41301347) ; National Natural Science Foundation of China(41301347) ; National Natural Science Foundation of China(41301347) ; Anhui Provincial Natural Science Foundation(1408085MKL61) ; Anhui Provincial Natural Science Foundation(1408085MKL61) ; Anhui Provincial Natural Science Foundation(1408085MKL61) ; Anhui Provincial Natural Science Foundation(1408085MKL61) ; Scientific and Technical Key Research Program of Auhui(1501031088) ; Scientific and Technical Key Research Program of Auhui(1501031088) ; Scientific and Technical Key Research Program of Auhui(1501031088) ; Scientific and Technical Key Research Program of Auhui(1501031088) ; Natural Science Foundation of Anhui Academy of Agricultural Sciences(16A1029) ; Natural Science Foundation of Anhui Academy of Agricultural Sciences(16A1029) ; Natural Science Foundation of Anhui Academy of Agricultural Sciences(16A1029) ; Natural Science Foundation of Anhui Academy of Agricultural Sciences(16A1029) ; National Natural Science Foundation of China(41301347) ; National Natural Science Foundation of China(41301347) ; National Natural Science Foundation of China(41301347) ; National Natural Science Foundation of China(41301347) ; Anhui Provincial Natural Science Foundation(1408085MKL61) ; Anhui Provincial Natural Science Foundation(1408085MKL61) ; Anhui Provincial Natural Science Foundation(1408085MKL61) ; Anhui Provincial Natural Science Foundation(1408085MKL61) ; Scientific and Technical Key Research Program of Auhui(1501031088) ; Scientific and Technical Key Research Program of Auhui(1501031088) ; Scientific and Technical Key Research Program of Auhui(1501031088) ; Scientific and Technical Key Research Program of Auhui(1501031088) ; Natural Science Foundation of Anhui Academy of Agricultural Sciences(16A1029) ; Natural Science Foundation of Anhui Academy of Agricultural Sciences(16A1029) ; Natural Science Foundation of Anhui Academy of Agricultural Sciences(16A1029) ; Natural Science Foundation of Anhui Academy of Agricultural Sciences(16A1029)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/31766]  
专题合肥物质科学研究院_中科院固体物理研究所
作者单位1.Anhui Acad Agr Sci, Inst Soil & Fertilizer, Hefei 230031, Peoples R China
2.Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, Key Lab Mat Phys,Ctr Environm & Energy Nanomat, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Li, Hongying,Guo, Xisheng,Ye, Xinxin. Screening hydroxyapatite for cadmium and lead immobilization in aqueous solution and contaminated soil: The role of surface area[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2017,52(无):141-150.
APA Li, Hongying,Guo, Xisheng,&Ye, Xinxin.(2017).Screening hydroxyapatite for cadmium and lead immobilization in aqueous solution and contaminated soil: The role of surface area.JOURNAL OF ENVIRONMENTAL SCIENCES,52(无),141-150.
MLA Li, Hongying,et al."Screening hydroxyapatite for cadmium and lead immobilization in aqueous solution and contaminated soil: The role of surface area".JOURNAL OF ENVIRONMENTAL SCIENCES 52.无(2017):141-150.

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来源：合肥物质科学研究院

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