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Effect of acidic surface functional groups on Cr(VI) removal by activated carbon from aqueous solution
Zhou Hualei2; Chen Yunfa1; Chen, YF
2010-06-01
Source PublicationRARE METALS
ISSN1001-0521
Volume29Issue:3Pages:333-338
AbstractThe activated carbon with high surface area was prepared by KOH activation. It was further modified by H(2)SO(4) and HNO(3) to introduce more surface functional groups. The pore structure of the activated carbons before and after modification was analyzed based on the nitrogen adsorption isotherms. The morphology of those activated carbons was characterized using scanning electronic microscopy (SEM). The surface functional groups were determined by Fourier transform infrared spectroscopy (FTIR). The quantity of those groups was measured by the Boehm titration method. Cr(VI) removal by the activated carbons from aqueous solution was investigated at different pH values. The results show that compared with H(2)SO(4), HNO(3) destructs the original pore of the activated carbon more seriously and induces more acidic surface functional groups on the activated carbon. The pH value of the solution plays a key role in the Cr(VI) removal. The ability of reducing Cr(VI) to Cr(III) by the activated carbons is relative to the acidic surface functional groups. At higher pH values, the Cr(VI) removal ratio is improved by increasing the acidic surface functional groups of the activated carbons. At lower pH values, however, the acidic surface functional groups almost have no effect on the Cr(VI) removal by the activated carbon from aqueous solution.
KeywordActivated Carbon Surface Functional Groups Removal Modification Chromium(Vi)
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1007/s12598-010-0059-6
Indexed BySCI
Language英语
WOS KeywordRED MUD ; ADSORPTION ; CHROMIUM ; KINETICS
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000278120700020
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6146
Collection多相复杂系统国家重点实验室
Corresponding AuthorChen, YF
Affiliation1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100080, Peoples R China
2.Univ Sci & Technol Beijing, Sch Appl Sci, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Zhou Hualei,Chen Yunfa,Chen, YF. Effect of acidic surface functional groups on Cr(VI) removal by activated carbon from aqueous solution[J]. RARE METALS,2010,29(3):333-338.
APA Zhou Hualei,Chen Yunfa,&Chen, YF.(2010).Effect of acidic surface functional groups on Cr(VI) removal by activated carbon from aqueous solution.RARE METALS,29(3),333-338.
MLA Zhou Hualei,et al."Effect of acidic surface functional groups on Cr(VI) removal by activated carbon from aqueous solution".RARE METALS 29.3(2010):333-338.
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