DocumentCode
2009808
Title
Notice of Retraction
Surface properties of a modified bamboo-based activated carbon and study on its absorption mechanism of Cr(VI)
Author
Gong Ying ; Wu Jun-Ming ; Huang Zhao-Yi
Author_Institution
Coll. of Environ. Sci. & Eng., Hohai Univ., Nanjing, China
Volume
4
fYear
2010
fDate
17-18 July 2010
Firstpage
17
Lastpage
20
Abstract
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
In order to improve the effect of bamboo-based activated carbons (BAC)on chromium(VI) reduction, this paper used nitric acid to modify BAC, and investigated the absorption mechanism of Cr(VI) by modified BAC. In this experiment, Bamboo-based activated carbon was modified by nitric acid at four different concentrations. After modification, the surface properties were determined by SEM, QUANTACHROME and FTIR, then the excellent one was selected and the absorption experiment was carried out to analyze the mechanism of absorption of Cr(VI). The results are threefold. First, the microporous structures and surface chemical properties of BACs modified by surface acidic oxides change differently, while the excellent one was modified by nitric acid at 3.0mol/L concentration; second, the hydration of modified BACs and Cr(VI) depend on the values of pH in aqueous solutions; third, the reaction between the chromate species and the functional groups at the surface of BACs depends on hydrogen bonds.
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
In order to improve the effect of bamboo-based activated carbons (BAC)on chromium(VI) reduction, this paper used nitric acid to modify BAC, and investigated the absorption mechanism of Cr(VI) by modified BAC. In this experiment, Bamboo-based activated carbon was modified by nitric acid at four different concentrations. After modification, the surface properties were determined by SEM, QUANTACHROME and FTIR, then the excellent one was selected and the absorption experiment was carried out to analyze the mechanism of absorption of Cr(VI). The results are threefold. First, the microporous structures and surface chemical properties of BACs modified by surface acidic oxides change differently, while the excellent one was modified by nitric acid at 3.0mol/L concentration; second, the hydration of modified BACs and Cr(VI) depend on the values of pH in aqueous solutions; third, the reaction between the chromate species and the functional groups at the surface of BACs depends on hydrogen bonds.
Keywords
Fourier transform spectra; absorption; activated carbon; chemical technology; chromium compounds; hydrogen bonds; hydrogen compounds; infrared spectra; scanning electron microscopy; solvation; BAC; FTIR; QUANTACHROME; SEM; absorption experiment; absorption mechanism; bamboo-based activated carbon; chromate species; chromium VI reduction; functional groups; hydration; hydrogen bonds; microporous structures; nitric acid; surface acidic oxides; surface chemical property; surface property; absorption mechanism; bamboo-based activated carbon; chromium(VI); modification;
fLanguage
English
Publisher
ieee
Conference_Titel
Environmental Science and Information Application Technology (ESIAT), 2010 International Conference on
Conference_Location
Wuhan
Print_ISBN
978-1-4244-7387-8
Type
conf
DOI
10.1109/ESIAT.2010.5568409
Filename
5568409
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