Preparation of Modified Corncobs by Citric Acid and Study on the Adsorption of Cr (VI)

Qing Shan Pan; Wei Liu; Mei Gui Ma; He Ping Yan; Bo Zhou; Du Shu Huang; Bao Sen Wang; Na Wu; Ling Shi; Shi Juan Xu

doi:10.4028/www.scientific.net/AMR.726-731.2260

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 726-731Preparation of Modified Corncobs by Citric Acid...

Preparation of Modified Corncobs by Citric Acid and Study on the Adsorption of Cr (VI)

Abstract:

The modified corncobs was prepared by using citric acid. Conditions of preparation, the effects of pH, initial concentrations of Cr (VI) and adsorption time to adsorption of Cr (VI) was studied. Results show that when citric acid concentration at 3molL^-1, heating treatment temperature at 160°C, the treatment time at 2h, the modified corncobs had a high adsorption of Cr (VI). At room temperature, Cr (VI) initial concentration at 10 mgL^-1, medium aqueous solution pH at 2.5, adsorption time at 150min, the absorption rate of modified corncobs for Cr (VI) was 96.13%, higher than absorption rate of ordinary corncobs for 22.83%.

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Periodical:

Advanced Materials Research (Volumes 726-731)

Pages:

2260-2263

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.726-731.2260

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Online since:

August 2013

Authors:

Qing Shan Pan, Wei Liu, Mei Gui Ma, He Ping Yan, Bo Zhou, Du Shu Huang, Bao Sen Wang, Na Wu, Ling Shi, Shi Juan Xu

Keywords:

Citric Acid (CA), Corncobs, Cr(VI), Modified

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