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HomeSolid State PhenomenaSolid State Phenomena Vol. 262Adsorption of Chromium (VI) and Desorption as...

Adsorption of Chromium (VI) and Desorption as Chromium (III) from the Aqueous Chromium (VI) Solution Using Persimmon Gel

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Abstract:

Adsorption of Cr(VI) and desorption of the Cr that was adsorbed using persimmon gel was examined. Most of the Cr(VI) was adsorbed at a pH value of 2, and a part of that was reduced to Cr(III) in the solution using persimmon gel, which has many polyhydroxyphenyl groups. A small amount of Cr was desorbed using some acidic or alkaline reagents at 30 °C. However, all of the Cr adsorbed using persimmon gel was desorbed at reflux temperature as Cr(III) using 1M HCl. Cycles of Cr(VI) adsorption and desorption as Cr(III) cycles were repeated 9 times. The adsorption of Cr was quantitatively repeated until 8 times and desorption of Cr was almost quantitatively repeated until 9 times.

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22nd International Biohydrometallurgy Symposium

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Periodical:

Solid State Phenomena (Volume 262)

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687-691

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.262.687

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Online since:

August 2017

Authors:

Takehiko Tsuruta*, Tomonobu Hatano

Keywords:

Chromium (III), Chromium (VI), Persimmon Gel, Recycle

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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