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Changing Morphology and Crystal Structure in Ettringite by Trivalent Chromium
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Changing Morphology and Crystal Structure in Ettringite by Trivalent Chromium

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Abstract:

Recently, solidification processing by cement material of waste that isn’t only increasing but also study is now in progress. Ettringite(Ca6[Al(OH)6]2(SO4)3•26H2O), which is a hydration product of calcium aluminate minerals is highly effective at immobilizing heavy metallic ions through a substitution mechanism. An aqueous solution containing calcium hydroxide, aluminum sulfate, and CrCl3(trivalent chromium) was subjected to irradiate by ultrasonic irradiation under atmospheric pressure to investigate its effect on the synthesis of Cr(III)-ettringite. The verified XRD (100) peak tended to shift to the left and changed morphology as CrCl3 input.

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Periodical:

Materials Science Forum (Volumes 544-545)

Pages:

529-532

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.544-545.529

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Online since:

May 2007

Authors:

Kwang Suk You, Ji Whan Ahn, Dong Yun Han, Kye Hong Cho, Hwan Kim

Keywords:

Chromium, Cr(III)-Ettringite, Ettringite, Immobilize

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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