KAGAKU KOGAKU RONBUNSHU
Online ISSN : 1349-9203
Print ISSN : 0386-216X
ISSN-L : 0386-216X
Special Issue [Environmental Chemical Engineering: Innovations for the Future Society]
Adsorption of Arsenic from Alkaline Solutions
Takeshi OgataHirokazu NaritaTetsuo OishiMikiya TanakaKenta Ooi
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2017 Volume 43 Issue 4 Pages 185-192

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Abstract

To clarify of the adsorption behavior of arsenic ions in alkaline solutions, we conducted arsenic adsorption tests for conventional adsorbents (polymer resin adsorbents and inorganic ion-exchangers). For polymer resin adsorbent, the adsorbent with glucamine groups adsorbed trivalent arsenic ions via hydroxyl groups in glucamine, and the strong base ion-exchanger adsorbed pentavalent arsenic ions through anion exchange. For inorganic ion-exchangers, hydroxides and iron hydroxide oxides had high ability to adsorb trivalent and pentavalent arsenic ions, and the adsorbability of hydroxides and iron hydroxide oxides for trivalent arsenic ion was higher than that for pentavalent arsenic ion. In particular, cerium(IV) hydroxide was found to be an excellent adsorbent for trivalent and pentavalent arsenic ions in alkaline solutions.

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© 2017 The Society of Chemical Engineers, Japan
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