Arsenite oxidation and treatment by ultrasound/iron in aqueous solutions

Mingcan Cui, Min Jang, Seban Lee, Boyoun Kweon, Seong Taek Yun, Jeehyeong Khim

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12 Citations (Scopus)

Abstract

The oxidation and treatment of arsenite [As(III)] with ultrasound (US) and Fe(II) was investigated in aqueous solutions. The oxidation of As(III) into As(V), over 99.1%, was obtained by US450kHz. The kinetics of As(III) oxidation were interpreted using the modified pseudo-first-order kinetic model. The half life of As(III) was approximately 3.47 × 10-2 for the US450kHz/Fe(II)0:4mg/L reaction and depended on the iron concentration. The arsenic removal capacity of complexed and coprecipitated FeAsO4(s) was estimated to be 16.12mg per g of iron oxide. It is concluded that the sonochemical treatment of As(III) solution in the presence of Fe(II) is a simple and viable technique for the oxidation of As(III) into arsenate [As(V)] and the treatment of total arsenic.

Original languageEnglish
Article number07HE08
JournalJapanese journal of applied physics
Volume50
Issue number7 PART 2
DOIs
Publication statusPublished - 2011 Jul

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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