Arsenite oxidation and treatment by ultrasound/iron in aqueous solutions

Cui, M. and Jang, M. and Lee, S. and Kweon, B. and Yun, S.T. and Khim, J. (2011) Arsenite oxidation and treatment by ultrasound/iron in aqueous solutions. Japanese Journal of Applied Physics, 50 (7). ISSN 0021-4922, DOI

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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. © 2011 The Japan Society of Applied Physics.

Item Type: Article
Additional Information: 2 Sp. Iss. SI 794FP Times Cited:3 Cited References Count:18
Uncontrolled Keywords: Arsenic removal, Arsenite oxidation, Co-precipitated, Half lives, Iron concentrations, Pseudo-first-order kinetic models, Sonochemical treatment, Arsenic, Iron oxides, Pollution control, Solutions, Ultrasonic applications, Oxidation
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 30 Jan 2014 03:56
Last Modified: 30 Jan 2014 03:56

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