Arsenite oxidation and treatment by ultrasound/iron in aqueous solutions
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....
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| Main Authors: | , , , , , |
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| Format: | Article |
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2011
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| Online Access: | http://www.scopus.com/inward/record.url?eid=2-s2.0-79960583769&partnerID=40&md5=8aeb7c49c58194686425f80a281cf7ac adsabs.harvard.edu/abs/2011JaJAP..50gHE08C https://getinfo.de/app/Arsenite-Oxidation-and-Treatment-by-Ultrasound/id/BLCP3ACN080123915 http://u http://www.scopus.com/inward/record.url?eid=2-s2.0-79960583769&partnerID=40&md5=8aeb7c49c58194686425f80a281cf7ac adsabs.harvard.edu/abs/2011JaJAP..50gHE08C https://getinfo.de/app/Arsenite-Oxidation-and-Treatment-by-Ultrasound/id/BLCP3ACN080123915 http://u http://eprints.um.edu.my/9190/1/Arsenite_Oxidation_and_Treatment_by_Ultrasound.pdf |
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| Summary: | 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. |
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