Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.chemosphere.2005.08.062
Title: Ferrate(VI): Green chemistry oxidant for degradation of cationic surfactant
Authors: Eng, Y.Y.
Sharma, V.K.
Ray, A.K. 
Keywords: Cationic surfactant
Cetylpyridinium chloride
Degradation
Ferrate(VI)
Oxidation
Issue Date: Jun-2006
Source: Eng, Y.Y., Sharma, V.K., Ray, A.K. (2006-06). Ferrate(VI): Green chemistry oxidant for degradation of cationic surfactant. Chemosphere 63 (10) : 1785-1790. ScholarBank@NUS Repository. https://doi.org/10.1016/j.chemosphere.2005.08.062
Abstract: Iron in its familiar form exists in the +2 and +3 oxidation states, however, higher oxidation state of iron +6, ferrate(VI) ( FeVI O4 2 - ) can be obtained. The high oxidation power of ferrate(VI) can be utilized in developing cleaner ("greener") technology for remediation processes. This paper demonstrates the unique property of ferrate(VI) to degrade almost completely the cationic surfactant, cetylpyridinium chloride (C5H5N+(CH2)15CH3 · H2O Cl-, CPC). The Rate law for the oxidation of CPC by ferrate(VI) at pH 9.2 was found to be: -d[Fe(VI)]/dt = k[Fe(VI)][CPC]2. Ferrate(VI) oxidizes CPC within minutes and molar consumption of ferrate(VI) was nearly equal to the oxidized CPC. The decrease in total organic carbon (TOC) from CPC was more than 95%; suggesting mineralization of CPC to carbon dioxide. Ammonium ion was the other product of the oxidation. This is the first report in which FeVI O4 2 - ion opens the pyridine ring and mineralizes the aliphatic chain of the organic molecule giving inorganic ions. © 2005 Elsevier Ltd. All rights reserved.
Source Title: Chemosphere
URI: http://scholarbank.nus.edu.sg/handle/10635/88908
ISSN: 00456535
DOI: 10.1016/j.chemosphere.2005.08.062
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