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Ferrate(VI): green chemistry oxidant for degradation of cationic surfactant.
Chemosphere. 2006 Jun; 63(10):1785-90.C

Abstract

Iron in its familiar form exists in the +2 and +3 oxidation states, however, higher oxidation state of iron +6, ferrate(VI) (Fe(VI)O(4)(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 (C(5)H(5)N(+)(CH(2))(15)CH(3).H(2)O 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 Fe(VI)O(4)(2-) ion opens the pyridine ring and mineralizes the aliphatic chain of the organic molecule giving inorganic ions.

Authors+Show Affiliations

Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

16303166

Citation

Eng, Yong Yong, et al. "Ferrate(VI): Green Chemistry Oxidant for Degradation of Cationic Surfactant." Chemosphere, vol. 63, no. 10, 2006, pp. 1785-90.
Eng YY, Sharma VK, Ray AK. Ferrate(VI): green chemistry oxidant for degradation of cationic surfactant. Chemosphere. 2006;63(10):1785-90.
Eng, Y. Y., Sharma, V. K., & Ray, A. K. (2006). Ferrate(VI): green chemistry oxidant for degradation of cationic surfactant. Chemosphere, 63(10), 1785-90.
Eng YY, Sharma VK, Ray AK. Ferrate(VI): Green Chemistry Oxidant for Degradation of Cationic Surfactant. Chemosphere. 2006;63(10):1785-90. PubMed PMID: 16303166.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ferrate(VI): green chemistry oxidant for degradation of cationic surfactant. AU - Eng,Yong Yong, AU - Sharma,Virender K, AU - Ray,Ajay K, Y1 - 2005/11/21/ PY - 2005/05/04/received PY - 2005/08/30/revised PY - 2005/08/31/accepted PY - 2005/11/24/pubmed PY - 2006/8/19/medline PY - 2005/11/24/entrez SP - 1785 EP - 90 JF - Chemosphere JO - Chemosphere VL - 63 IS - 10 N2 - Iron in its familiar form exists in the +2 and +3 oxidation states, however, higher oxidation state of iron +6, ferrate(VI) (Fe(VI)O(4)(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 (C(5)H(5)N(+)(CH(2))(15)CH(3).H(2)O 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 Fe(VI)O(4)(2-) ion opens the pyridine ring and mineralizes the aliphatic chain of the organic molecule giving inorganic ions. SN - 0045-6535 UR - https://www.unboundmedicine.com/medline/citation/16303166/Ferrate_VI_:_green_chemistry_oxidant_for_degradation_of_cationic_surfactant_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(05)01170-7 DB - PRIME DP - Unbound Medicine ER -