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Stabilization of hydrogen peroxide using phthalic acids in the Fenton and Fenton-like oxidation

Title
Stabilization of hydrogen peroxide using phthalic acids in the Fenton and Fenton-like oxidation
Author
박주양
Keywords
Fenton oxidation; Fenton-like reaction; Stabilization; Hydrogen peroxide; Phthalic acid; REMEDIATION; SOIL; DECOMPOSITION; DEGRADATION; REAGENT; H2O2; PHOTODEGRADATION; MECHANISM; INDICATOR; LIFETIME
Issue Date
2013-01
Publisher
Elsevier Science B.V., Amsterdam.
Citation
Chemosphere, January 2013 90(2), p.812-819
Abstract
The stabilization of hydrogen peroxide was evaluated in Fenton reaction with phthalic acid as a stabilizer. The stabilization effect was high at a low pH < pK(a1) and the effect was negligible at a high pH above pK(a2) in both Fenton and Fenton-like reactions. While the lifetime of hydrogen peroxide was prolonged by phthalic acid, the stabilization could not contribute on the increase of the reaction rate in the current Fenton and Fenton-like experimental systems because the systems were all well mixed systems. The interaction between dissolved iron and phthalic acid was spectroscopic monitored in variable pH over pK(a1) and pK(a2) of phthalic acid. Ferrous iron was well stabilized and the initial concentration was kept after mixing with phthalate while ferric iron was removed from the aqueous phase by the phthalic acid. It could be concluded that the stabilization by phthalic acid is due to inhibition of catalytic activity of dissolved iron and minimizes the self-decomposition of hydrogen peroxide. The stabilization is affected by ionization state of the organic acid. (C) 2012 Elsevier Ltd. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0045653512012301https://repository.hanyang.ac.kr/handle/20.500.11754/69634
ISSN
0045-6535
DOI
10.1016/j.chemosphere.2012.09.089
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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