Removal of iopromide and degradation characteristics in electron beam irradiation process

Minhwan Kwon, Yeojoon Yoon, Eunha Cho, Youmi Jung, Byung Cheol Lee, Ki Jung Paeng, Joonwun Kang

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The aim of this study is to evaluate the removal efficiency of iopromide using electron beam (E-beam) irradiation technology, and its degradation characteristics with hydroxyl radical (OH) and hydrated electron (eaq-). Studies are conducted with different initial concentrations of iopromide in pure water and in the presence of hydrogen peroxide, bicarbonate ion, or sulfite ion. E-beam absorbed dose of 19.6kGy was required to achieve 90% degradation of 100μM iopromide and the E-beam/H 2O 2 system increased the removal efficiency by an amount of OH generation. In the presence of OH scavengers (10mM sulfite ion), the required dose for 90% removal of 100μM iopromide was only 0.9kGy. This greatly enhanced removal was achieved in the presence of OH scavengers, which was rather unexpected and unlike the results obtained from most advanced oxidation process (AOP) experiments. The reasons for this enhancement can be explained by a kinetic study using the bimolecular rate constants of each reaction species. To explore the reaction scheme of iopromide with OH or eaq- and the percent of mineralization for the two reaction paths, the total organic carbon (TOC), released iodide, and intermediates were analyzed.

Original languageEnglish
Pages (from-to)126-134
Number of pages9
JournalJournal of Hazardous Materials
Volume227-228
DOIs
Publication statusPublished - 2012 Aug 15

Fingerprint

iopromide
Electron beams
irradiation
Irradiation
Electrons
Degradation
electron
degradation
sulfite
scavenger
Sulfites
ion
Ions
iodide
hydroxyl radical
Organic carbon
bicarbonate
Hydrogen peroxide
hydrogen peroxide
total organic carbon

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

Cite this

Kwon, Minhwan ; Yoon, Yeojoon ; Cho, Eunha ; Jung, Youmi ; Lee, Byung Cheol ; Paeng, Ki Jung ; Kang, Joonwun. / Removal of iopromide and degradation characteristics in electron beam irradiation process. In: Journal of Hazardous Materials. 2012 ; Vol. 227-228. pp. 126-134.
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Removal of iopromide and degradation characteristics in electron beam irradiation process. / Kwon, Minhwan; Yoon, Yeojoon; Cho, Eunha; Jung, Youmi; Lee, Byung Cheol; Paeng, Ki Jung; Kang, Joonwun.

In: Journal of Hazardous Materials, Vol. 227-228, 15.08.2012, p. 126-134.

Research output: Contribution to journalArticle

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