Radiolysis of acetic acid aqueous solutions—Effect of pH and persulfate addition
The degradation of acetic acid in aqueous solution by ionizing radiation was studied. The radiolysis of acetic acid solution induces the almost complete degradation and mineralization of this compound. The high yield of acetic acid mineralization is explained by the degradation of oxalic acid by sol...
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| Format: | Journal Article |
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Elsevier BV
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/32370 |
| _version_ | 1848753644863750144 |
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| author | Criquet, Justine Karpel Vel Leitner, N. |
| author_facet | Criquet, Justine Karpel Vel Leitner, N. |
| author_sort | Criquet, Justine |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The degradation of acetic acid in aqueous solution by ionizing radiation was studied. The radiolysis of acetic acid solution induces the almost complete degradation and mineralization of this compound. The high yield of acetic acid mineralization is explained by the degradation of oxalic acid by solvated electron. The degradation of acetic acid depends on the pH of the solution. The best degradation is observed at pH 4.5 due to the higher rate constant of reaction of acetate with hydroxyl radicals and the competitive reactions of inorganic carbon which occur at higher pH. The influence of persulfate ion (S2O82−) addition that forms the sulfate radical (SO4 −) during irradiation in solution was examined. The persulfate addition induces an almost constant degradation of acetic acid whatever the initial pH of the solution. The decrease of pH during the persulfate radiolysis partly explains the high degradation observed. But the additional radicals formed by the persulfate introduction also improve the degradation. |
| first_indexed | 2025-11-14T08:27:48Z |
| format | Journal Article |
| id | curtin-20.500.11937-32370 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:27:48Z |
| publishDate | 2011 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-323702017-09-13T16:08:11Z Radiolysis of acetic acid aqueous solutions—Effect of pH and persulfate addition Criquet, Justine Karpel Vel Leitner, N. Water treatment Oxidation Sulfate radical Carboxylic acid e-Beam The degradation of acetic acid in aqueous solution by ionizing radiation was studied. The radiolysis of acetic acid solution induces the almost complete degradation and mineralization of this compound. The high yield of acetic acid mineralization is explained by the degradation of oxalic acid by solvated electron. The degradation of acetic acid depends on the pH of the solution. The best degradation is observed at pH 4.5 due to the higher rate constant of reaction of acetate with hydroxyl radicals and the competitive reactions of inorganic carbon which occur at higher pH. The influence of persulfate ion (S2O82−) addition that forms the sulfate radical (SO4 −) during irradiation in solution was examined. The persulfate addition induces an almost constant degradation of acetic acid whatever the initial pH of the solution. The decrease of pH during the persulfate radiolysis partly explains the high degradation observed. But the additional radicals formed by the persulfate introduction also improve the degradation. 2011 Journal Article http://hdl.handle.net/20.500.11937/32370 10.1016/j.cej.2011.07.079 Elsevier BV restricted |
| spellingShingle | Water treatment Oxidation Sulfate radical Carboxylic acid e-Beam Criquet, Justine Karpel Vel Leitner, N. Radiolysis of acetic acid aqueous solutions—Effect of pH and persulfate addition |
| title | Radiolysis of acetic acid aqueous solutions—Effect of pH and persulfate addition |
| title_full | Radiolysis of acetic acid aqueous solutions—Effect of pH and persulfate addition |
| title_fullStr | Radiolysis of acetic acid aqueous solutions—Effect of pH and persulfate addition |
| title_full_unstemmed | Radiolysis of acetic acid aqueous solutions—Effect of pH and persulfate addition |
| title_short | Radiolysis of acetic acid aqueous solutions—Effect of pH and persulfate addition |
| title_sort | radiolysis of acetic acid aqueous solutions—effect of ph and persulfate addition |
| topic | Water treatment Oxidation Sulfate radical Carboxylic acid e-Beam |
| url | http://hdl.handle.net/20.500.11937/32370 |