| Title |
Treatment of Organic Acid Cleaning Reagent Using Fenton Oxidation |
| Authors |
김동현 ; 이경혁 ( Dong Hyun Kim ; Kyung Hyuk Lee ) |
| Abstract |
Degradation of organic chemicals in organic acid cleaning reagent using Fenton oxidation was demonstrated. The optimum conditions for Fenton oxidation of organic acid cleaning reagent were determined; pH of solution was 3.5, the concentration of ferrous ion (Fe(Ⅱ)) was 90mM, and the ratio of ferrous ion to hydrogen peroxide (H₂O₂) was 1:4.9(mM:mM). Under the optimum conditions of Fenton oxidation, the concentration of total organic carbon (TOC) of organic acid cleaning reagent decreased from 8668ppm to 5585ppm after Fenton oxidation and the reaction was completed within or less than 10 minutes. When Fenton oxidation was performed, the concentration of TOC of organic acid cleaning reagent became 3593ppm and 2678ppm after the second and the third Fenton oxidation, respectively. The components, hydroxy acetic acid and thiourea, of organic acid cleaning reagent were difficult to be degraded, on the other hand, formic acid, triton X-100, and sorbic acid were easily degraded by Fenton oxidation. |