Lee, HC In, JH Kim, JH Hwang, KY Lee, CH 2024-01-21T04:09:34Z 2024-01-21T04:09:34Z 2021-09-02 2005-11 0256-1115 https://pubs.kist.re.kr/handle/201004/136042 2,4-Dichlorophenol (2,4-DCP), as a halogenated model pollutant, was decomposed by using superscriptical water oxidation (SCWO) in a batch reactor made of Hastelloy C-276. SCWO experiments for 2,4-DCP decomposition were performed in the range of 380-420 degrees C, 230-280 bar and 0.074+-0.221 mol/L H2O2. The effect of oixidant concentration in the SCWO process decreased with an increase in tempoerature of 380 degrees C. However, the role of the oxidant concentration in the SCWO process decreased with an increase in temperature; also excess oxidant played a key role in quite significantly decreasing the activiation energy of 2,4-DCP oxidation. Variation of thereaction rate by the change of pressure was negligible even at a near critical temperature. The kinetic rate for the decomposition of 2,4-DCP in the SCWO process was well described by a simple first order kinetic and global reaction rate model. From the SCWO experiments, the various intermediates identified with a GC/MS implied that the first reaction pathway for 2,4-DCP decomposition led to dimers such as dichlorophenoxyphenols, and the second led to single-ring and ring-opening products. English KOREAN INSTITUTE CHEMICAL ENGINEERS Kinetic analysis for decomposition of 2,4-dichlorophenol by supercritical water oxidation Article 10.1007/BF02705669 1 KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.22, no.6, pp.882 - 888 KOREAN JOURNAL OF CHEMICAL ENGINEERING 22 6 882 888 N scie scopus kci ART001119262 000234197300013 2-s2.0-33644531958 Chemistry, Multidisciplinary Engineering, Chemical Chemistry Engineering Article CORROSION 2-CHLOROPHENOL CHLORIDE ALLOYS PHENOL 2,4-dichlorophenol (2,4-DCP) supercritical water oxidation (SCWO) kinetic rate