Han, Seung Ho Veriansyah, Bambang Kim, Jae-Duck Lee, Jong-Chol 2024-01-21T00:04:50Z 2024-01-21T00:04:50Z 2021-08-31 2007-12 1093-4529 https://pubs.kist.re.kr/handle/201004/133967 The oxidation rate of pentachlorophenol, [C6HCl5O] which is used to control termites and as a general herbicide and also as the probable human's carcinogen, was investigated in an isothermal continuous tubular reactor under supercritical water oxidation (SCWO) conditions. The experiments were conducted at a temperature of 400-550 degrees C and fixed pressure of 25 MPa, with a residence time that ranged from 6 s to 26 s. The conversion of PCP was monitored by analyzing total organic carbon (TOC) on the liquid effluent samples. The initial TOC concentrations of PCP were varied from 0.74 mmol/L to 2.91 mmol/L and the oxygen concentrations were varied from 0.46 mmol/ L to 3.52 mmol/ L. By taking into account the dependence of the oxidant and TOC concentration on the reaction rate, a global PCP oxidation rate was regressed from the data of 48 experiments, to a 95% confidence level. The resulting activation energy was determined to be 43.56 +/- 1.47 kJ/mol, and the pre-exponential factor was (1.92 +/- 0.46) x 102 L-1.16 mmo(l-0.16) s(-1). The reaction orders for the PCP (based on TOC) and the oxidant were 0.74 +/- 0.02 and 0.42 +/- 0.05, respectively. English TAYLOR & FRANCIS INC Pentachlorophenol oxidation rates in supercritical water Article 10.1080/10934520701627090 1 JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING, v.42, no.14, pp.2105 - 2109 JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 42 14 2105 2109 scie scopus 000251705600005 2-s2.0-37049008661 Engineering, Environmental Environmental Sciences Engineering Environmental Sciences & Ecology Article pentachlorophenol supercritical water oxidation oxidation rate TOC disappearance SCWO PCP