Browse > Article

Effects of Operating Parameters on Dissolved Ozone and Phenol Degradation in Ozone Contact Reactor  

Chung, Jae-Woo (Department of Environmental Engineering, Jinju National University)
Park, Jeong-Wook (Department of Environmental Protection, Sancheong-gun)
Lee, Chun-Sik (Department of Environmental Engineering, Jinju National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.32, no.3, 2010 , pp. 241-247 More about this Journal
Abstract
The Effects of operating parameters such as initial pH, gaseous ozone concentration, supplied gas flow rate on dissolved ozone concentration and phenol degradation in ozone contact reactor were investigated. Dissolved ozone concentrations were saturated to constant values after a certain ozone contact time. The saturation values were influenced by experimental parameters. Dissolved ozone concentration decreased with the increase of initial pH because the ozone is unstable in high pH regions. The gaseous ozone concentration in a constant gas supply affected the saturation concentration of dissolved ozone and the injection rate of gas with a constant ozone concentration determined the rate to reach dissolved ozone saturation. Effects of operating parameters on phenol degradation were closely related with those of parameters on dissolved ozone concentration. Phenol degradation was enhanced by the increase of initial pH, because the degradation of dissolved ozone gave birth to free radicals which have much higher reactivity with phenol. Increase of gaseous ozone concentration and gas flow rate promoted the phenol degradation through the generation of dissolved ozone which plays the role in phenol degradation. The injection of methanol deteriorated the phenol degradation through the scavenging effect on OH radicals.
Keywords
Ozonation; Dissolved ozone; Phenol degradation; Operating parameters;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 G. V. Buxton, C. L. Greenstock, W. P. Helman and A. B. Ross, "Critical Review of Rate Constants for Reactions of Hydrated Electrons, Hydrogen Atoms and Hydroxyl Radicals$({\cdot}OH/{\cdot}O^{-})$ in Aqueous Solution," J. Phys. Chem. Data, 17(2), 51388(1988).
2 4500-$O_{3}$ Ozone(Residual), 18th edition of Standard Methods, edited by A. E. Greenberg, L. S. Clesceri and A. D. Eaton, 4-105(1992).
3 J. Hoigne and H. Bader, "Rate constants of reactions of ozone with organic and inorganic compounds in water-I, Nondissociating organic compounds," Water Res., 17, 173-183 (1983).   DOI   ScienceOn
4 J. Hoigne and H. Bader, "Rate constants of reactions of ozone with organic and inorganic compounds in water-II, Dissociating organic compounds," Water Res., 17, 185-190(1983).   DOI   ScienceOn
5 J. Hoigne, "Mechanisms, Rates and Selectivities of Oxidations of Organic Compounds Initiated by Ozonation of Water," Handbook of Ozone Technology and Applications, edited by R. G. Rice and A. Netzer, pp. 341-379(1982).
6 M. S. Elovitz and U. Gunten, "Hydroxyl Radical/ Ozone Ratios During Ozonation Processes. Ι. The $R_{ct}$ Concept, Ozone," Science & Engineering, 11, 239-260(1999).
7 H. Bader and J. Hoigne, "Determination of Ozone in Water by the Indigo Method," Water Res., 15, 449-456(1981).   DOI   ScienceOn
8 U. Kogelschatz, "Ozone Generation and Dust Collection," Electrical Discharges for Environmental Purposes, edited by E. M. Van Veldhuizen, pp. 315-344(1999).
9 이병천, 이순화, 이철희, "오존산화 공정에서 염색폐수가 혼합된 하수의 색도 제거 및 분포특성 연구," 대한환경공학회지, 29(10), 1085-1092(2007).   과학기술학회마을
10 M. A. Malik, A. Ghaffar and S. A. Malik, "Water purification by electrical discharges," Plasma Sources Sci. Technol., 10, 82-91(2001).   DOI   ScienceOn
11 A. G. Hill and R. G. Rice, "Historical Backgroud, Properties and Applications," Handbook of Ozone Technology and Applications, edited by R. G. Rice and A. Netzer, pp. 1-37(1982).
12 윤제용, 염철민, 박훈수, "국내 정수처리공정에서 오존 공정 시설의 현황과 특성," 상하수도학회지, 16, 279-292(2001).
13 B. Eliasson and U. Kogelschatz, "Nonequilibrium volume plasma chemical processing," IEEE Trans. Plamsa Sci., 19(16), 1063-1077(1991).   DOI
14 J. Staehelln and J. Hoigne, "Decomposition of ozone in water in the presence of organic solutes acting as promoters and inhibitors of radical chain reactions", Environ, Sci. Technol., 19(12), 1206-1213(1985).   DOI   ScienceOn
15 C. G. Hewes and R. P. Davison, "Kinetics of ozone decomposition and reaction with organics in water," AICHE J., 17(1), 141-147(1971).   DOI
16 G. Busca, S. Berardinelli, C. Resini and L. Arrighi, "Technologies for the removal of phenol from fluid streams: A short review of recent developments," J. Hazard. Mater., 160, 265-288(2008).   DOI   ScienceOn
17 서혜민, 조순행, 하동윤, "UV/$H_{2}O_{2}$, UV/$TiO_{2}$/$H_{2}O_{2}$, Photo-Fenton 산화방법에 의한 Citric Acid의 분해효율 비교," 대환환경공학회지, 28(4), 429-437(2006).   과학기술학회마을
18 이규훈, 정대영, 박태주, "석유화학공장 방류수내 난분해성 유기물의 Fenton 산화처리," 한국환경과학회지, 5(1), 51-59(1996).
19 목영선, 조진오, 김석태, 정우태, 강덕원, 이병호, 김진길, "펜톤 시스템에서의 과산화수소분해연구," 대한환경공학회지, 29(1), 68-73(2007).   과학기술학회마을