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http://dx.doi.org/10.5322/JES.2012.21.7.845

The Study of DEP Degradation Properties by Combination US and UV Lamp of Different Wavelength  

Na, Seung-Min (Department of Civil Environmental and Architecture, Korea University)
Cai, Jinhua (Department of Civil Environmental and Architecture, Korea University)
Shin, Dong-Hoon (Department of Civil Environmental and Architecture, Korea University)
Cui, Mingcan (Department of Civil Environmental and Architecture, Korea University)
Khim, Jee-Hyeong (Department of Civil Environmental and Architecture, Korea University)
Publication Information
Journal of Environmental Science International / v.21, no.7, 2012 , pp. 845-853 More about this Journal
Abstract
Diethyl phthalate (DEP) is widely spread in the natural environment as an endocrine disruption chemicals (EDs). Therefore, in this study, ultrasound (US) and ultraviolet (UVC), including various applied power density (10-40 W/L), UV wavelengths (365 nm, 254 nm and 185 nm) and frequencies (283 kHz, 935 kHz) were applied to a DEP contaminated solution. The pseudo-first order degradation rate constants were in the order of $10^{-1}$ to $10^{-4}\;min^{-1}$ depending on the processes. Photolytic and sonophotolytic DEP degradation rate also were high at shortest UV wavelength (VUV) due to the higher energy of photons, higher molar absorption coefficient of DEP and increased hydroxyl radical generation from homolysis of water. Sonolytic DEP degradation rate increased with increase of applied input power and the dominant reaction mechanism of DEP in sonolysis was estimated as hydroxyl radical reaction by the addition of t-BuOH, which is a common hydroxyl radical scavenger. Moreover, synergistic effect of were also observed for sonophotolytic degradation with various UV irradiation.
Keywords
Diethyl phthalate; Ultrasound; Ultraviolet; Frequency; Hydroxyl radical;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 나승민, 안윤경, 최명찬, 조상현, 김지형, 2011, 혼합된 고급산화공정 (AOPs)을 이용한 내분비계장애물질(DEP, NP)의 분해특성 연구, 대한환경과학회지, 20(2), 2231-239.
2 손현석, 조경덕, 2008, 광반응, 펜톤 그리고 $Fe^{2+}$와 UV의 조합반응을 이용한 Triclosan 의 분해: 공정비교연구, 대한환경공학회지, 30(5), 517-523.
3 정연정, 오병수, 강준원, 2006, 오존, UV, 오존/UV 혼합공정을 이용한 Diethyl phthalate (DEP)의 제거특성연구, 대한환경공학회지, 28(2), 137-143.
4 Lau, T. K., Chu, W., Graham, N., 2005, The degradation of endocrine disruptor di-n-butyl phthalate by UV irradiation: a photolysis and product study, Chemosphere., 60, 1045-1053.   DOI
5 Nagata, Y., Nakagawa, M., Okuno, H., Mizukoshi, Y., Yim, B., Maeda, Y., 2000, Sonochemical degradation of chlorophenols in water, Ultrason. Sonochem., 7, 115-120.   DOI
6 Petrier, C., Francony, A., 1997, Ultrasonic waste-water treatment: incidence of ultrasonic frequency on the rate of phenol and carbon tetrachloride degradation, Ultrason. Sonochem., 4, 295-300.   DOI   ScienceOn
7 Son, Y. G., Lim, M. H., Khim, J. H., 2009, Investigation of acoustic cavitation energy in a large-scale sonoreactor, Ultrason. Sonochem., 16, 552-556.   DOI
8 Swinehart, D. F., 1963, The Beer-Lambert Law, J. Chem. Educ., 39, 7, 333-335.
9 Tarr, M. A., 2003, Chemical degradation methods for wastes and pollutants, NewYork. Basel, Marcel Dekker, Inc.
10 Wang, D., Oppenlander, T., Ei-Din, M. G., Bolton, J. R., 2010, Comparison of the disinfection effects of vacuum-UV (VUV) and UV light on Bacillussubtilis pores in aqueous suspensions at 172, 222 and 254 nm, Photochem. Photobiol., 86, 176-181.   DOI
11 Wu, C., Liu, X., Wei, D., Fan, J., Wang, L., 2001, Photosonochemical Degradation of Phenol in Water, Wat. Res., 35(6), 3927-3933.   DOI
12 Yang, G. P., Zhao, X. K., Sun, X. J., Lu, X. L., 2005, Oxidative degradation of diethyl phthalate by photochemically enhanced Fenton reaction, Haz. Mat., B126, 112-118.
13 Grichetschkina, M. V., Zaitsev, N. K., Braun, A. M., 1996, VUV-photolysis oxidative degradation of organics inhibiting the inverse-voltammetric determination of heavy metals. 1. Humic substances, Toxicol. Environ. Chem., 53, 143-151.   DOI
14 Yuan, S. Y., Liu, C., Liao, C. S., Chang, B. V., 2002, Occurrence and microbial degradation of phthalate esters in Taiwan river sediments, Chemosphere., 49, 1295-1299.   DOI
15 Beckee, M. A., Hua, I., 2001, Impact of ultrasonic frequency on aqueous sonoluminescence and sonochemistry, J. Phys. Chem. A., 105, 3796-3802.   DOI   ScienceOn
16 Drijvers, D., Baets, R. D., Visscher, A. D., Langenhove, H. V., 1996, Sonolysis of trichloroethylene in aqueous solution: volatile organic intermediates, Ultrason. Sonochem., 3, 83-90.   DOI   ScienceOn
17 Hamdaoui, O., Naffrechoux, E., 2008, Sonochemical and photosonochemical degradation of 4-chlorophenol in aqueous media, Ultrason. Sonochem., 15, 981-987.   DOI
18 Hua, I., Hochemer, R. H., Hoffmann, M. R., 1995, Sonochemical degradation of p-nitrophenol in a parallel plate near field acoustical processor, Environ. Sci. Technol., 29, 2790-2798.   DOI   ScienceOn
19 Hua, I., Hoffmann, M. R., 1997, Optimization of ultrasonic irradiation as an advanced oxidation technology, Environ. Sci. Technol., 31, 2237-2243.   DOI   ScienceOn
20 Kidak, R., Ince, N. H., 2007, Catalysis of advanced oxidation reactions by ultrasound, a case study with phenol, Haz. Mat., 146, 630-635.   DOI
21 Khokhawala, I. M., Gogate, P. R., 2010, Degradation of phenol using a combination of ultrasonic and UV irradiations at pilot scale operation. Ultrason. Sonochem., 17, 833-838.   DOI
22 Lim, M. H., Kim, S. H., Kim, Y. U., Khim, J., 2007, Sonolysis of chlorinated compounds in aqueous solution, Ultrason. Sonochem., 14, 93-98.   DOI   ScienceOn
23 Koda, S., Kimura, T., Kondo, T., Mitome, H., 2003, A standard method to calibrate sonochemical efficiency of an individual reaction system, Ultrason. Sonochem., 10, 149-156.   DOI   ScienceOn