Tags

Type your tag names separated by a space and hit enter

Significant diethyl phthalate (DEP) degradation by combined advanced oxidation process in aqueous solution.
J Environ Manage. 2012 Jun 30; 101:104-10.JE

Abstract

Ultrasound (US) combined with ultraviolet (UV) irradiation and a titanium dioxide (TiO(2)) catalyst was used to effectively remove diethyl phthalate (DEP) from aqueous solutions. Single (sonolysis, photolysis, photocatalysis) and combined (sonophotolysis, sonophotocatalysis) processes were performed to confirm the synergistic effects and DEP degradation mechanism. Using only US, the optimum frequency for DEP degradation was 283 kHz. At this frequency a high rate of hydrogen peroxide (H(2)O(2)) formation was observed of approximately 0.32 mM min(-1). The pseudo-first order degradation rate constants were 10(-2)-10(-4) min(-1) depending on the process. Significant degradation and mineralization (TOC) of DEP were observed with the sonophotolytic and sonophotocatalytic processes. Moreover, synergistic effects of 1.29 and 1.95 were exhibited at the sonophotocatalytic and sonophotolytic DEP degradation, respectively. Furthermore, additional advantageous reactions may occur in the heterogeneous sonophotocatalytic process due to interactions between US, UV, and the photocatalyst.

Authors+Show Affiliations

School of Civil, Environmental and Architectural Engineering, Korea University, 5 Anam-dong, Seoul, South Korea.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22406850

Citation

Na, Seungmin, et al. "Significant Diethyl Phthalate (DEP) Degradation By Combined Advanced Oxidation Process in Aqueous Solution." Journal of Environmental Management, vol. 101, 2012, pp. 104-10.
Na S, Ahn YG, Cui M, et al. Significant diethyl phthalate (DEP) degradation by combined advanced oxidation process in aqueous solution. J Environ Manage. 2012;101:104-10.
Na, S., Ahn, Y. G., Cui, M., & Khim, J. (2012). Significant diethyl phthalate (DEP) degradation by combined advanced oxidation process in aqueous solution. Journal of Environmental Management, 101, 104-10. https://doi.org/10.1016/j.jenvman.2012.01.028
Na S, et al. Significant Diethyl Phthalate (DEP) Degradation By Combined Advanced Oxidation Process in Aqueous Solution. J Environ Manage. 2012 Jun 30;101:104-10. PubMed PMID: 22406850.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Significant diethyl phthalate (DEP) degradation by combined advanced oxidation process in aqueous solution. AU - Na,Seungmin, AU - Ahn,Yun-Gyong, AU - Cui,Mingcan, AU - Khim,Jeehyeong, Y1 - 2012/03/07/ PY - 2011/06/07/received PY - 2012/01/02/revised PY - 2012/01/09/accepted PY - 2012/3/13/entrez PY - 2012/3/13/pubmed PY - 2012/9/21/medline SP - 104 EP - 10 JF - Journal of environmental management JO - J Environ Manage VL - 101 N2 - Ultrasound (US) combined with ultraviolet (UV) irradiation and a titanium dioxide (TiO(2)) catalyst was used to effectively remove diethyl phthalate (DEP) from aqueous solutions. Single (sonolysis, photolysis, photocatalysis) and combined (sonophotolysis, sonophotocatalysis) processes were performed to confirm the synergistic effects and DEP degradation mechanism. Using only US, the optimum frequency for DEP degradation was 283 kHz. At this frequency a high rate of hydrogen peroxide (H(2)O(2)) formation was observed of approximately 0.32 mM min(-1). The pseudo-first order degradation rate constants were 10(-2)-10(-4) min(-1) depending on the process. Significant degradation and mineralization (TOC) of DEP were observed with the sonophotolytic and sonophotocatalytic processes. Moreover, synergistic effects of 1.29 and 1.95 were exhibited at the sonophotocatalytic and sonophotolytic DEP degradation, respectively. Furthermore, additional advantageous reactions may occur in the heterogeneous sonophotocatalytic process due to interactions between US, UV, and the photocatalyst. SN - 1095-8630 UR - https://www.unboundmedicine.com/medline/citation/22406850/Significant_diethyl_phthalate__DEP__degradation_by_combined_advanced_oxidation_process_in_aqueous_solution_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0301-4797(12)00039-4 DB - PRIME DP - Unbound Medicine ER -