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Feasibility study of ultraviolet activated persulfate oxidation of phenol.
Chemosphere. 2011 Feb; 82(8):1168-72.C

Abstract

Using ultraviolet photolytic persulfate activation to produce two sulfate radicals (SO(4)(-)) exhibits a potential for destroying organic contaminants in wastewater treatment applications. This study investigated both the feasibility of using a UV/SPS (sodium persulfate) process to treat phenol in aqueous phase and the effect of pH on degradation efficiency and TOC removal. The results revealed that a high initial persulfate concentration (i.e., 84 mM) and a lower initial phenol concentration (i.e., 0.5mM) resulted in rapid and complete phenol degradation within 20 min. For all three pHs evaluated (i.e., 3, 7 and 11), complete phenol degradation was also achieved after 30 min of treatment by UV/SPS oxidation processes (i.e., under an SPS/phenol molar ratio of 84/0.5) with pseudo-first-order rate constants (k(obs, phenol)) of 0.14-0.16 min(-1) (average half-life (t(1/2)) = 4.5 min). UV-Vis spectrum scanning of the aqueous solution during treatment identified the development of brown color in the wavelength range of 400-460 nm. The colored intermediate compounds that formed were suspiciously similar to those observed during Fenton treatment. However, a more aggressive oxidation at pH 11 showed a rapid and more complete removal of TOC in aqueous phase. Therefore, it is recommended that UV photolytic persulfate activation under basic pH be a preferred condition for treatment of phenol.

Authors+Show Affiliations

Department of Environmental Engineering, National Chung Hsing University 250 Kuo-kuang Road, Taichung 402, Taiwan.No affiliation info availableNo affiliation info available

Pub Type(s)

Evaluation Study
Journal Article

Language

eng

PubMed ID

21220146

Citation

Lin, Ya-Ting, et al. "Feasibility Study of Ultraviolet Activated Persulfate Oxidation of Phenol." Chemosphere, vol. 82, no. 8, 2011, pp. 1168-72.
Lin YT, Liang C, Chen JH. Feasibility study of ultraviolet activated persulfate oxidation of phenol. Chemosphere. 2011;82(8):1168-72.
Lin, Y. T., Liang, C., & Chen, J. H. (2011). Feasibility study of ultraviolet activated persulfate oxidation of phenol. Chemosphere, 82(8), 1168-72. https://doi.org/10.1016/j.chemosphere.2010.12.027
Lin YT, Liang C, Chen JH. Feasibility Study of Ultraviolet Activated Persulfate Oxidation of Phenol. Chemosphere. 2011;82(8):1168-72. PubMed PMID: 21220146.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Feasibility study of ultraviolet activated persulfate oxidation of phenol. AU - Lin,Ya-Ting, AU - Liang,Chenju, AU - Chen,Jiun-Hua, Y1 - 2011/01/08/ PY - 2010/09/17/received PY - 2010/12/04/revised PY - 2010/12/06/accepted PY - 2011/1/12/entrez PY - 2011/1/12/pubmed PY - 2011/3/11/medline SP - 1168 EP - 72 JF - Chemosphere JO - Chemosphere VL - 82 IS - 8 N2 - Using ultraviolet photolytic persulfate activation to produce two sulfate radicals (SO(4)(-)) exhibits a potential for destroying organic contaminants in wastewater treatment applications. This study investigated both the feasibility of using a UV/SPS (sodium persulfate) process to treat phenol in aqueous phase and the effect of pH on degradation efficiency and TOC removal. The results revealed that a high initial persulfate concentration (i.e., 84 mM) and a lower initial phenol concentration (i.e., 0.5mM) resulted in rapid and complete phenol degradation within 20 min. For all three pHs evaluated (i.e., 3, 7 and 11), complete phenol degradation was also achieved after 30 min of treatment by UV/SPS oxidation processes (i.e., under an SPS/phenol molar ratio of 84/0.5) with pseudo-first-order rate constants (k(obs, phenol)) of 0.14-0.16 min(-1) (average half-life (t(1/2)) = 4.5 min). UV-Vis spectrum scanning of the aqueous solution during treatment identified the development of brown color in the wavelength range of 400-460 nm. The colored intermediate compounds that formed were suspiciously similar to those observed during Fenton treatment. However, a more aggressive oxidation at pH 11 showed a rapid and more complete removal of TOC in aqueous phase. Therefore, it is recommended that UV photolytic persulfate activation under basic pH be a preferred condition for treatment of phenol. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/21220146/Feasibility_study_of_ultraviolet_activated_persulfate_oxidation_of_phenol_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(10)01417-7 DB - PRIME DP - Unbound Medicine ER -