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Solar photo-Fenton process for the treatment of colored soft drink wastewater: decolorization, mineralization and COD removal of oolong tea effluent.

Abstract

The decolorization and mineralization of dark-brown-colored oolong tea effluent by the solar photo-Fenton process has been examined. The solar photo-Fenton process for a fine day achieved 92% decolorization after 60 min and 94% mineralization after 80 min. For a cloudy day, about 88% decolorization and 85% mineralization were obtained after 290 min. For reference the UV light photo-Fenton process was also conducted. Very similar degradation efficiencies were found between the solar and UV light photo-Fenton processes. However, the intrinsic low cost associated with abundant solar energy turned out to be more efficient in treating oolong tea effluent as compared with UV light. The decolorization and mineralization profiles under the different light intensities could be unified with the accumulated light energy instead of with irradiation time. This implies that the solar photo-Fenton process should be designed and operated on the basis of the accumulated energy rather than the reaction time. The COD removal was 99.3% after 75 min under the fine condition. This removal rate for a fine day was approximately twice as fast than that for a cloudy day and comparable to that by the UV light irradiation. The results obtained in this study suggest that the solar photo-Fenton process offers a promising technology for decolorization and degradation of oolong tea effluent.

Authors+Show Affiliations

Research Center for Biochemical and Environmental Engineering, Department of Applied Chemistry, Toyo University, Kawagoe, Saitama, Japan.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Evaluation Study
Journal Article

Language

eng

PubMed ID

22934988

Citation

Sekine, Makoto, et al. "Solar photo-Fenton Process for the Treatment of Colored Soft Drink Wastewater: Decolorization, Mineralization and COD Removal of Oolong Tea Effluent." Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering, vol. 47, no. 14, 2012, pp. 2181-9.
Sekine M, Salehi Z, Tokumura M, et al. Solar photo-Fenton process for the treatment of colored soft drink wastewater: decolorization, mineralization and COD removal of oolong tea effluent. J Environ Sci Health A Tox Hazard Subst Environ Eng. 2012;47(14):2181-9.
Sekine, M., Salehi, Z., Tokumura, M., & Kawase, Y. (2012). Solar photo-Fenton process for the treatment of colored soft drink wastewater: decolorization, mineralization and COD removal of oolong tea effluent. Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering, 47(14), 2181-9. https://doi.org/10.1080/10934529.2012.707487
Sekine M, et al. Solar photo-Fenton Process for the Treatment of Colored Soft Drink Wastewater: Decolorization, Mineralization and COD Removal of Oolong Tea Effluent. J Environ Sci Health A Tox Hazard Subst Environ Eng. 2012;47(14):2181-9. PubMed PMID: 22934988.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Solar photo-Fenton process for the treatment of colored soft drink wastewater: decolorization, mineralization and COD removal of oolong tea effluent. AU - Sekine,Makoto, AU - Salehi,Zeinab, AU - Tokumura,Masahiro, AU - Kawase,Yoshinori, PY - 2012/9/1/entrez PY - 2012/9/1/pubmed PY - 2013/1/19/medline SP - 2181 EP - 9 JF - Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering JO - J Environ Sci Health A Tox Hazard Subst Environ Eng VL - 47 IS - 14 N2 - The decolorization and mineralization of dark-brown-colored oolong tea effluent by the solar photo-Fenton process has been examined. The solar photo-Fenton process for a fine day achieved 92% decolorization after 60 min and 94% mineralization after 80 min. For a cloudy day, about 88% decolorization and 85% mineralization were obtained after 290 min. For reference the UV light photo-Fenton process was also conducted. Very similar degradation efficiencies were found between the solar and UV light photo-Fenton processes. However, the intrinsic low cost associated with abundant solar energy turned out to be more efficient in treating oolong tea effluent as compared with UV light. The decolorization and mineralization profiles under the different light intensities could be unified with the accumulated light energy instead of with irradiation time. This implies that the solar photo-Fenton process should be designed and operated on the basis of the accumulated energy rather than the reaction time. The COD removal was 99.3% after 75 min under the fine condition. This removal rate for a fine day was approximately twice as fast than that for a cloudy day and comparable to that by the UV light irradiation. The results obtained in this study suggest that the solar photo-Fenton process offers a promising technology for decolorization and degradation of oolong tea effluent. SN - 1532-4117 UR - https://www.unboundmedicine.com/medline/citation/22934988/Solar_photo_Fenton_process_for_the_treatment_of_colored_soft_drink_wastewater:_decolorization_mineralization_and_COD_removal_of_oolong_tea_effluent_ L2 - https://www.tandfonline.com/doi/full/10.1080/10934529.2012.707487 DB - PRIME DP - Unbound Medicine ER -