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Degradation of a four-pesticide mixture by combined photo-Fenton and biological oxidation.
Water Res. 2009 Feb; 43(3):653-60.WR

Abstract

Complete degradation of a pesticide mixture by a combination of a photo-Fenton pretreatment and an activated-sludge batch reactor is demonstrated. Four commercial pesticides, Laition, Metasystox, Sevnol and Ultracid were chosen for this experiment. The active ingredients are, respectively, dimethoate, oxydemeton-methyl, carbaryl and methidathion. The original pesticide concentration was 200 mg L(-1). Biotreatment began after 31% photocatalytic mineralization, which after 5 h in a 6-L stirred batch-mode tank reactor with non-acclimated activated sludge, leaves the photo-Fenton effluent completely degraded. This biotreatment time is shorter than commonly found in municipal wastewater treatment plants (approximately 8-10 h). Therefore, the combined process is effective for rapid pesticide degradation in wastewater with complete removal of parent compounds and the associated DOC concentration. Nonetheless, assessment of this technology should take into account higher pesticide concentrations and how this factor affects both the photocatalytic and the biological oxidation.

Authors+Show Affiliations

Departmento de Ingeniería Química, Universidad de Almería, 04120 Almería, Spain.No affiliation info availableNo 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

19059625

Citation

Ballesteros Martín, M M., et al. "Degradation of a Four-pesticide Mixture By Combined photo-Fenton and Biological Oxidation." Water Research, vol. 43, no. 3, 2009, pp. 653-60.
Ballesteros Martín MM, Sánchez Pérez JA, Casas López JL, et al. Degradation of a four-pesticide mixture by combined photo-Fenton and biological oxidation. Water Res. 2009;43(3):653-60.
Ballesteros Martín, M. M., Sánchez Pérez, J. A., Casas López, J. L., Oller, I., & Malato Rodríguez, S. (2009). Degradation of a four-pesticide mixture by combined photo-Fenton and biological oxidation. Water Research, 43(3), 653-60. https://doi.org/10.1016/j.watres.2008.11.020
Ballesteros Martín MM, et al. Degradation of a Four-pesticide Mixture By Combined photo-Fenton and Biological Oxidation. Water Res. 2009;43(3):653-60. PubMed PMID: 19059625.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Degradation of a four-pesticide mixture by combined photo-Fenton and biological oxidation. AU - Ballesteros Martín,M M, AU - Sánchez Pérez,J A, AU - Casas López,J L, AU - Oller,I, AU - Malato Rodríguez,S, Y1 - 2008/11/27/ PY - 2008/07/30/received PY - 2008/11/05/revised PY - 2008/11/15/accepted PY - 2008/12/9/pubmed PY - 2009/3/26/medline PY - 2008/12/9/entrez SP - 653 EP - 60 JF - Water research JO - Water Res VL - 43 IS - 3 N2 - Complete degradation of a pesticide mixture by a combination of a photo-Fenton pretreatment and an activated-sludge batch reactor is demonstrated. Four commercial pesticides, Laition, Metasystox, Sevnol and Ultracid were chosen for this experiment. The active ingredients are, respectively, dimethoate, oxydemeton-methyl, carbaryl and methidathion. The original pesticide concentration was 200 mg L(-1). Biotreatment began after 31% photocatalytic mineralization, which after 5 h in a 6-L stirred batch-mode tank reactor with non-acclimated activated sludge, leaves the photo-Fenton effluent completely degraded. This biotreatment time is shorter than commonly found in municipal wastewater treatment plants (approximately 8-10 h). Therefore, the combined process is effective for rapid pesticide degradation in wastewater with complete removal of parent compounds and the associated DOC concentration. Nonetheless, assessment of this technology should take into account higher pesticide concentrations and how this factor affects both the photocatalytic and the biological oxidation. SN - 0043-1354 UR - https://www.unboundmedicine.com/medline/citation/19059625/Degradation_of_a_four_pesticide_mixture_by_combined_photo_Fenton_and_biological_oxidation_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0043-1354(08)00562-9 DB - PRIME DP - Unbound Medicine ER -