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Effect of pesticide concentration on the degradation process by combined solar photo-Fenton and biological treatment.
Water Res. 2009 Aug; 43(15):3838-48.WR

Abstract

The influence of pesticide concentration, expressed as dissolved organic carbon (DOC), on combined solar photo-Fenton and biological oxidation treatment was studied using wastewater containing a mixture of five commercial pesticides, Vydate, Metomur, Couraze, Ditumur and Scala. Two initial DOC concentrations, 200 mg L(-1) and 500 mg L(-1) were assayed. Variation in biodegradability with photocatalytic treatment intensity was tested using Pseudomonas putida. Thus the mineralisation required for combining with biodegradation of intermediates by activated sludge was 33% and 55% at 200 mg L(-1) and 500 mg L(-1), respectively. Biotreatment was carried out in a stirred tank in sequencing batch reactor (SBR) mode. As revealed by the biodegradation kinetics, intermediates generated at the higher pesticide concentration caused lower carbon removal rates in spite of the longer photo-Fenton treatment time applied. One strategy for treating water with high concentrations of pesticides and overcoming the low biodegradability of photo-Fenton intermediates is to mix it with a biodegradable carbon source before biological oxidation. This combination of photo-Fenton and acclimatized activated sludge in several SBR cycles led to complete biodegradation of a concentrated pesticide solution of 500 mg L(-1) DOC in approximately 5h with a carbon removal efficiency of 90%.

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

19560181

Citation

Ballesteros Martín, M M., et al. "Effect of Pesticide Concentration On the Degradation Process By Combined Solar photo-Fenton and Biological Treatment." Water Research, vol. 43, no. 15, 2009, pp. 3838-48.
Ballesteros Martín MM, Sánchez Pérez JA, García Sánchez JL, et al. Effect of pesticide concentration on the degradation process by combined solar photo-Fenton and biological treatment. Water Res. 2009;43(15):3838-48.
Ballesteros Martín, M. M., Sánchez Pérez, J. A., García Sánchez, J. L., Casas López, J. L., & Malato Rodríguez, S. (2009). Effect of pesticide concentration on the degradation process by combined solar photo-Fenton and biological treatment. Water Research, 43(15), 3838-48. https://doi.org/10.1016/j.watres.2009.05.021
Ballesteros Martín MM, et al. Effect of Pesticide Concentration On the Degradation Process By Combined Solar photo-Fenton and Biological Treatment. Water Res. 2009;43(15):3838-48. PubMed PMID: 19560181.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of pesticide concentration on the degradation process by combined solar photo-Fenton and biological treatment. AU - Ballesteros Martín,M M, AU - Sánchez Pérez,J A, AU - García Sánchez,J L, AU - Casas López,J L, AU - Malato Rodríguez,S, Y1 - 2009/05/27/ PY - 2009/03/23/received PY - 2009/05/13/revised PY - 2009/05/16/accepted PY - 2009/6/30/entrez PY - 2009/6/30/pubmed PY - 2009/8/8/medline SP - 3838 EP - 48 JF - Water research JO - Water Res VL - 43 IS - 15 N2 - The influence of pesticide concentration, expressed as dissolved organic carbon (DOC), on combined solar photo-Fenton and biological oxidation treatment was studied using wastewater containing a mixture of five commercial pesticides, Vydate, Metomur, Couraze, Ditumur and Scala. Two initial DOC concentrations, 200 mg L(-1) and 500 mg L(-1) were assayed. Variation in biodegradability with photocatalytic treatment intensity was tested using Pseudomonas putida. Thus the mineralisation required for combining with biodegradation of intermediates by activated sludge was 33% and 55% at 200 mg L(-1) and 500 mg L(-1), respectively. Biotreatment was carried out in a stirred tank in sequencing batch reactor (SBR) mode. As revealed by the biodegradation kinetics, intermediates generated at the higher pesticide concentration caused lower carbon removal rates in spite of the longer photo-Fenton treatment time applied. One strategy for treating water with high concentrations of pesticides and overcoming the low biodegradability of photo-Fenton intermediates is to mix it with a biodegradable carbon source before biological oxidation. This combination of photo-Fenton and acclimatized activated sludge in several SBR cycles led to complete biodegradation of a concentrated pesticide solution of 500 mg L(-1) DOC in approximately 5h with a carbon removal efficiency of 90%. SN - 1879-2448 UR - https://www.unboundmedicine.com/medline/citation/19560181/Effect_of_pesticide_concentration_on_the_degradation_process_by_combined_solar_photo_Fenton_and_biological_treatment_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0043-1354(09)00332-7 DB - PRIME DP - Unbound Medicine ER -