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Degradation of DBPs' precursors in river water before and after slow sand filtration by photo-Fenton process at pH 5 in a solar CPC reactor.
Water Res. 2008 Sep; 42(15):4125-32.WR

Abstract

The generation of disinfection by-products during water treatment can be controlled by reducing the levels of precursor species prior to the chlorination step. The Natural Organic Matter (NOM) is the principal organic precursor and conventional removal of pollutants such as coagulation, flocculation and filtration do not guarantee the total NOM removal. In this study the degradation of NOM model compounds (dihydroxy-benzene) as well as the removal of NOM from river water via photo-Fenton process in a CPC solar photo-reactor is presented. The effect of solar activated photo-Fenton reagent at pH 5.0 before and after a slow sand filtration (SSF) in waters containing natural iron species is investigated and the details reported. The results showed that the total transformation of dihydroxy-benzene compounds along a mineralization higher than 80% was obtained. The mineralization of the organic compounds dissolved in natural water was higher than in Milli-Q water, suggesting that the aqueous organic and inorganic components (metals, humic acids and photoactive species) positively affect the photocatalytic process. When 1.0mg/L of Fe(3+) is added to the system, the photo-Fenton degradation was improved. Therefore the photo-Fenton reagent could be an interesting complement to other processes for NOM removal. Comparing the response of two rivers as media for the organic compounds degradation it was observed that the NOM photo-degradation rate depends of the water composition.

Authors+Show Affiliations

Universidad del Valle, Facultad de Ciencias Naturales y Exactas, Departamento de Química, Grupo de Investigación en Procesos Avanzados de Oxidación (GAOX), A.A. 25360, Cali, Colombia.No affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

18718626

Citation

Moncayo-Lasso, Alejandro, et al. "Degradation of DBPs' Precursors in River Water Before and After Slow Sand Filtration By photo-Fenton Process at pH 5 in a Solar CPC Reactor." Water Research, vol. 42, no. 15, 2008, pp. 4125-32.
Moncayo-Lasso A, Pulgarin C, Benítez N. Degradation of DBPs' precursors in river water before and after slow sand filtration by photo-Fenton process at pH 5 in a solar CPC reactor. Water Res. 2008;42(15):4125-32.
Moncayo-Lasso, A., Pulgarin, C., & Benítez, N. (2008). Degradation of DBPs' precursors in river water before and after slow sand filtration by photo-Fenton process at pH 5 in a solar CPC reactor. Water Research, 42(15), 4125-32. https://doi.org/10.1016/j.watres.2008.07.014
Moncayo-Lasso A, Pulgarin C, Benítez N. Degradation of DBPs' Precursors in River Water Before and After Slow Sand Filtration By photo-Fenton Process at pH 5 in a Solar CPC Reactor. Water Res. 2008;42(15):4125-32. PubMed PMID: 18718626.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Degradation of DBPs' precursors in river water before and after slow sand filtration by photo-Fenton process at pH 5 in a solar CPC reactor. AU - Moncayo-Lasso,Alejandro, AU - Pulgarin,César, AU - Benítez,Norberto, Y1 - 2008/07/19/ PY - 2008/06/02/received PY - 2008/06/24/revised PY - 2008/07/10/accepted PY - 2008/8/23/pubmed PY - 2009/1/27/medline PY - 2008/8/23/entrez SP - 4125 EP - 32 JF - Water research JO - Water Res VL - 42 IS - 15 N2 - The generation of disinfection by-products during water treatment can be controlled by reducing the levels of precursor species prior to the chlorination step. The Natural Organic Matter (NOM) is the principal organic precursor and conventional removal of pollutants such as coagulation, flocculation and filtration do not guarantee the total NOM removal. In this study the degradation of NOM model compounds (dihydroxy-benzene) as well as the removal of NOM from river water via photo-Fenton process in a CPC solar photo-reactor is presented. The effect of solar activated photo-Fenton reagent at pH 5.0 before and after a slow sand filtration (SSF) in waters containing natural iron species is investigated and the details reported. The results showed that the total transformation of dihydroxy-benzene compounds along a mineralization higher than 80% was obtained. The mineralization of the organic compounds dissolved in natural water was higher than in Milli-Q water, suggesting that the aqueous organic and inorganic components (metals, humic acids and photoactive species) positively affect the photocatalytic process. When 1.0mg/L of Fe(3+) is added to the system, the photo-Fenton degradation was improved. Therefore the photo-Fenton reagent could be an interesting complement to other processes for NOM removal. Comparing the response of two rivers as media for the organic compounds degradation it was observed that the NOM photo-degradation rate depends of the water composition. SN - 0043-1354 UR - https://www.unboundmedicine.com/medline/citation/18718626/Degradation_of_DBPs'_precursors_in_river_water_before_and_after_slow_sand_filtration_by_photo_Fenton_process_at_pH_5_in_a_solar_CPC_reactor_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0043-1354(08)00290-X DB - PRIME DP - Unbound Medicine ER -