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
Alejandro Moncayo-LassoNorberto Benítez

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 reag...Continue Reading

References

Jan 11, 2002·Environmental Science & Technology·M FukushimaS Nagao
Nov 26, 2003·Chemosphere·Christine A Murray, Simon A Parsons
Jul 29, 2005·Environmental Science & Technology·W BuchananM Drikas
Aug 30, 2006·Journal of Hazardous Materials·Puangrat Kajitvichyanukul, Nattapol Suntronvipart

❮ Previous
Next ❯

Citations

Mar 1, 2012·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Alejandro Moncayo-LassoCésar Pulgarin
May 25, 2010·Chemosphere·Anu Matilainen, Mika Sillanpää
Jun 5, 2015·Environmental Technology·María M MicóCarme Sans
Sep 29, 2011·Water Research·Fraser C KentGraham A Gagnon
Feb 14, 2014·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Marizú VelásquezHéctor D Mansilla
Aug 20, 2015·International Journal of Environmental Research and Public Health·Oyuna TsydenovaAgniya Batoeva

❮ Previous
Next ❯

Related Concepts

Related Feeds

Blood Clotting Disorders

Thrombophilia includes conditions with increased tendency for excessive blood clotting. Blood clotting occurs when the body has insufficient amounts of specialized proteins that make blood clot and stop bleeding. Here is the latest research on blood clotting disorders.