199 research outputs found
Solar photo-Fenton at mild conditions to treat a mixture of six emerging pollutants
The applicability of photo-Fenton to degrade a mixture of emerging pollutants (EPs) namely amoxycillin,
acetaminophen, acetemiprid, caffeine, clofibric acid and carbamazepine has been studied at different scenarios.
At high concentrations, acidic photo-Fenton was able to achieve a fast removal of the EPs.
Although, complete mineralization was not reached, the toxicity of the solution was decreased according
to the respiration of activated sludge and luminescence of Vibrio fischeri assays, although according to this
last assay a transitory enhancement of the toxicity was found, attributable to the formation of toxic byproducts
such as phenols, chlorophenols and chlorinated pyrydines. Experiments carried out with 5 mg/l
of each EP showed that at neutral media the process was two orders of magnitude less efficient than at
acidic pH, although it was still able to remove the EPs. The aqueous matrix has a remarkable effect on the
process as the presence of humic acids increased the reaction rate and inorganic salts played an inhibitory
role. Finally, experiments performed with 10 lg/l of each EP showed that under those experimental conditions
nearly complete removal of the EPs was reached with neutral photo-Fenton after 120 min of irradiation;
in this case, humic substances played a disfavorable role.We want to thank the financial support of Spanish Ministerio de Ciencia e Innovacion (CTQ 2009-13459-0O5-03) and (CTQ 2009-3459-C05-01).Bernabeu GarcĂa, A.; Palacios Guillem, S.; Vicente Candela, R.; Vercher PĂ©rez, RF.; Malato RodrĂguez, S.; Arques Sanz, A.; Amat Payá, AM. (2012). Solar photo-Fenton at mild conditions to treat a mixture of six emerging pollutants. Chemical Engineering Journal. 198:65-72. https://doi.org/10.1016/j.cej.2012.05.056S657219
Removal of nitrate and sulphate from biologically treated municipal wastewater by electrocoagulation
Electro-oxidation of the dye azure B: kinetics, mechanism, and by-products
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