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Advanced treatment of urban wastewater by UV-C/free chlorine process: Micro-pollutants removal and effect of UV-C radiation on trihalomethanes formation
dc.contributor.author | Cerreta, Giusy | |
dc.contributor.author | Roccamante, Melina Antonella | |
dc.contributor.author | Plaza Bolaños, Patricia | |
dc.contributor.author | Oller Alberola, Isabel | |
dc.contributor.author | Agüera López, Ana María | |
dc.contributor.author | Malato Rodríguez, Sixto | |
dc.contributor.author | Rizzo, Luigi | |
dc.date.accessioned | 2024-01-31T11:32:58Z | |
dc.date.available | 2024-01-31T11:32:58Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Water Research 169 (2020) 115220 | es_ES |
dc.identifier.issn | 0043-1354 | |
dc.identifier.uri | http://hdl.handle.net/10835/15629 | |
dc.description.abstract | The effect of the UV-C/free chlorine (FC) process on the removal of contaminants of emerging concern (CECs) from real urban wastewater as well as the effect of UV-C radiation on the formation of trihalomethanes (THMs) compared to FC process alone was investigated. Unlike of FC process, UV-C/FC was really effective in the degradation of the target CECs (carbamazepine (CBZ), diclofenac, sulfamethoxazole and imidacloprid) in real wastewater (87% degradation of total CECs within 60 min, QUVC = 1.33 kJ/L), being CBZ the most refractory one (49.5%, after 60 min). The UV-C radiation significantly affected the formation of THMs. THMs concentration (mainly chloroform) was lower in UV-C/FC process after 30 min treatment (<1 μg/L = limit of quantification (LOQ)) than in FC process in dark (2.3 μg/L). Noteworthy, while in FC treated wastewater chloroform concentration increased after treatment, UV-C/FC process resulted in a significant decrease (residual concentrations below the LOQ), even after 24 h and 48 h post-treatment incubation. The formation of radicals due to UV-C/FC process can reduce THMs compared to chlorination process, because part of FC reacts with UV-C radiation to form radicals and it is no longer available to form THMs. These results are encouraging in terms of possible use of UV-C/FC process as advanced treatment of urban wastewater even for possible effluent reuse. | es_ES |
dc.language.iso | en | es_ES |
dc.publisher | Elsevier | es_ES |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Advanced oxidation processes | es_ES |
dc.subject | Contaminants of emerging concern | es_ES |
dc.subject | Disinfection by products | es_ES |
dc.subject | Pesticides | es_ES |
dc.subject | Pharmaceuticals | es_ES |
dc.subject | Wastewater reuse | es_ES |
dc.title | Advanced treatment of urban wastewater by UV-C/free chlorine process: Micro-pollutants removal and effect of UV-C radiation on trihalomethanes formation | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S0043135419309947 | es_ES |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es_ES |
dc.identifier.doi | 10.1016/j.watres.2019.115220 |