Rodríguez Vega, SergioLorenzo Fernández, DavidSantos López, AuroraRomero Salvador, Arturo2024-02-072024-02-072020-02-010301-479710.1016/j.jenvman.2019.109926https://hdl.handle.net/20.500.14352/99914Treatment of polluted wastewaters from industrial activities has become a source of major concern for the environment. In this work, real wastewater from a physico-chemical (WWFQ) treatment was tested through different oxidation technologies: Fenton and Fenton-like reagent and persulfate activated by NaOH and Fe(II). Oxidation reactions with Fenton's reagent were carried out in a 0.25 L batch reactor at 25 °C by adding either Fe(II) or Fe(III) and H2O2 to an aqueous solution of wastewater, whose pH was previously adjusted to 2 or 3. Iron concentration ranging from 25 to 100 mg/L and peroxide concentration from 2500 to 10000 mg/L were used. The total organic carbon slightly decreased when WWFQ was treated. Moreover, better results were obtained when Fe(II) was used than Fe(III). Both iron concentration and oxidant dosage had a positive influence on the chemical oxygen demand (COD) removal, until an asymptotic value of 30% was obtained. Oxidation of pollutants contained in WWFQ was studied with persulfate (18.4–294 mM) activated with NaOH and Fe(II) (36.8–588 mM). Again, a positive influence of both persulfate and NaOH was observed, although a similar asymptotic COD value was observed. This parallelism between both technologies confirms recalcitrant compounds were obtained.engjournal articlehttps://www-sciencedirect-com.bucm.idm.oclc.org/science/article/pii/S0301479719316445open access66.0FentonPersulfateNaOH activationIndustrial wastewaterFenton-likeIngeniería química3303 Ingeniería y Tecnología Químicas