2026-06-02T03:40:58Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/999142024-08-19T23:48:45Zcom_20.500.14352_14col_20.500.14352_15

Comparison of real wastewater oxidation with Fenton/Fenton-like and persulfate activated by NaOH and Fe(II) Rodríguez Vega, Sergio Lorenzo Fernández, David Santos López, Aurora Romero Salvador, Arturo 66.0 Fenton Persulfate NaOH activation Industrial wastewater Fenton-like Ingeniería química 3303 Ingeniería y Tecnología Químicas Treatment 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. Comunidad de Madrid Ministerio de Economía y Competitividad (España) Depto. de Ingeniería Química y de Materiales Fac. de Ciencias Químicas TRUE pub 2024-02-07T11:40:56Z 2024-02-07T11:40:56Z 2020 journal article VoR https://hdl.handle.net/20.500.14352/99914 0301-4797 10.1016/j.jenvman.2019.109926 eng CARESOIL (S2018/EMT-4317) CTM2016- 77151 CTM2013-43794-R Rodríguez, Sergio, et al. «Comparison of Real Wastewater Oxidation with Fenton/Fenton-like and Persulfate Activated by NaOH and Fe(II)». Journal of Environmental Management, vol. 255, febrero de 2020, p. 109926. https://doi.org/10.1016/j.jenvman.2019.109926. restricted access application/pdf Elsevier