2021-04-162014-12-010021891X15728838WOS;000344778900020SCOPUS;2-s2.0-84939879687http://hdl.handle.net/10784/29360In this work, the Box–Behnken experimental design and the surface response methodology were applied for the optimization of the operational conditions of the electro-catalytic degradation of wastewaters, resulting from a local textile industry. The experiments were carried out in a laboratory scale batch cell reactor, with monopolar configuration, and electrodes made of boron-doped diamond (anode) and titanium (cathode). The multifactorial experimental design included the following variables: current density (i: 5–10 ?mA/cm2), pH (3–7), and submerged cathode area (CA: 8–24 ?cm2). To determine the process efficiency, the degradation percentage of: the chemical oxygen demand (%DCOD), the total organic carbon (%DTOC) and the color (%DC) were defined as response variables. The following optimal conditions for the electro-oxidation (EO) process were obtained: i ?= ?10 ?mA/cm2, pH = 3 and CA ?= ?16 ?cm2, reaching ca. 92 ?% of DC, 37 ?% of DCOD and 31 ?% of DTOC. The electro-Fenton (EF) and photo-electro-Fenton (PEF) processes were also evaluated at EO optimal conditions. For the EF process, with addition of iron (0.3 ?mM), the %DC, %DCOD and %DTOC was enhanced to 95, 52 and 45 ?%, respectively. For the PEF process (UV ?= ?365 ?nm), it was possible to reach 98 ?%DC, 56 ?%DCOD and 48 ?%DTOC. © 2014, Springer Science+Business Media Dordrecht.enghttps://v2.sherpa.ac.uk/id/publication/issn/0021-891XCathodesChemical oxygen demandEffluentsElectrooxidationOrganic carbonStatisticsTextile industryTextilesWastewater treatmentBoron doped diamondCatalytic degradationElectro-fentonELectrochemical methodsOperational conditionsStatistical optimizationSurface response methodologiesTextile effluentIndustrial water treatmentinfo:eu-repo/semantics/article2021-04-16GilPavas, EdisonMedina, JoseDobrosz-Gomez, IzabelaAngel Gomez-Garcia, Miguel10.1007/s10800-014-0767-y