Enhancing industrial swine slaughterhouse wastewater treatment: Optimization of electrocoagulation technique and operating mode

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dc.contributor.authorSandoval, Miguel A.
dc.contributor.authorCoreno, Oscar
dc.contributor.authorGarcia, Veronica
dc.contributor.authorSalazar-Gonzalez, Ricardo
dc.date.accessioned2025-01-20T17:11:06Z
dc.date.available2025-01-20T17:11:06Z
dc.date.issued2024
dc.description.abstractIn this study, industrial swine slaughterhouse effluents were treated by an electrocoagulation process (EC) with aluminum and iron electrodes. Batch and semicontinuous operation were performed. EC tests were carried out in batch operating mode for 2.5 h using fixed current densities (j = 10, 20, and 30 mA cm-2) in sulfate and chloride media. At the laboratory scale, higher TOC removal efficiencies were observed using aluminum electrodes at 20 mA cm-2 without the addition of a supporting electrolyte (82.7%). However, the EC process with Fe electrodes consumed 43.6% less energy.After the best operating parameters were found at the laboratory scale, the process was tested as a semi -continuous prepilot process using a filter-press FM01-LC-type electrochemical reactor equipped with flat plate aluminum electrodes. In this stage, current densities and mean linear flow rates were assessed. The highest TOC removal efficiency of 72.7% (i.e., residual TOC concentration of 85.18 mg L-1) in the semicontinuous process was achieved by the application of j = 25 mA cm-2 and ur = 0.64 cm s- 1 with an energy consumption of 19.80 kW h m- 3. The residual COD and TP concentrations met the international standard limits. Moreover, complete decoloration and disinfection were accomplished. EDXRF, SEM, EDAX, XRD, and FTIR analyses indicated that pollutants were removed by adsorption on aluminum/iron hydroxides/oxyhydroxides.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.jenvman.2023.119556
dc.identifier.eissn1095-8630
dc.identifier.issn0301-4797
dc.identifier.urihttps://doi.org/10.1016/j.jenvman.2023.119556
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/91158
dc.identifier.wosidWOS:001122440600001
dc.language.isoen
dc.revistaJournal of environmental management
dc.rightsacceso restringido
dc.subjectElectrocoagulation
dc.subjectSwine slaughterhouse wastewater
dc.subjectSemicontinuous operating mode
dc.subjectFilter -press reactor
dc.subjectTOC removal
dc.subjectPhosphorous removal
dc.subject.ods06 Clean Water and Sanitation
dc.subject.odspa06 Agua limpia y saneamiento
dc.titleEnhancing industrial swine slaughterhouse wastewater treatment: Optimization of electrocoagulation technique and operating mode
dc.typeartículo
dc.volumen349
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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