ResumenSe evaluó la remoción de carbono orgánico total (COT) presente en un efluente generado por la industria de procesamiento de subproductos de origen animal (rendering), mediante fotocatálisis (foto-Fenton) y adsorción con carbón activado. El efluente considerado fue el vapor condensado de cocción cuya elevada carga contaminante, hace que tratamientos convencionales tales como los biológicos y químicos sean insuficientes o económicamente inviables. Para evaluar el efecto de las variables de proceso, concentración de Fe(II) y dosis de agente oxidante (H2O2), se utilizó la metodología de superficie de respuesta. En el estudio de adsorción se consideró el efecto del pH, dosis de adsorbente y tiempo de contacto. Para el tratamiento fotocatalítico se alcanzó una remoción del 69.2% de COT, mientras que para el proceso de adsorción fue del 77.9%. Después de esto, se evaluó la remoción de COT de dos sistemas acoplados. Para uno de los sistemas, el efluente fue pre tratado mediante adsorción y sometido posteriormente al tratamiento fotocatalítico donde se alcanzó una degradación global del 91.9%. Esta sinergia entre los procesos de adsorción y foto-Fenton, aparecen como una alternativa viable para el tratamiento de este tipo de efluentes industriales. Palabras clave: adsorción; foto-Fenton; procesamiento de subproductos avícolas; sistema acoplado adsorción-fotocatálisis; vapor condensado de cocción Photocatalysis/Adsorption for Total Organic Carbon Removal present in Condensed Steam Cooking generated in Poultry By-products Treatment AbstractIn this paper the removal of total organic carbon (TOC) present in an effluent generated by the rendering industry was evaluated, by photocatalysis (photo-Fenton) and activated carbon adsorption. The effluent considered in the study was the condensed steam cooking that has high environmental burdens so conventional biological and chemical treatments are insufficient or are economically unviable. To evaluate the effect of process variables, concentration of Fe (II) and dose of oxidizing agent (H2O2), the response surface methodology was used. In the adsorption study, the effect of pH, adsorbent dose and contact time was considered. For photocatalytic treatment the TOC removal percentage obtained was 69.2%, while for the adsorption process was 77.9%. After that, the TOC removal of two coupled systems was evaluated. For one of the systems, the effluent was pretreated by adsorption and subsequently subjected to photocatalytic treatment, reaching an overall degradation of 91.9%. This synergy between adsorption and photo-Fenton processes appears as a viable option for the treatment of this type of industrial effluents.
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