ISSN: 2578-4846
Authors: Teodosio JR, Brandão YB*, Oliveira DC, Dias FFS, Moraes CM, Araújo LA, Oliveira Júnior DC, Oliveira JGC and Benachour M
The objective of the present work was to study a synthetic solution containing an initial hydroquinone concentration (C0) of 500 mg L–1 by using the advanced oxidation process (AOP) in a batch reactor. Furthermore, the aim was to propose an optimization process based on hydroquinone degradation (HD) and mineralization of the total organic carbon (TOC) by using hydrogen peroxide as a source of free hydroxyl radicals (•OH). In designing was used to optimize the process, initial hydrogen potential (pH), temperature of the liquid effluent (T), air flow supply (QAF), and stoichiometric molar ratio of organic toxic compounds to hydrogen peroxide (RH) on the process of degradation and TOC conversion of toxic organic compounds. The initial hydroquinone concentration was quantified and identified by high-performance liquid chromatography (HPLC). The optimal conditions for a given HQ degradation (100%) and TOC conversion (>80%) were identified. The kinetic model used to describe the profile of the TOC conversion remaining for the HQ was the lumped kinetic model (LKM), used to determine the kinetic constants of the reaction and provide an accurate determination of the residual fraction of organic compounds.
Keywords: Hydroquinone; AOPs; HPLC, TOC; LKM
