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Anodic Oxidation as Green Alternative for Removing Diethyl Phthalate from Wastewater Using Pb/PbO2 and Ti/SnO2 Anodes |
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| Authors: | Lourdes Vazquez‐Gomez Achille de Battisti Sergio Ferro Monica Cerro Silvia Reyna Carlos A. Martínez‐Huitle Marco A. Quiroz |
| Affiliation: | 1. Dipartimento di Biologia e Evoluzione, Università degli Studi di Ferrara, Ferrara, Italy;2. Departamento de Ciencias Químico Biológicas, Universidad de las Américas–Puebla, Cholula, Puebla, Mexico;3. Centro de Ciências Exatas e da Terra, Instituto de Química, Universidade Federal do Rio Grande do Norte, Natal, Brazil |
| Abstract: | The electrochemical oxidation (EO) of diethyl phthalate (DEP) in aqueous solution was studied at Pb/PbO2 and Ti/SnO2 anode materials under galvanostatic‐experimental conditions. Results obtained clearly demonstrated that the anode plays a significant role for the optimization of the oxidation process, deciding the mechanisms and by‐products formed. DEP and by‐products of oxidation were also analyzed during various stages of the electrolysis reaction by HPLC and GC/MS techniques. Before the analysis by GC/MS technique, the samples were treated by solid phase microextraction (SPME) in order to concentrate the compounds from the reaction solution and identify all electrolysis intermediates. Current efficiencies (instantaneous current efficiency; ICE and total current efficiency; TCE) achieved during EO experiments were dependent on anode used and current density (20–40 mA cm?2) at 40°C. The results obtained demonstrated that the environmental electrochemical methods can be a feasible alternative for the wastewater treatment containing hazardous phthalates. |
| Keywords: | Biorefractory pollutants Diethyl phthalate Electrochemistry Environment Wastewater treatment |