Anodic Oxidation as Green Alternative for Removing Diethyl Phthalate from Wastewater Using Pb/PbO2 and Ti/SnO2 Anodes
| Autor: | Silvia Reyna, Lourdes Vazquez-Gomez, Carlos A. Martínez-Huitle, M.A. Quiroz, Monica Cerro, Achille De Battisti, Sergio Ferro |
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| Rok vydání: | 2012 |
| Předmět: |
Electrolysis
Aqueous solution Chemistry Inorganic chemistry Wastewater treatment Environment Electrochemistry Diethyl phthalate Solid-phase microextraction Pollution law.invention Anode chemistry.chemical_compound Wastewater law Biorefractory pollutants Environmental Chemistry Current density Water Science and Technology |
| Zdroj: | CLEAN - Soil, Air, Water. 40:408-415 |
| ISSN: | 1863-0650 |
| Popis: | 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 byproducts 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 (20‐40mAcm � 2 )a t 408C. The results obtained demonstrated that the environmental electrochemical methods can be a feasible alternative for the wastewater treatment containing hazardous phthalates. |
| Databáze: | OpenAIRE |
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