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- Title
Anodic Oxidation as Green Alternative for Removing Diethyl Phthalate from Wastewater Using Pb/PbO<sub>2</sub> and Ti/SnO<sub>2</sub> Anodes.
- Authors
Vazquez-Gomez, Lourdes; de Battisti, Achille; Ferro, Sergio; Cerro, Monica; Reyna, Silvia; Martínez-Huitle, Carlos A.; Quiroz, Marco A.
- 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.
- Subjects
OXIDATION; DIETHYL phthalate; ELECTROLYSIS; SEWAGE; CHEMICAL reactions
- Publication
CLEAN: Soil, Air, Water, 2012, Vol 40, Issue 4, p408
- ISSN
1863-0650
- Publication type
Article
- DOI
10.1002/clen.201000357