| Full text | |
| Author(s): |
Paz, Edson C.
[1, 2]
;
Pinheiro, Victor S.
[2]
;
Sousa Joca, Jhonny Frank
[2]
;
Sotana de Souza, Rafael Augusto
[3]
;
Gentil, Tuani C.
[2]
;
Lanza, Marcos R. V.
[4, 5]
;
Moises de Oliveira, Hueder Paulo
[2]
;
Pereira Neto, Ana Maria
[3]
;
Gaubeur, Ivanise
[2]
;
Santos, Mauro C.
[2]
Total Authors: 10
|
| Affiliation: | [1] Inst Fed Educ Ciencia & Tecnol Maranhao IFMA, Campus Acailandia, R Projetada S-N, BR-65930000 Acailandia, MA - Brazil
[2] Univ Fed ABC UFABC, CCNH, Rua Santa Adelia 166, BR-09210170 Santo Andre, SP - Brazil
[3] Univ Fed ABC UFABC, Ctr Engn Modelagem & Ciencias Socials Aplicadas C, Rua Santa Adelia 166, BR-09210170 Santo Andre, SP - Brazil
[4] Univ Sao Paulo, IQSC, Caixa Postal 780, BR-13566590 Sao Carlos, SP - Brazil
[5] UNESP, Inst Quim, Inst Natl Tecnol Altenat Deteccao Avaliacao Toxic, BR-14800900 Araraquara, SP - Brazil
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | Chemosphere; v. 239, JAN 2020. |
| Web of Science Citations: | 0 |
| Abstract | |
The objectives of this study were to determine the viability of removing Orange II (OII) dye by simulated solar photoelectro-Fenton (SSPEF) and to evaluate the stability of a WO2.72/Vulcan XC72 gas diffusion electrode (GDE) and thus determine its best operating parameters. The GDE cathode was combined with a BDD anode for decolorization and mineralization of 350 mL of 0.26 mM OII by anodic oxidation with electrogenerated H2O2 (AO-H2O2), electro-Fenton (EF) and photoelectro-Fenton (PEF) at 100, 150 and 200 mA cm(-2) and SSPEF at 150 mA cm(-2). The GDE showed successful operation for electrogeneration, good reproducibility and low leaching of W. Decolorization and OII decay were directly proportional to the current density (j). AO-H2O2 had a reduced performance that was only half of the SSPEF, PEF and EF treatments. The mineralization efficiency was in the following order: AO-H2O2 < EF < PEF approximate to SSPEF. This showed that the GDE, BDD anode and light radiation combination was advantageous and indicated that the SSPEF process is promising with both a lower cost than using UV lamps and simulating solar photoelectro-Fenton process. The PEF process with the lowest j (100 mA cm(-2)) showed the best performance-mineralization current efficiency. (C) 2019 Elsevier Ltd. All rights reserved. (AU) | |
| FAPESP's process: | 16/00819-8 - Controlled Synthesis of Nanomaterials based on Pd and Pt: Electrocatalytic Activity and Stability |
| Grantee: | Luanna Silveira Parreira |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 14/50945-4 - INCT 2014: National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactivies |
| Grantee: | Maria Valnice Boldrin |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 17/26288-1 - Hybrid electrocatalysts based on Pd, Pt and Sn nanoparticles, and on ceria nanorods for application in fuel cells |
| Grantee: | Victor dos Santos Pinheiro |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 15/10314-8 - Nanostructures for Phenol, Ciprofloxacin and 17±-ethinylestradiol Degradation |
| Grantee: | Mauro Coelho dos Santos |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 17/22976-0 - Development of palladium and niobium nanoelectrocatalysts for alkaline direct ethanol fuel cells |
| Grantee: | Felipe de Moura Souza |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 17/10118-0 - Study and application of electrochemical technology for the analysis and degradation of endocrine interferents: materials, sensors, processes and scientific dissemination |
| Grantee: | Marcos Roberto de Vasconcelos Lanza |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 17/21846-6 - Nanostructures for environmental remediation and power generation from renewable sources |
| Grantee: | Mauro Coelho dos Santos |
| Support Opportunities: | Program for Research on Bioenergy (BIOEN) - Regular Program Grants |