Application of advanced oxidation processes (AOP) from in situ electrogeneration H2O2 for the degradation of food dyes: Amaranth, Tartrazine, Brilliant Blue FCF and Fast Green

• Grant number: 11/06681-4
• Support type: Scholarships in Brazil - Doctorate
• Effective date (Start): June 01, 2011
• Effective date (End): August 31, 2014
• Field of knowledge: Engineering - Sanitary Engineering - Water Supply and Wastewater Treatment
• Principal Investigator: Marcos Roberto de Vasconcelos Lanza
• Grantee: Willyam Róger Padilha Barros
• Home Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Associated scholarship(s): 13/06682-6 - Synthesis and characterization of nanocatalysts in the application of gas diffusion electrodes for of hydrogen peroxide electrogeneration in situ, BE.EP.DR

Abstract

The aim of this project is to study the process of electrochemical degradation via direct anodic oxidation, cathodic electrogeneration via hydrogen peroxide (H2O2 and H2O2 / Fe (II)) and the two associated with the use of ozone and UV radiation (O3 / UV processes and O3 / UV / Fe (II)), four dyes used in food industry: Amaranth, Tartrazine, Brilliant Blue FCF and Fast Green. Additionally, it is intended to identify the possible intermediates formed during the degradation of these compounds to establish the mechanisms of degradation for each dye. The efficiency of the degradation processes, applied individually or in combination, will be evaluated by the kinetics of oxidation of dyes and byproducts, depending on the current density and / or the applied potential and the speed of flow within the reactor and the ozone content , taking into account technological and economic aspects involved in each process and / or operational condition of the treatments used.

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BARROS, WILLYAM R. P.; STETER, JULIANA R.; LANZA, MARCOS R. V.; TAVARES, ANA C. Catalytic activity of Fe3-xCuxO4 (0 <= x <= 0.25) nanoparticles for the degradation of Amaranth food dye by heterogeneous electro-Fenton process. APPLIED CATALYSIS B-ENVIRONMENTAL, v. 180, p. 434-441, JAN 2016. Web of Science Citations: 31.

BARROS, WILLYAM R. P.; ERENO, THAIS; TAVARES, ANA C.; LANZA, MARCOS R. V. In Situ Electrochemical Generation of Hydrogen Peroxide in Alkaline Aqueous Solution by using an Unmodified Gas Diffusion Electrode. CHEMELECTROCHEM, v. 2, n. 5, p. 714-719, MAY 13 2015. Web of Science Citations: 36.

STETER, JULIANA R.; BARROS, WILLYAM R. P.; LANZA, MARCOS R. V.; MOTHEO, ARTUR J. Electrochemical and sonoelectrochemical processes applied to amaranth dye degradation. Chemosphere, v. 117, p. 200-207, DEC 2014. Web of Science Citations: 40.

BARROS, WILLYAM R. P.; BORGES, MICHELLE P.; STETER, JULIANA R.; FORTI, JULIANE C.; ROCHA, ROBSON S.; LANZA, MARCOS R. V. Degradation of Dipyrone by Electrogenerated H2O2 Combined with Fe2+ Using a Modified Gas Diffusion Electrode. Journal of the Electrochemical Society, v. 161, n. 14, p. H867-H873, 2014. Web of Science Citations: 3.

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

BARROS, Willyam Róger Padilha. Electrochemical degradation of the amaranth and tartrazine food dyes using H2O2 electrogenerated in situ in modified gas diffusion electrode(GDE) with copper (II) and cobalt (II) phthalocyanine. 2014. Doctoral Thesis - Universidade de São Paulo (USP). Instituto de Química de São Carlos São Carlos.