Influence of the structure of azo dyes on the degradation kinetics using photo-Fenton and zero valent iron processes and on toxicity

• Grant number: 10/13874-0
• Support Opportunities: Scholarships in Brazil - Master
• Start date: March 01, 2011
• End date: July 31, 2012
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Raquel Fernandes Pupo Nogueira
• Grantee: Thiago Henrique Gomes da Silva
• Host Institution: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil
• Associated research grant: 08/10449-7 - Assessment of occurrence, toxicity/genotoxicity and degradation processes of dyes in effluents and surface water, AP.TEM

Abstract

Dyes are synthetic organic compounds widely used in textile, food, cosmetics industry and others. These compounds have been developed to give color resisting to chemical and biological degradation. The effluent containing dyes can cause serious problems for the aquatic environment due to high absorption of light that interferes on the process of photosynthesis in the aquatic medium besides of being potentially carcinogenic, toxic and of low biodegradability. Among the processes for wastewater treatment, Advanced Oxidation Processes (AOP), characterized by the generation of hydroxyl radical, have been studied as an alternative to conventional treatment of effluents in the degradation of various organic pollutants. Thus, this project aims to compare the degradation of different azo dyes using photo-Fenton process with artificial and solar irradiation and the oxidation with zero valent iron process, and to assess the acute and chronic toxicities of the products formed. From these results, to assess the influence of substituents on the efficiency of degradation and toxicity of products formed. (AU)

Scientific publications

(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)

DE LUNA, LUIS A. V.; DA SILVA, THIAGO H. G.; PUPO NOGUEIRA, RAQUEL F.; KUMMROW, FABIO; UMBUZEIRO, GISELA A.. Aquatic toxicity of dyes before and after photo-Fenton treatment. JOURNAL OF HAZARDOUS MATERIALS, v. 276, p. 332-338, JUL 15 2014. (10/13874-0, 08/10449-7, 10/12991-3)

Academic Publications

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

SILVA, Thiago Henrique Gomes da. Influência da estrutura de corantes azo na cinética de degradação por processo foto-Feton e ferro zero e na toxicidade. 2012. Master's Dissertation - Universidade Estadual Paulista (Unesp). Instituto de Química. Araraquara Araraquara.