Synthesis and characterization of zeolites obtained from natural clays for dye adsorption

• Grant number: 12/08618-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: June 01, 2012
• End date: December 31, 2012
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Inorganic Chemistry
• Principal Investigator: Emerson Henrique de Faria
• Grantee: Priscila Martins Pereira Rodarte
• Host Institution: Pró-Reitoria Adjunta de Pesquisa e Pós-Graduação. Universidade de Franca (UNIFRAN). Franca , SP, Brazil

Abstract

Environmental problems have generated discussion and criticism due the increasing of industrial activity and therefore the contamination of natural waters. Many contaminants are detected in groundwater and surface water, among them are the colors, the target of this work. In this context, it is necessary to remove these stains prior to disposal of these effluents in aquatic environments. Many processes have been proposed for the removal of these dyes. For this purpose, has sought alternatives to the removal of coloring material from relatively inexpensive and simple methods. This project proposes to use a material of low cost and abundance in nature: the use of natural São Simão, Brazilian clays to synthesize zeolites. Brazil stands out in the extraction of clay, one of the kaolinite. The kaolinite in its natural form, not shown good cation exchange capacity, in this sense the modification thereof by means of heat treatments has generated good results. In this case, the ease to synthesize zeolite without raising the cost of the final product makes them even more important industrially. According to the classical definition, the term covers only crystalline aluminosilicate zeolites hydrated open structure, consisting of SiO4 tetrahedral and AlO4 linked together by oxygen atoms. The process of color removal used is adsorption. This process has been widely used, it has wide applicability in the treatment of sewage. Stands so in this case the use of zeolites obtained from natural clays, such as adsorbents for this process. Evaluating the advantages of the adsorption process in low-cost materials such as zeolites in relation to other processes and other adsorbents are also used for the treatment of industrial effluents. (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)

SALTARELLI, MICHELLE; DE FARIA, EMERSON H.; CIUFFI, KATIA J.; NASSAR, EDUARDO J.; TRUJILLANO, RAQUEL; RIVES, VICENTE; VICENTE, MIGUEL A.. Aminoiron(III)-porphyrin-alumina catalyst obtained by non-hydrolytic sol-gel process for heterogeneous oxidation of hydrocarbons. MOLECULAR CATALYSIS, v. 462, p. 114-125, JAN 2019. (16/50322-2, 16/01501-1, 13/19523-3, 12/08618-0)

VIEIRA, CARLOS ALEXANDRE; FERREIRA, BRENO F.; DA SILVA, ALEXANDRE FERNANDO; VICENTE, MIGUEL ANGEL; TRUJILLANO, RAQUEL; RIVES, VICENTE; CIUFFI, KATIA J.; NASSAR, EDUARDO J.; DE FARIA, EMERSON H.. Adsorption-Based Synthesis of Environmentally Friendly Heterogeneous Chromium(III) Catalysts for Oxidation Reactions into Kaolinite, Saponite, and Their Amine-Modified Derivatives. ACS APPLIED NANO MATERIALS, v. 1, n. 8, p. 3867-3877, AUG 2018. (16/50322-2, 16/01501-1, 12/08618-0, 13/19523-3)

PEREIRA, PRISCILA MARTINS; FERREIRA, BRENO FREITAS; OLIVEIRA, NATHALIA PAULA; NASSAR, EDUARDO JOSE; CIUFFI, KATIA JORGE; ANGEL VICENTE, MIGUEL; TRUJILLANO, RAQUEL; RIVES, VICENTE; GILA, ANTONIO; KORILI, SOPHIA; et al. Synthesis of Zeolite A from Metakaolin and Its Application in the Adsorption of Cationic Dyes. APPLIED SCIENCES-BASEL, v. 8, n. 4, APR 2018. (16/01501-1, 13/19523-3, 12/08618-0)