Aminofunctionalized hybrid materials based on fibrous clays applied to adsorption of industrial dyes

• Grant number: 13/09149-7
• Support Opportunities: Scholarships in Brazil - Master
• Start date: January 01, 2014
• End date: August 31, 2015
• Field of knowledge: Engineering - Chemical Engineering - Chemical Process Industries
• Principal Investigator: Emerson Henrique de Faria
• Grantee: Maisa Aparecida Moreira
• Host Institution: Pró-Reitoria Adjunta de Pesquisa e Pós-Graduação. Universidade de Franca (UNIFRAN). Franca , SP, Brazil

Abstract

In recent decades, environmental problems have become increasingly subject to criticism and discussions with greater frequency, mainly due to the large population growth and increasing of industrial activity. It is emphasized as a result of this increased activity, contamination of natural waters has been one of the major problems of society as not only cause environmental damage and can promote a potential health problem. Among the various industrial sectors, the textile sector stands out in this regard, since its industrial processes generate large volumes of wastewater. Which if not properly treated can cause serious environmental damages. In this sense, the multifunctional properties of the materials obtained by the processes of functionalization of clay minerals have attracted the interest of several areas. The inclusion of organic substances in the interlamellar spaces or on the surface of natural clays leads to hybrid materials with specific properties that have aroused interest for possible industrial applications. Several studies have demonstrated that the functionalized clays lamellar or fibrous have a high adsorptive capacity, and also show that the clay-based hybrid materials are effective for adsorption of various contaminants. On the other hand, the multifunctional character of these materials has been little explored in the literature. Therefore, in the present work aims to obtain hybrid materials based on kaolinite, palygorskite and sepiolite functionalized with organosilanes (APTES, and TMPED TMPDT) to study the adsorption capacity of dyes (methylene blue, metanil yellow, light green, orange II, rhodamine B and fluorescein), thereby evaluating its multifunctional character. The materials will be characterized structural and morphological by X-ray diffraction, infrared absorption spectroscopy, elemental analysis, thermal analysis, surface area analysis, scanning and transmission electron microscopy and ultraviolet visible absorption spectroscopy. (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)

MOREIRA, MAISA A.; CIUFFI, KATIA J.; RIVES, VICENTE; VICENTE, MIGUEL A.; TRUJILLANO, RAQUEL; GIL, ANTONIO; KORILI, SOPHIA A.; DE FARIA, EMERSON H.. Effect of chemical modification of palygorskite and sepiolite by 3-aminopropyltriethoxisilane on adsorption of cationic and anionic dyes. APPLIED CLAY SCIENCE, v. 135, p. 394-404, JAN 2017. (13/50216-0, 13/09149-7, 13/19523-3)