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Development and characterization of nanocellulose and environmental impact studies

Grant number: 18/21985-9
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): January 01, 2019
Effective date (End): December 31, 2019
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
Principal researcher:Danielle Goveia
Grantee:Vinicius de Jesus Carvalho de Souza
Home Institution: Universidade Estadual Paulista (UNESP). Campus Experimental de Itapeva. Itapeva , SP, Brazil

Abstract

Nanoparticles are emerging as the object of research in all fields of chemistry. Their special properties is cause for concern because a considerable portion of these materials is eliminated in the environment. A key point of the discussion is how nanoparticles will interact with other components in natural waters. In this project the main objective will be to develop a nanomaterial with complexing ability with metals starting from cotton linter. The material developed at nanoscale will be applied in studies of interaction with metallic ions in the presence of humic substances. It is intended to differentiate free and labile metal ions using the obtained nanocellulose and organic matter in the form of aquatic humic substances (extracted from samples collected in river rich in organic matter). It is intended to simulate the environmental systems and to verify the competition between the complexants and to verify how the nanocellulose particles influence the interactions between the metal and the organic matter. The differentiation of the free and complexed ions will be done using an ultrafiltration system equipped with polyethersulfone membrane (1KDa) and determination of the metals by atomic absorption spectrometry with flame atomization and / or graphite furnace.

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