Preparation of nanomaterials derived from graphene oxide, characterization and its application in water purification

• Grant number: 15/07033-7
• Support Opportunities: Regular Research Grants
• Start date: August 01, 2015
• End date: August 31, 2018
• Field of knowledge: Physical Sciences and Mathematics - Chemistry
• Principal Investigator: Patricia Prediger
• Grantee: Patricia Prediger
• Host Institution: Faculdade de Tecnologia (FT). Universidade Estadual de Campinas (UNICAMP). Limeira , SP, Brazil
• Associated researchers: Carlos Roque Duarte Correia ; Enelton Fagnani ; Gisela de Aragão Umbuzeiro ; Vitor Rafael Coluci

Abstract

The present project refers to synthesis of nanomaterials derived from graphene oxide by grafting reactions of diazonium salts. After the elucidation of the structure, these nanomaterials will be used in adsorption processes of various contaminants in water, starting with surfactants. Adsorption kinetics studies will be carried out in order to describe the mathematical model to predict the adsorption process. At the same time, theoretical calculation studies and molecular modeling will be developed to know more deeply the forces and modes of interaction between the nanoadsorbent and the adsorbed materials. Additionally, experiments aimed at recycling nanoadsorbent will be performed, so that this material can be repeatedly used, reducing the process cost. In a second stage, a system will be developed for a continuous-flow adsorption on a pilot scale. Parameters such as number of nanoadsorbent, water flow containing surfactant, pH, among others will be evaluated. In addition to the surfactants, it is planned to investigate the adsorption of heavy metals such as Pb, Cr and Co as well as toxic organic compounds such as pesticides, dyes, etc. The efficiency of the filtering nanomaterial will be evaluated from bioassays with microorganisms, by analyzing parameters of the decrease of the toxicity of heavy metals and toxic organic compounds. Finally, experiments will be performed with actual samples to evaluate the nanoadsorbent performance. The efficiency of the filtering nanomaterial will be checked in situations that occur in nature. Water samples will be collected from rivers contaminated with dyes, pesticides and others. (AU)

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)

NEVES, TAUANY DE FIGUEIREDO; ASSANO, PATRICIA KUSHIMA; SABINO, LIVIA RODRIGUES; NUNES, WILLIAM BARDELIN; PREDIGER, PATRICIA. Influence of Adsorbent/Adsorbate Interactions on the Removal of Cationic Surfactants from Water by Graphene Oxide. WATER AIR AND SOIL POLLUTION, v. 231, n. 6, JUN 10 2020. (15/07033-7, 18/10887-6)

PREDIGER, PATRICIA; CHEMINSKI, THAIS; NEVES, TAUANY DE FIGUEIREDO; NUNES, WILLIAM BARDELIN; SABINO, LIVIA; FRANCO PICONE, CAROLINA SIQUEIRA; OLIVEIRA, RAFAEL L.; DUARTE CORREIA, CARLOS ROQUE. Graphene oxide nanomaterials for the removal of non-ionic surfactant from water. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, v. 6, n. 1, p. 1536-1545, FEB 2018. (15/07033-7, 15/07773-0)

NEVES, TAUANY DE FIGUEIREDO; DALARME, NICOLE BARTICIOTTO; MORAIS DA SILVA, PAULA MAYARA; LANDERS, RICHARD; FRANCO PICONE, CAROLINA SIQUEIRA; PREDIGER, PATRICIA. Novel magnetic chitosan/quaternary ammonium salt graphene oxide composite applied to dye removal. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, v. 8, n. 4, AUG 2020. (15/07033-7, 18/10887-6, 19/07822-2)

NEVES, TAUANY DE FIGUEIREDO; DALARME, NICOLE BARTICIOTTO; MORAIS DA SILVA, PAULA MAYARA; LANDERS, RICHARD; FRANCO PICONE, CAROLINA SIQUEIRA; PREDIGER, PATRICIA. Novel magnetic chitosan/quaternary ammonium salt graphene oxide composite applied to dye removal. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, v. 8, n. 4, p. 13-pg., 2020-08-01. (19/07822-2, 15/07033-7, 18/10887-6)