Synthesis of new nanoadsorbents, their characterizations and applications in pollutant adsorption in water

• Grant number: 22/14834-0
• Support Opportunities: Regular Research Grants
• Start date: July 01, 2023
• End date: December 31, 2025
• Field of knowledge: Engineering - Sanitary Engineering - Water Supply and Wastewater Treatment
• Principal Investigator: Patricia Prediger
• Grantee: Patricia Prediger
• Host Institution: Faculdade de Tecnologia (FT). Universidade Estadual de Campinas (UNICAMP). Limeira , SP, Brazil
• City of the host institution: Limeira
• Associated researchers: Bruno André Fernandes de Jesus da Silva Nunes ; Melissa Gurgel Adeodato Vieira ; Rafael de Lima Oliveira

Abstract

The present project refers to the synthesis of new nanoadsorbents through protocols based on the principles of green chemistry, their characterizations and applications in the removal of various pollutants in water. The project has two fronts, the first aims at the preparation of reduced graphene oxide (rGO) functionalized with quaternary ammonium salt, both produced by a green route. Regarding the new cationic rGO material, it is believed that it will exhibit unique properties due to the positively charged rGO, which will confer a potential adsorbent capacity for electron-rich organic pollutants. Afterwards, the material will be incorporated into polymeric membranes that will be applied in the removal of dyes and drugs in water. The membranes will act as a support for the rGO and will facilitate its removal from the medium after adsorption and enabling pollutant filtration assays. The optimization of the pollutant removal process will be carried out, as well as the adsorptions in multicomponent systems, and the kinetics, isotherms and thermodynamic parameters linked to the adsorption process will be studied, as well as the membrane reuse. The second front deals with the preparation of mesoporous carbons from sucrose and plastic waste. The porous carbons will be doped and used in the generation of magnetic composites, which will be characterized by several techniques, including a magnetization curve. The design of these new nanoadsorbents was planned to obtain new materials with three-dimensional porous structures doped with metallic cations (Na+, Mg2+ and Al3+) or heteroatoms (P, B, and N) incorporated into the biopolymer agar or into green iron nanoparticles cross-linked with proanthocyanidin. The synthesized adsorbents will be used to remove antibiotics, dyes and other drugs. The optimization of the adsorption process will be carried out by varying several parameters and the kinetics, isotherms and thermodynamic parameters linked to the adsorption process will be studied. In addition, the new magnetic particles can be removed from the aqueous medium using a magnet, which facilitates the removal process, as well as their reuse after use, which will also be investigated. Additionally, it is planned to study the removal efficiency of the antibiotic ciprofloxacin, an emerging contaminant of anthropogenic origin frequently detected in domestic effluents, through the adsorption process in the composites, using standardized toxicity tests to evaluate biomarkers in aquatic species. (AU)

Scientific publications

(9)

(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)

MALVESTITI, JACQUELINE A.; CAMPAROTTO, NATALIA G.; CAVALCANTE, RODRIGO P.; PREDIGER, PATRICIA; DANTAS, RENATO F.. Comparative study of the efficiency of conventional and green-prepared iron nanoparticles for catalytic ozonation. CATALYSIS TODAY, v. 430, p. 11-pg., 2024-01-25. (22/04015-1, 22/14834-0, 23/02041-8, 22/00454-0)

RODRIGUES, EVERTON AUGUSTO; VIOLIN, DANIEL SILVA; MASTELARO, VALMOR ROBERTO; NEVES, TAUANY DE FIGUEIREDO; PREDIGER, PATRICIA. Removal of propranolol by membranes fabricated with nanocellulose/ proanthocyanidin/modified tannic acid: The influence of chemical and morphologic features and mechanism study. International Journal of Biological Macromolecules, v. 256, p. 15-pg., 2023-12-01. (13/07296-2, 22/14834-0, 19/25228-0)

FARIAS, MARINA BARBOSA DE; ELGUETA, NIXSON MANOSALVA; CAMPAROTTO, NATALIA GABRIELE; PREDIGER, PATRICIA; VIEIRA, ADEODATO. Comparative efficiency of conventional and green functionalized carbon-based materials for the uptake of priority produced water contaminants. JOURNAL OF CLEANER PRODUCTION, v. 447, p. 13-pg., 2024-03-08. (23/09491-9, 22/14834-0, 23/02041-8)

DA SILVA, PAULA MAYARA MORAIS; CAMPAROTTO, NATALIA GABRIELE; NEVES, TAUANY DE FIGUEIREDO; CARRARA, ALAN SAMBUGARI; MASTELARO, VALMOR ROBERTO; OLIVEIRA, RAFAEL L.; PREDIGER, PATRICIA. Green composites based on magnetic N-doped carbons: Synergetic effect on the simultaneous adsorption of emerging contaminants from water. JOURNAL OF WATER PROCESS ENGINEERING, v. 58, p. 14-pg., 2024-01-31. (23/02041-8, 13/07296-2, 22/14834-0, 19/25228-0, 22/09912-1)

CAMPAROTTO, NATALIA GABRIELE; MALVESTITI, JACQUELINE A.; DE SOUSA, IURE BERNARDINO; FOKOUE, HAROLD H.; DANTAS, RENATO FALCAO; VIEIRA, MELISSA GURGEL ADEODATO; PREDIGER, PATRICIA. Enhanced catalytic ozonation using MIL-53(Fe) MOF and CS@MIL-53(Fe) composite beads: A comparative evaluation for organic contaminant removal. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, v. 13, n. 6, p. 18-pg., 2025-12-25. (22/14834-0, 23/09491-9, 24/23386-6, 23/02041-8)

DE FARIAS, MARINA BARBOSA; PREDIGER, PATRICIA; VIEIRA, MELISSA GURGEL ADEODATO. Iron nanoparticles-chitosan/reduced graphene oxide (mCS@rGO) beads as a multifunctional material for the adsorption and degradation of phenol from aqueous media. SURFACES AND INTERFACES, v. 74, p. 13-pg., 2025-10-01. (22/14834-0, 23/09491-9, 23/02041-8)

NEVES, TAUANY DE FIGUEIREDO; CRISTALE, JOYCE; CAMPAROTTO, NATALIA GABRIELE; MASTELARO, VALMOR ROBERTO; DANTAS, RENATO FALCAO; PREDIGER, PATRICIA. Synergistic effect of ozonation and filtration with graphene-based membranes in the removal of flame retardants in multi-compound systems: Experimental and DFT study. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, v. 13, n. 1, p. 16-pg., 2024-12-07. (23/02041-8, 22/14834-0, 19/25228-0, 22/00454-0, 13/07296-2)

CAMPAROTTO, NATALIA GABRIELE; FULANETI, GABRIEL HENRIQUE SILVA; FOKOUE, HAROLD HILARION; MASTELARO, VALMOR ROBERTO; VIEIRA, MELISSA GURGEL ADEODATO; PREDIGER, PATRICIA. Comparison on the performance of green and conventional magnetic chitosan-based composites in the removal of complex dyes: Synergetic effect, experimental and theoretical studies. International Journal of Biological Macromolecules, v. 289, p. 20-pg., 2024-12-20. (13/07296-2, 22/14834-0, 23/02041-8)

NEVES, TAUANY DE FIGUEIREDO; LOPES, CLAUDIA BATISTA; MASTELARO, VALMOR ROBERTO; DANTASA, RENATO FALCAO; SILVA, CARLOS MANUEL; PREDIGERA, PATRICIA. Toxic metals removal by new membranes based on graphene oxide and a cationic Polymer: Influence of chemical and morphological aspects. CHEMICAL ENGINEERING JOURNAL, v. 498, p. 14-pg., 2024-09-13. (19/25228-0, 22/11525-6, 13/07296-2, 22/14834-0)