Deposition of graphene nanoparticles associated with tannic acid in microfiltration membrane for removal of food colouring

A modified microfiltration (MF) membrane was prepared by flow-through coating method. First the sulfuric acid solution was vacuum filtered on the polyethersulfone (PES) MF membrane, providing the introduction of a sulfonic acid group to the backbone of PES. Sequentially, the polyethyleneimine soluti...

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Veröffentlicht in:Environmental technology. - 1993. - 42(2021), 3 vom: 19. Jan., Seite 351-357
1. Verfasser: Paixão, Rebecca Manesco (VerfasserIn)
Weitere Verfasser: da Silva, Luiz Henrique Biscaia Ribeiro, Reck, Isabela Maria, Vieira, Marcelo Fernandes, Bergamasco, Rosângela, Vieira, Angélica Marquetotti Salcedo
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:Environmental technology
Schlagworte:Journal Article Flow-through coating bright blue dye removal cross-linked modified membranes low fouling microfiltration Food Coloring Agents Membranes, Artificial Tannins Graphite 7782-42-5
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520 |a A modified microfiltration (MF) membrane was prepared by flow-through coating method. First the sulfuric acid solution was vacuum filtered on the polyethersulfone (PES) MF membrane, providing the introduction of a sulfonic acid group to the backbone of PES. Sequentially, the polyethyleneimine solution was vacuum filtered to provide amine groups on the membrane surface. Finally, the graphene oxide solution, functionalized with different masses of tannic acid, was vacuum filtered on the membrane surface, producing the cross-linked modified membranes. These were efficient in the removal of anionic food colouring, achieving high removal rates and low fouling, compared to unmodified membrane. The best membrane in terms of bright blue dye removal was the MF PEI5GO1TA4, capable of removing all the feed solution, and demonstrating its possibility of reuse in five cycles of operation 
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650 4 |a cross-linked modified membranes 
650 4 |a low fouling 
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650 7 |a Membranes, Artificial  |2 NLM 
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700 1 |a da Silva, Luiz Henrique Biscaia Ribeiro  |e verfasserin  |4 aut 
700 1 |a Reck, Isabela Maria  |e verfasserin  |4 aut 
700 1 |a Vieira, Marcelo Fernandes  |e verfasserin  |4 aut 
700 1 |a Bergamasco, Rosângela  |e verfasserin  |4 aut 
700 1 |a Vieira, Angélica Marquetotti Salcedo  |e verfasserin  |4 aut 
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