RODRIGO FERNANDO BRAMBILLA DE SOUZA
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Artigo IPEN-doc 29694 Effective phosphate removal from water by electrochemically mediated precipitation with coffee grounds biocarbon obtained by non-thermal plasma method2023 - SILVESTRIN, G.A.; GONCALVES, M.H.; GODOI, C.M.; MAIA, V.A.; FERREIRA, J.C.; GUILHEN, S.N.; NETO, A.O.; SOUZA, R.F.B. deThis study investigates the use of biocarbon electrodes, produced from coffee grounds through plasma pyrolysis, in the electrochemically mediated precipitation process for phosphorus removal in a flow reactor. The structural and electrochemical properties of biocarbon were analyzed using X-ray powder diffraction (XRD), Raman spectroscopy, and cyclic voltammetry. The results show that biocarbon consists of both graphene oxide and lignocellulose with surface OH groups that facilitate the breakdown of water, a key step in the electrochemically mediated precipitation process for phosphorus removal. The addition of graphite to the biocarbon paste was found to be necessary to obtain a response from the biocarbon in cyclic voltammetry. The Gr75BC25 electrode achieved higher phosphorus removal rates than other tested electrodes, particularly at low flows, due to the functional groups present in biocarbon enhancing the breakdown of water. However, electrodes with a greater amount of biocarbon exhibit lower rates of phosphorus removal and higher consumption of electrical power, which can be attributed to their higher electrical resistivity. Thus, to optimize its use, it is important to balance the benefits of increased phosphorus removal rates with the trade-off of increased energy consumption and decreased phosphorus removal at higher levels of biocarbon. The results suggest that biocarbon produced from coffee grounds by plasma pyrolysis has the potential to be used as an effective electrode material for electrochemically mediated precipitation processes.Resumo IPEN-doc 22141 Estudo da oxidação eletroquímica do ácido fórmico em meio alcalino utilizando eletrocatalisadores Pd/C-Sbsub(2)Osub(5)-SnOsub(2) PdAuIr/C-Sbsub(2)Osub(5)SnOsub(2)2015 - NANDENHA, J.; SOUZA, R.F.B.; SPINACE, E.V.; NETO, A.O.Resumo IPEN-doc 22139 Oxidação eletroquímica de etanol em meio alcalino utilizando eletrocatalisadores PtSnAu/C, PtSnRh/C e quaternário PtSnAuRh/C2015 - DUTRA, R.M.; SOUZA, R.F.B.; SPINACE, E.V.; NETO, A.O.Resumo IPEN-doc 21752 Oxidação direta do etilenoglicol em meio básico usando eletrocatalisadores binários à base de PtSn/C para aplicação em células a combustível tipo PEN2015 - SOUZA, L.L.; SOUZA, R.F.B.; FORBICINI, C.A.L.G.O.; NETO, A.O.Resumo IPEN-doc 17646 Oxidation of small organics molecules mixtures on PtCeO2/C2011 - SOUZA, R.F.B. de; SILVA, J.C.M.; D'VILLA SILVA, M.; SIMÕES, F.C.; NETO, A.O.; SANTOS, M.C.Resumo IPEN-doc 15686 A Ptsub(3)Sn/C electrocatalyst used as the cathode and anode in a single direct ethanol fuel cell2010 - PARREIRA, L.S.; SILVA, J.C.M.; RASCIO, D.C.; SOUZA, R.F.B. de; SPINACE, E.V.; OLIVEIRA NETO, A.; SANTOS, M.C.Artigo IPEN-doc 17672 Mecanismo da reação de oxidação de etanol em PtSn/C na forma de liga ou segregado: FTIR 'in situ'2011 - SILVA, JULIO C.M. da; PARREIRA, LUANNA S.; SOUZA, RODRIGO F.B. de; CALEGARO, MARCELO L.; SPINACE, ESTEVAM V.; OLIVEIRA NETO, ALMIR; SANTOS, MAURO C. dosArtigo IPEN-doc 17659 Reação de oxidação de etanol sobre Pt/C em diferentes substratos: um estudo espectro-eletroquímico2011 - SOUZA, RODRIGO F.B. de; SILVA, JULIO C.M.; SIMÕES, FERNANDO C.; OLIVEIRA NETO, ALMIR; SANTOS, MAURO C.