1. Universidade Federal do Rio Grande do Norte
2. Centro de Tecnologia
3. DEQ - Departamento de Engenharia Química
4. CT - DEQ - Artigos publicados em periódicos

Título:	Comparison of delignified coconuts waste and cactus for fuel-ethanol production by the simultaneous and semi-simultaneous saccharification and fermentation strategies
Autor(es):	Santos, Everaldo Silvino dos Gonçalves, Fabiano Avelino Leza, Héctor Arturo Ruiz Nogueira, Cleitiane da Costa Teixeira, José António Macedo, Gorete Ribeiro de
Palavras-chave:	Bioethanol;Pretreatment;Coconut fibre;SSSF;Enzymatic hydrolysis
Data do documento:	1-Set-2014
Editor:	Elsevier
Referência:	GONCALVES, F. A.; RUIZ, H. A.; NOGUEIRA, C. C.; SANTOS, E. S.; TEIXEIRA, J. A. ; Macedo, Gorete Ribeiro. Comparison of delignified coconuts waste and cactus for fuel-ethanol production by the simultaneous and semi-simultaneous saccharification and fermentation strategies. Fuel (Guildford), p. 66, 2014. http://dx.doi.org/10.1016/j.fuel.2014.04.021 Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0016236114003421?via%3Dihub Acesso em: 06 abr. 2021. https://doi.org/10.1016/j.fuel.2014.04.021
Resumo:	It is of the highest importance to study different alternatives/strategies as simultaneous (SSF) and semi-simultaneous (SSSF) saccharification and fermentation process, as well as the prospects of the utilization of lignocellulosic residues as raw materials for fuel-ethanol production. In the first part of this work, different raw materials (cactus (CAC), green coconut shell (GCS), mature coconut fibre (MCF) and mature coconut shell (MCS)) were pretreated by sequential alkaline hydrogen peroxide (Alk-H2O2)–sodium hydroxide (NaOH) process. The characterization of the obtained solids by FTIR, SEM, X-ray and crystallinity indexes confirmed the higher susceptibility of these pretreated materials to enzymatic action. These results were further confirmed by the corresponding glucose conversion yields – 68.44%, 70.20%, 76.21% and 74.50% for CAC, GCS, MCF and MCS, respectively. Subsequently, the comparison between SSF and SSSF using Saccharomyces cerevisiae, Pichia stipitis, Zymomonas mobilis and pretreated MCF (selected in the enzymatic hydrolysis step) was done, being shown that a short presaccharification step at 50 C for 8 h in the SSSF had a positive effect on the overall ethanol yield, with an increase from 79.27–84.64% to 85.04–89.15%. In all the cases, the SSSF strategy allowed the obtention of higher ethanol concentrations than SSF
URI:	https://repositorio.ufrn.br/handle/123456789/32530
ISSN:	0016-2361
Aparece nas coleções:	CT - DEQ - Artigos publicados em periódicos

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