| Texto completo | |
| Autor(es): |
Moura, A. G. L.
;
Delforno, T. P.
;
Rabelo, C. A. B. S.
;
Kumar, G.
;
Silva, E. L.
;
Varesche, M. B. A.
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Biochemical Engineering Journal; v. 187, p. 12-pg., 2022-10-07. |
| Resumo | |
This study is the first report that describes Iron (16.7 mg Fe0 g-1) and Nickel (0.04 mg Ni0 g-1) nanoparticles (NPs) immobilization on the support material of an Anaerobic Fluidized Bed Reactor (AFBR-NP) and the assessment of its influence on fermentation pathway when compared with a reactor without NPs (AFBR-Control). AFBRs were operated at initial pH 6.8, 37 degrees C, 3.0 h Hydraulic Retention Time. Natural fermentation along with bio-augmentation with Clostridium butyricum were used as inoculation strategy. Both reactors were fed with glucose as main substrate (56 +/- 6 and 21 +/- 2 g COD L-1 d-1 at operational Stages I and II, respectively). 78-98% higher Volatile Fatty Acid (VFA) was observed on AFBR-NP. Metals higher availability specifically favored butyric (1.04 +/- 0.37 g L-1) and acetic (1.22 +/- 0.33 g L-1) acid production metabolic route on AFBR-NP. Under the same operational conditions, lactic acid was observed as main metabolite on AFBR-Control (1.23 +/- 0.25 g L-1). En-zymes related to butyric (butyryl-CoA dehydrogenase, phosphate butyryltransferase, butyrate kinase) and pro-pionic acid (pyruvate-ferredoxin oxidoreductase) metabolic routes were identified on AFBR-NP reactor biofilm. Through these results, it is possible to infer that Fe0 and Ni0 NPs could effectively improve VFA production and the fermentation process. (AU) | |
| Processo FAPESP: | 17/23008-8 - Avaliação da influência de nanopartículas de Ferro e Níquel na produção fermentativa de hidrogênio em reatores em batelada e contínuo |
| Beneficiário: | Alana Gandra Lima de Moura |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 15/06246-7 - Aplicação do conceito de biorrefinaria a estações de tratamento biológico de águas residuárias: o controle da poluição ambiental aliado à recuperação de matéria e energia |
| Beneficiário: | Marcelo Zaiat |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 18/26470-7 - Influência da sacarificação do bagaço de cana-de-açúcar por lacase na produção fermentativa de biocombustíveis |
| Beneficiário: | Camila Abreu Borges da Silva Rabelo |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |