Fe3O4 nanoparticles to optimize the co-digestion of vinasse, filter cake, and deacetylation liquor : operational aspects and microbiological routes
Maria Paula Cardeal Volpi, Gustavo Mockaitis, Bruna de Souza Moraes
ARTIGO
Inglês
Agradecimentos: The authors gratefully acknowledge the support of the Environment and Sanitation Laboratory (LMAS) at the School of Agricultural Engineering (FEAGRI/UNICAMP), the National Laboratory of Biorenewables (LNBR/CNPEM), and the Interdisciplinary Center of Energy Planning (NIPE/UNICAMP)....
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Agradecimentos: The authors gratefully acknowledge the support of the Environment and Sanitation Laboratory (LMAS) at the School of Agricultural Engineering (FEAGRI/UNICAMP), the National Laboratory of Biorenewables (LNBR/CNPEM), and the Interdisciplinary Center of Energy Planning (NIPE/UNICAMP). This research was funded São Paulo Research Foundation (FAPESP), grant numbers 2018/09893-1 to M.P.C.V., 2016/16438-3 to B.S.M.
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Abstract: The present work proposes the optimization of the co-digestion of vinasse, filter cake, and deacetylation liquor in a continuous reactor by adding iron(III) oxide (Fe3O4) nanoparticles (NPs), comparing the results with a previous reactor operation without NPs. Initially, tests were carried...
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Abstract: The present work proposes the optimization of the co-digestion of vinasse, filter cake, and deacetylation liquor in a continuous reactor by adding iron(III) oxide (Fe3O4) nanoparticles (NPs), comparing the results with a previous reactor operation without NPs. Initially, tests were carried out in batches with different NP concentrations, resulting in 5 mg L-1 as the best concentration to be added in the continuous reactor along the increments of the applied organic load rate (OLR). Methane (CH4) production reached a maximum value of 2.8 ± 0.1 NLCH4 gVS-1 (normal liter methane per gram of volatile solids), and the organic matter removal reached 71 ± 0.9% in phase VI (OLR of 5.5 gVS L-1 day-1). This production was 90% higher than the reactor co-digestion operation without NPs. The anaerobic digestion (AD) development was stable with stable organic acid (OA) concentrations, indicating the predominance of the propionic acid route to produce CH4. The main methanogenic Archaea identified was Methanoculleus, indicating that the predominant metabolic route was that of acetate (SAO) coupled with hydrogenotrophic methanogenesis. The use of Fe3O4 NPs managed to improve the AD from the first-generation and second-generation (1G2G) ethanol production residues and stimulated microbial community growth, without modifying the preferable metabolic pathways
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FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP
2016/16438-3; 2018/09893-1
Aberto
DOI: https://doi.org/10.3390/applnano4030014
Texto completo: https://www.mdpi.com/2673-3501/4/3/14
Fe3O4 nanoparticles to optimize the co-digestion of vinasse, filter cake, and deacetylation liquor : operational aspects and microbiological routes
Maria Paula Cardeal Volpi, Gustavo Mockaitis, Bruna de Souza Moraes
Fe3O4 nanoparticles to optimize the co-digestion of vinasse, filter cake, and deacetylation liquor : operational aspects and microbiological routes
Maria Paula Cardeal Volpi, Gustavo Mockaitis, Bruna de Souza Moraes
Fontes
Applied nano (Fonte avulsa) |