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Título: | Effect of inoculum composition on the microbial community involved in the anaerobic digestion of sugarcane bagasse. |
Autor(es): | Pereira, Andressa Rezende Assis, Nathália Vercelli de Paranhos, Aline Gomes de Oliveira Lima, Diego Roberto Sousa Baeta, Bruno Eduardo Lobo Aquino, Sergio Francisco de Silva, Silvana de Queiroz |
Palavras-chave: | Lignocellulosic material Anaerobic digestion Methanogens Fermentative bacteria Hydrolytic bacteria |
Data do documento: | 2023 |
Referência: | PEREIRA, A. R. et al. Effect of inoculum composition on the microbial community involved in the anaerobic digestion of sugarcane bagasse. Environmental Technology, 2023. Disponível em: <https://www.tandfonline.com/doi/full/10.1080/09593330.2023.2166877>. Acesso em: 01 ago. 2023. |
Resumo: | In anaerobic digestion (AD), the choice of inoculum type seems to be relevant for methane production for complex substrates, such as lignocellulosic material. Previous work demonstrated that the addition of fresh manure and ruminal fluid to anaerobic sludge improved methane productivity and kinetics of AD of crude sugarcane bagasse (CSB). Considering that the improvement of methane production could be a result of a more adapted microbial community, the present study performed the Next Generation Sequencing analysis to identify changes in the microbiome of anaerobic sludge inoculum, resulting from fresh manure and ruminal fluid addition. In comparison with AD performed only with anaerobic sludge inoculum (50:50, U), accumulated methane production was 15% higher with anaerobic sludge plus ruminal fluid inoculum (50:50, UR) and even higher (68%) with anaerobic sludge with fresh bovine manure inoculum (50:50, UFM), reaching the value of 143 NmLCH4.gVS −1 . Clostridium species were highly abundant in all inocula, playing an important role during the hydrolysis and fermentation of CSB, and detoxifying potential inhibitors. Microbial composition also revealed the occurrence of Pseudomonas and Anaerobaculum at UFM inoculum that seem to have contributed to the higher methane production rate, mainly due to their hydrolytic and fermentative ability on lignocellulosic substrates. On the other hand, the presence of Alcaligenes might have had a negative effect on methane production due to their ability to perform methane oxidation. |
URI: | http://www.repositorio.ufop.br/jspui/handle/123456789/17941 |
Link para o artigo: | https://www.tandfonline.com/doi/full/10.1080/09593330.2023.2166877 |
DOI: | https://doi.org/10.1080/09593330.2023.2166877 |
ISSN: | 1479-487X |
Aparece nas coleções: | DECBI - Artigos publicados em periódicos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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ARTIGO_EffectInoculumComposition.pdf Restricted Access | 3,21 MB | Adobe PDF | Visualizar/Abrir |
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