Sequential hydrogen and methane production using the residual biocatalyst of biodiesel synthesis as raw material |
| |
Authors: | Stella Buback dos Santos Mariana de Oliveira Faber Ana Cristina de Araujo Collaço Erika Cristina G. Aguieiras Denise Maria G. Freire Marta A.P. Langone Viridiana S. Ferreira-Leitão |
| |
Affiliation: | 1. National Institute of Technology, Ministry of Science, Technology, and Innovation (MCTI), Laboratory of Biocatalysis, CEP 20081-312, Rio de Janeiro, RJ, Brazil;2. Rio de Janeiro State University (UERJ), Chemistry Institute, CEP 20550-900, Rio de Janeiro, RJ, Brazil;3. Federal University of Rio de Janeiro, Department of Biochemistry, CEP 21941-909, Rio de Janeiro, RJ, Brazil;4. Federal University of Rio de Janeiro Campus UFRJ - Duque de Caxias Prof. Geraldo Cidade, CEP 25240-005, Rio de Janeiro, RJ, Brazil;5. Federal Institute of Education, Science, and Technology of Rio de Janeiro (IFRJ), CEP 20260-100, Rio de Janeiro, RJ, Brazil |
| |
Abstract: | Residual Fermented Solid (RFS) is the used biocatalyst obtained after enzymatic biodiesel production carried out applying the fermented solid (FS) with lipase activity. Approximately 350 g of RFS are generated for each liter of biodiesel produced from palm residues fermented solid. In this study, this residue was used for the first time as a raw material for biological hydrogen production through dark fermentation and sequential application of the hydrogen production liquid waste (HPLW) for methane obtainment via anaerobic digestion. The RFS was composed mostly of oils and fats (60% wt.%), and carbohydrates, such as mannose, glucose, and xylose. Hydrogen yield reached 239 ± 44 mL H2/L after 24 h of fermentation using 31 gRFS/L at the beginning of the process. Additionally, 204 ± 13 mL CH4/g COD were produced through the anaerobic digestion of HPLW, which represented 61% of efficiency. |
| |
Keywords: | Residual fermented solid Biohydrogen Biomethane Dark fermentation Anaerobic digestion Palm oil biorefinery |
本文献已被 ScienceDirect 等数据库收录! |
|