Co-fermentation of glycerol and molasses for obtaining biofuels and value-added products
| Autor: | Danúbia Freitas, Isadora Bastos Rueger, Pablo André Moreira de Almeida Barbosa, Eduardo Lucena Cavalcante de Amorim, Daniela de Los Angeles Dalmao Pereyra, Fernanda Santana Peiter |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Co-fermentation Hydrogen Hydraulic retention time 020209 energy General Chemical Engineering chemistry.chemical_element 02 engineering and technology Pulp and paper industry chemistry.chemical_compound 020401 chemical engineering chemistry Fluidized bed Biofuel 0202 electrical engineering electronic engineering information engineering Glycerol Propionate Sewage treatment 0204 chemical engineering |
| Zdroj: | Brazilian Journal of Chemical Engineering. 37:653-660 |
| ISSN: | 1678-4383 0104-6632 |
| DOI: | 10.1007/s43153-020-00056-4 |
| Popis: | By-products from biofuels production, such as crude glycerol and sugarcane molasses, are interesting carbon sources for anaerobic biological production of hydrogen and metabolites. The objective of this work was to promote the co-fermentation of those two substrates in an anaerobic fluidized bed reactor for obtaining biofuels and value-added products. The total and useful volumes of the reactor were 1.2 and 0.945 L, respectively. Sludge from a sewage treatment plant UASB reactor was used as the source of microorganisms. The crushed tire was applied as a support material to guarantee microbial adhesion. The molasses concentration was kept constant (4 g/L) and the crude glycerol varied (phase 1 = 1 g/L; phase 2 = 2 g/L, phase 3 = 3 g/L and phase 4 = 0 g/L) for a constant hydraulic retention time of 4 h. The highest average hydrogen yield (3.77 mol-H2/molglucose) and the highest average hydrogen production rate (0.34 L-H2/h Lreactor) occurred in the fourth phase of operation (without crude glycerol). The main soluble metabolites produced were 1,3-propanediol (14.4–38.8%), propionate (12.1–37.5%) and acetate (13.2–26.9%). |
| Databáze: | OpenAIRE |
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