Vinasse – A potential biofuel – Cofiring with coal in a fluidised bed combustor

Akram, Muhammad; Tan, Chee-Keong; Garwood, Roy; Thai, S. M.

doi:10.1016/j.fuel.2015.06.036

Cited by 33 publications

(20 citation statements)

References 9 publications

(15 reference statements)

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“…The original vinasse sample, delivered from the company, was concentrated. Therefore, its microbial activity was very low because of its acidic condition (below pH 5) and low water content [25]. Due to its high COD, different levels of dilution for vinasse were needed for it to be utilized as a cultivation substrate for filamentous fungi.…”

Section: The Effects Of Vinasse Concentration On Fungal Cultivationmentioning

confidence: 99%

“…Vinasse, the main by-product of the bio-ethanol production industry, is rich in chemicals, organic compounds, and micro and macronutrients that can be used as a suitable substrate in the submerged cultivation of microorganisms, including filamentous fungi. Molasses is used in bio-ethanol plants to produce ethanol [25]. After ethanol extraction, the residual liquor, a brownish-black and dark liquid known as vinasse, remains [26].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Filamentous Fungal Biomass Cultivated on Vinasse as an Alternative Nutrient Source of Fish Feed: Protein, Lipid, and Mineral Composition

et al. 2019

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The rapid growth of aquaculture and scarcity of conventional fish feed supplements has prompted the introduction of new sustainable supplementation sources. In this study, the potential of five strains of fungal biomass of Ascomycetes and Zygomycetes edible filamentous fungi, Aspergillus oryzae, Neurospora intermedia, Rizhopus oryzae, Monascus purpureus, and Fusarium venenatum, cultivated on vinasse, a by-product of the bioethanol industry, as alternative protein sources for fishmeal in the fish diet was evaluated. It was observed that 5% vinasse with an initial pH of 5–6.5 can support fungal biomass yields of 34.3 ± 2.4–118.5 ± 3.9 g DM/L for A. Oryzae, N. intermedia, and R. oryzae. High protein contents of about 44.7%, 57.6%, and 50.9% (w/w), and fat contents of 7.0%, 3.5%, and 5.5% (w/w) were obtained for A. oryzae, N. intermedia, and R. oryzae, respectively. The latter three fungi species contained noticeable amino acid contents, including promising profiles of amino acids that are highly compatible with those of fishmeal. These findings provide evidence that fungal biomasses, with their relatively high protein content, good amino acid profiles, and other essential nutrients, are a promising supplementation alternative that can be produced from low-value by-products and organic-rich waste streams like vinasse to meet the dietary protein requirements in fish feed.

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Section: The Effects Of Vinasse Concentration On Fungal Cultivationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of Filamentous Fungal Biomass Cultivated on Vinasse as an Alternative Nutrient Source of Fish Feed: Protein, Lipid, and Mineral Composition

et al. 2019

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“…[3,10] Vinasse streams which result from sugarcane processing also present high levels of sulfate due to the use of sulfuric acid in specific steps of both sugar and ethanol production. [8] The reference literature indicates different technological approaches to the management of vinasse, including concentration for volume reduction and/or animal feed production, [11] incineration for the simultaneous production of energy and nutrient-rich ashes, [12] biological conversion via anaerobic processes for bioenergy recovery through biogas production [8,13] and a return to the agricultural fields for crop irrigation and fertilization processes. [3] Appreciable levels of macro-and micronutrients, mainly potassium, are observed in sugarcane vinasse, which favors the direct use of this wastewater in agricultural fields through fertirrigation.…”

Section: Introductionmentioning

confidence: 99%

Fertirrigation with sugarcane vinasse: Foreseeing potential impacts on soil and water resources through vinasse characterization

Fuess

Rodrigues

García

2017

Journal of Environmental Science and Health, Part A

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This paper reports the characterization of the polluting potential of sugarcane vinasse, the main wastewater from ethanol production. Compositional data from vinasse samples collected from sugarcane biorefineries were used to predict negative effects on the soil, water resources and crops potentially associated with fertirrigation, the primary final destination of vinasse in Brazil. High risks of soil salinization were associated with the land disposal of vinasse, as evidenced by the high levels of total dissolved solids (TDS; >4,000 mg L) and electrical conductivity (>6.7 dS m). The high TDS levels coupled with the high biodegradable organic content of vinasse (>14 g L) also favor organic overloading events, leading to local anaerobiosis conditions. Conversely, soil sodification should not be observed in areas fertirrigated with sugarcane vinasse, given the low Na concentrations (<66 mg L) relative to Mg (>145.1 mg L) and Ca (>458.4 mg L) levels. Priority pollutants (Cu, Cr, Ni, Pb and Zn) and phytotoxic elements (Al and Fe) were also found in the analyzed samples; however, relevant environmental impacts should not be associated with these particular constituents. Overall, the relatively simple methodology used herein could efficiently replace massive field data collection to provide a basic understanding of the fate of vinasse in the environment in order to highlight the priority points to be considered in the management of this effluent. In summary, the prompt implementation of treatment plants in distilleries, in addition to a continuous and broad compositional characterization of vinasse, is essential to guarantee its adequate reuse.

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“…Currently, the management and disposal of vinasse, a recalcitrant waste of the sugar-ethanol industry, has emerged as a priority from an environment perspective due to its polluting load, especially Biological Oxygen Demand (BOD) [19,20]. Agri-food wastes are additional cheap, sustainable and attractive substrate for the production of biopolymers or other high value-added products [21].…”

mentioning

confidence: 99%

Bioprospecting of exopolysaccharide-producing bacteria from different natural ecosystems for biopolymer synthesis from vinasse

Ventorino

Nicolaus

Donato

et al. 2019

Chem. Biol. Technol. Agric.

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Background: Exopolysaccharides (EPSs) belong to a family of organic thickeners or alternative hydrocolloids of microbial origin. Because the chemical structure offers beneficial bioactive functions, biocompatibility and biodegradability, EPSs are used in the chemical, food, pharmaceutical, cosmetics, and packaging industries as well as in agriculture and medicine. In this study, new bacterial strains were selected on the basis of their ability to synthesize EPS from substrate containing vinasse as a nutrient source to identify the best candidate for bio-based polymer production. Results: Among the 99 newly identified bacterial strains isolated from different natural ecosystem, the strain Azotobacter chroococcum 76A was selected as the best biopolymer producer since it synthesized the highest concentration of EPS in all media containing vinasse. The maximum EPS concentration (44.6 ± 0.63 mg/50 mL) was observed at 24 h, corresponding to its sub-stationary growth phase (7 × 10 8 ± 0.29 CFU/mL). Chemical characterization of the EPS produced showed that carbohydrates representing the principal component, followed by uronic acids and proteins. Interestingly, comparing the IR spectrum of the EPS with alginate by FTIR-ATR analysis revealed an overlap of a peak identified as guluronic acid, a component of alginate. Conclusions: The potential biotechnological capacity of A. chroococcum 76A to synthetize biopolymer from vinasse, inexpensive starting materials, represents a possible alternative to expensive disposal of agri-food waste through its transformation into high value-added products.

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Vinasse – A potential biofuel – Cofiring with coal in a fluidised bed combustor

Cited by 33 publications

References 9 publications

Evaluation of Filamentous Fungal Biomass Cultivated on Vinasse as an Alternative Nutrient Source of Fish Feed: Protein, Lipid, and Mineral Composition

Evaluation of Filamentous Fungal Biomass Cultivated on Vinasse as an Alternative Nutrient Source of Fish Feed: Protein, Lipid, and Mineral Composition

Fertirrigation with sugarcane vinasse: Foreseeing potential impacts on soil and water resources through vinasse characterization

Bioprospecting of exopolysaccharide-producing bacteria from different natural ecosystems for biopolymer synthesis from vinasse

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