Ethanol from Sugarcane and the Brazilian Biomass-Based Energy and Chemicals Sector

Rossi, Liane M.; Gallo, Jean Marcel R.; Mattoso, L. H. C.; Buckeridge, Marcos Silveira; Licence, Peter; Allen, David T.

doi:10.1021/acssuschemeng.1c01678

Cited by 24 publications

(11 citation statements)

References 18 publications

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“…However, it was only after the launch of flex fuel vehicles in 2003 that ethanol production received new incentives and began to increase its commercial importance (Bernardo et al, 2019). With heavy investments for the specialization in the production of sugar and alcohol (Paiva & Morabito, 2007), Brazil has become the world's largest sugarcane producer and set the benchmark for fossil fuel replacement with bioethanol (Rossi et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Determining regions for installing flex-biomass sugar-ethanol plants: a multicriteria approach for location

Oliveira

Souza

2022

Gest. Prod.

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The development of sugarcane varieties has allowed Brazilian ethanol plants to operate longer during the harvest, however, in the off-season they remain idle due to the absence of biomass. To increase energy safety and guarantee supply in critical periods, it has been proposed to adapt ethanol plants to the flex-biomass model, allowing the production of biofuel from corn as well. Considering the costs of building or adapting a plant, strategically defining the location is essential for optimizing ethanol production. The aim of this study is to verify whether the combination of location criteria can identify the most suitable regions for the construction of new plants and map them. The method consists of the Analytical Hierarchical Process (AHP) with GIS techniques. We found two large continuous regions suitable for the construction of new flex ethanol plants, corresponding together to 11% of the study area. However, in these two suitable regions, only 0.33% of the territory has more than 90% suitability. Therefore, we confirmed the existence of more suitable regions and concluded that the mapping of these areas enhances the resources application, avoiding installation in inappropriate areas.

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Section: Introductionmentioning

confidence: 99%

Determining regions for installing flex-biomass sugar-ethanol plants: a multicriteria approach for location

Oliveira

Souza

2022

Gest. Prod.

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“…Among the traditionally used organic solvents, alcohols such as ethanol and methanol are some of the most commonly used solvents for the extraction of medium-high polarity phenolic compounds (Chaves et al, 2020). Produced in high scales from renewable sources and with a low price (Rossi et al, 2021), ethanol has a low toxicity and low persistency in nature, being classified as a one of the safest solvents in several solvent guides (Alder et al, 2016;Prat et al, 2016). Although the numerous advantages of using ethanol-water mixtures, the extraction of some secondary metabolites is hindered by the limited solubility of these mixtures (Liu and Chen, 2008;Ferreira and Pinho, 2012;Bogdanov, 2014).…”

Section: Introductionmentioning

confidence: 99%

Ionic liquids vs. ethanol as extraction media of algicidal compounds from mango processing waste

et al. 2022

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The race for environmentally-safe pesticides and biocides has been showing solutions ranging from pest-pathologic microorganisms to safer botanical extracts that can be incorporated in several formulations. Often linked to high biological activities, fruit residues can be recovered from food processing factories to obtain complex extracts enriched with several bioactive chemicals. Mango (Mangifera indica) fruits are processed into food products in high volumes across the globe and generate a consistent residue that contains, among others, the xanthonoid mangiferin and the flavonoid hyperoside. Both compounds have been linked to several pharmacological and pesticidal activities, although not yet studied for algicidal applications, a current concern specially for antifouling and harmful algae blooms control products. The challenge lies, however, not only on the degree of activity of the natural compounds, but also on the processes necessary to separate, isolate and formulate the bioactive compounds in order to obtain an effective final product. The solvent choice plays an important part regarding the selectivity of the separation and isolation of the main bioactive compounds from the solid waste matrix. Ethanolic mixtures in water have been consolidated recently as a promising extraction medium for flavonoids and xanthonoids, although hindered by solubility limitations. In this paper, aqueous solutions of ionic liquids (ILs) were tested, screened and optimized using Box-Behnken design and Response Surface Methodology to obtain mangiferin and hyperosideenriched extracts. Results showed a greater concentration of mangiferin and hyperoside with 1-octyl-3-methylimidazolium chloride ([C 8 MIm] Cl), when compared to choline acetate and ethanolic extracts using optimized parameters. In terms of sufficiency, solvent selection between ILs and ethanolic extraction media was discussed considering economic and environmental factors. Ethanol/water mango waste extracts were then studied for their activity against Raphidocelis subcapitata microalgae, which showed a higher growth inhibition in comparison to standard solutions of mangiferin and hyperoside, either individually and in a 1:1 mixture. A EC 50 value was found in relative low concentrations of mangiferin and hyperoside (0.015 mg L −1 ) detected in the extract, showcasing a promising approach to the direct use of residuary plant extracts in biocidal formulations.

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“…The growing energy demands have caused the exhaustion of fossil fuel resources and severe environmental issues, which lead to the increasing attention towards clean alternative energy [1]. Bioethanol produced from plant biomass is commonly blended with gasoline in the transportation sector, which is deemed as one of the most promising renewable fuel, devoting environmentally friendly and renewable advantages [2]. Governments and energy corporations around the world are actively boosting the development of cellulosic ethanol to replace traditional fossil fuel [3].…”

Section: Introductionmentioning

confidence: 99%

Recalcitrance of Corn Straw Significantly Correlated to the Heterogeneity in Physicochemical Properties of Cell Wall

Wang¹,

Xu²,

Xue³

et al. 2021

Preprint

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Background: Tissue heterogeneity significantly influences the overall saccharification efficiency of plant biomass. However, the mechanisms of specific organ or tissue recalcitrance to enzymatic deconstruction are generally complicated and unclear. A multidimensional analysis for the four parts from twelve corn cultivars was conducted.Results: The results showed that leaf, sheath, pith and rind of corn straw exhibited remarkable heterogeneity in chemical composition, physical structure and cell type, which resulted in the different recalcitrance to enzymatic hydrolysis. High values of lignin, hemicelluloses, degree of polymerization and crystallinity index were critical for the increased recalcitrance, while high value of neutral detergent soluble and pore size generated weak recalcitrance. Interestingly, pore traits of cell wall, especial for microcosmic interface structure, seemed to be a crucial factor that correlated to cellulase adsorption and further affected saccharification.Conclusions: Tissue heterogeneity in physical-chemical traits of cell wall influences the overall saccharification efficiency of biomass. Furthermore, the holistic outlook of cell wall interface is indispensable to understand the recalcitrance and promote the biomass conversion.

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Ethanol from Sugarcane and the Brazilian Biomass-Based Energy and Chemicals Sector

Cited by 24 publications

References 18 publications

Determining regions for installing flex-biomass sugar-ethanol plants: a multicriteria approach for location

Determining regions for installing flex-biomass sugar-ethanol plants: a multicriteria approach for location

Ionic liquids vs. ethanol as extraction media of algicidal compounds from mango processing waste

Recalcitrance of Corn Straw Significantly Correlated to the Heterogeneity in Physicochemical Properties of Cell Wall

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