Comparative evaluation of lignocellulosic biorefinery scenarios under a life‐cycle assessment approach

Bello, Sara; Ríos, Carmen; Feijoo, Gumersindo; Moreira, María Teresa

doi:10.1002/bbb.1921

Cited by 36 publications

(23 citation statements)

References 63 publications

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“…However, it is expected that this type of biofuel does not represent a long-term viable fuel source, since its production requires cultivable land that, in turn, generates conflicts with food/feed use of feedstock [1]. On the other hand, second-generation biofuels produced from lignocellulosic biomass, such as crop residues or woody crops (rice straw, corn cob, wheat straw, sugarcane bagasse and cotton stalk) are advantageous alternatives in terms of output/input energy ratio, lower costs and high availability [2][3][4]. Bioethanol can be mixed in different ratios with gasoline or used as pure bioethanol in specially conditioned motors.…”

Section: Introductionmentioning

confidence: 99%

Recovering Apple Agro-Industrial Waste for Bioethanol and Vinasse Joint Production: Screening the Potential of Chile

et al. 2021

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Bioethanol production has increased in demand as a replacement for conventional fuels. This work studies the use of apple pomace, which corresponds to 45% (w/w) of dehydrated apple production, as a reliable and inexpensive source for bioethanol production. Additionally, the vinasse obtained from the process as a byproduct is analyzed. Apple pomace has important properties for energy purposes, with high soluble sugar (6%–8%), organic compounds and low protein content. The carbohydrates were consumed in 99.3% in 144 h at a temperature of 30 °C and in a yeast Saccharomyces cerevisiae (YSC) concentration of 0.10 g/L. The bioethanol purity produced, 99.5% (v/v), was quantified by gas chromatography and calorific value (23.21 MJ/kg). This high purity, which fulfills the EN 15376, ASTM D 4806 Standard, allows its use as a fuel and oil additive. Moreover, it can be stated that vinasse obtained from alcohol distillation is a compound that has physicochemical values like other vinasses. Finally, Chile, as the most important exporting country of dehydrated apples in the world, has great potential to take advantage of the use of this raw material for bioethanol and vinasse production.

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Section: Introductionmentioning

confidence: 99%

Recovering Apple Agro-Industrial Waste for Bioethanol and Vinasse Joint Production: Screening the Potential of Chile

et al. 2021

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“…For example, Laure et al [30], Budzinski & Nitzsche [31] and Bello et al [32] investigated environmental impacts of different biorefinery concepts based on processing beech wood and using organolsolv biomass pretreatment. Laure et al [30] and Bello et al [32] were looking at a biorefinery producing glucose, lignin and xylose. Both authors used the functional unit of amount of biomass treated per hour for the study of emissions of the biorefinery.…”

Section: An Overview Of Life Cycle Assessment Studies Of Woody Biomass Conversion To Bio-chemicalsmentioning

confidence: 99%

A critical review of life cycle assessment studies of woody biomass conversion to sugars

Ryan

Yaseneva

2021

Phil. Trans. R. Soc. A.

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Woody biomass could potentially become a viable raw material for the future sustainable chemical industry. For this, a suitable regulatory framework must exist, that would create favourable economic conditions for wood biorefineries. Such policies must be developed on the basis of scientific evidence—in this case, data supporting the environmental advantages of the bio-based feedstocks to the chemical industry. The most suitable methodology for comprehensive evaluation of environmental performance of technologies is life cycle assessment (LCA). In this review, the available LCA studies of woody biomass fractionation and conversion to bulk chemical feedstocks are critically evaluated. It has been revealed that the majority of the openly available studies do not contain transparent inventory data and, therefore, cannot be verified or re-used; studies containing inventory data are reported in this review. The lack of inventory data also prevents comparison between studies of the same processes performed with different evaluation methods or using different system boundaries. Recommendations are proposed on how to overcome issues of commercial data sensitivity by using black-box modelling when reporting environmental information. From several comparable LCA studies, it has been concluded that today the most environmentally favourable technology for wood biomass fractionation is organosolv. This article is part of the theme issue ‘Bio-derived and bioinspired sustainable advanced materials for emerging technologies (part 1)’.

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“…The development of biorefineries is a vital key for integration of food, feed, chemicals, fuels and energy production in the future. Combinations of physical and biotechnological processes for production of proteins, but also for platform chemicals such as lactic acid will be of importance in the future [9, 10]. Biomass can mitigate, to some extent, the high atmospheric levels of carbon dioxide by replacing fossil fuels; in addition, in many countries around the world, the concept may be important to secure domestic energy carriers and the supply of chemicals.…”

Section: Introductionmentioning

confidence: 99%

Pretreatment for biorefineries: a review of common methods for efficient utilisation of lignocellulosic materials

Galbe

Wallberg

2019

Biotechnol Biofuels

333

195

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The implementation of biorefineries based on lignocellulosic materials as an alternative to fossil-based refineries calls for efficient methods for fractionation and recovery of the products. The focus for the biorefinery concept for utilisation of biomass has shifted, from design of more or less energy-driven biorefineries, to much more versatile facilities where chemicals and energy carriers can be produced. The sugar-based biorefinery platform requires pretreatment of lignocellulosic materials, which can be very recalcitrant, to improve further processing through enzymatic hydrolysis, and for other downstream unit operations. This review summarises the development in the field of pretreatment (and to some extent, of fractionation) of various lignocellulosic materials. The number of publications indicates that biomass pretreatment plays a very important role for the biorefinery concept to be realised in full scale. The traditional pretreatment methods, for example, steam pretreatment (explosion), organosolv and hydrothermal treatment are covered in the review. In addition, the rapidly increasing interest for chemical treatment employing ionic liquids and deep-eutectic solvents are discussed and reviewed. It can be concluded that the huge variation of lignocellulosic materials makes it difficult to find a general process design for a biorefinery. Therefore, it is difficult to define "the best pretreatment" method. In the end, this depends on the proposed application, and any recommendation of a suitable pretreatment method must be based on a thorough techno-economic evaluation.

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Comparative evaluation of lignocellulosic biorefinery scenarios under a life‐cycle assessment approach

Cited by 36 publications

References 63 publications

Recovering Apple Agro-Industrial Waste for Bioethanol and Vinasse Joint Production: Screening the Potential of Chile

Recovering Apple Agro-Industrial Waste for Bioethanol and Vinasse Joint Production: Screening the Potential of Chile

A critical review of life cycle assessment studies of woody biomass conversion to sugars

Pretreatment for biorefineries: a review of common methods for efficient utilisation of lignocellulosic materials

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