Development of an ammonia pretreatment that creates synergies between biorefineries and advanced biomass logistics models

Morais, Ana Rita C.; Zhang, Jian; Dong, Hui; Otto, William G.; Mokomele, Thapelo; Hodge, David B.; Balan, Venkatesh; Dale, Bruce E.; Bogel‐Łukasik, Rafał; Sousa, Leonardo da Costa

doi:10.1039/d2gc00488g

Cited by 15 publications

(3 citation statements)

References 59 publications

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“…In the world, production of 100-146 billion metric tons of biomass is projected each year [14]. It is well known that the production of biofuels from biomass requires pretreatment at high temperature using dilute acid [15], alkali [16], ammonia [17], or hot water [18], followed by enzymatic hydrolysis. For butanol production in batch fermentations, approximately 80-90 g/L biomass is pretreated and hydrolyzed, which results in the release of approximately 55 g/L total sugar (hexoses and pentoses) that is 100% of cellulosic sugar present in the fiber or biomass.…”

Section: Introductionmentioning

confidence: 99%

Can Xylose Be Fermented to Biofuel Butanol in Continuous Long-Term Reactors: If Not, What Options Are There?

et al. 2023

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This study applied concentrated xylose (60–250 g/L) medium to produce butanol (acetone butanol ethanol, or ABE). A control batch fermentation of 61 g/L initial glucose using Clostridium beijerinckii P260 resulted in a productivity and yield of 0.33 g/L·h and 0.43 g/g, respectively. Use of 60 g/L xylose in a batch system resulted in productivity and yield of 0.26 g/L·h, and 0.40 g/g, respectively. In these two experiments, the culture fermented 89.3% glucose and 83.6% of xylose, respectively. When ABE recovery was coupled with fermentation for continuous solvent removal, the culture fermented all the added xylose (60 g/L). This system resulted in a productivity and yield of 0.66 g/L·h and 0.44 g/g, respectively. When the sugar concentration was further increased above 100 g/L, only a small fraction of the sugar was fermented in batch cultures without product removal. However, with simultaneous product removal, all the xylose (150 g/L) was fermented provided the culture was fed with nutrients intermittently. In this system, 66.32 g/L ABE was produced from 150 g/L xylose with a productivity of 0.44 g/L·h and yield of 0.44 g/g. Using the integrated culture system allowed sugar consumption to be increased by 300% (150 g/L). The continuous system using xylose as a feed did not sustain and after 36 days (864 h) of fermentation, it produced only 2–3 g/L ABE. Rather, the culture became acidogenic and produced 4–5 g/L acids (acetic and butyric). This study suggested that xylose be fermented in batch reactors coupled with simultaneous product recovery rather than in continuous reactors.

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Section: Introductionmentioning

confidence: 99%

Can Xylose Be Fermented to Biofuel Butanol in Continuous Long-Term Reactors: If Not, What Options Are There?

et al. 2023

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“…They then estimate the production cost of ethanol to be approximately $5.3 per gallon, which can be lowered to $1.8 per gallon with further improvements. 72 The price is similar or a little bit higher than the case produced by the other pretreatment methods, 76 although precise comparison of the values from different literature is difficult. Reducing the price of ethanol to match that of gasoline will facilitate the practical application of bioethanol.…”

Section: Feasibility Of Continuous Ethanol Productionmentioning

confidence: 99%

Bioethanol fermentation in the presence of ionic liquids: mini review

Kuroda

2024

New J. Chem.

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“…h along with excellent carbohydrate conversion yields (above 80%) [95,96]. The combination of appropriate pre-treatments and enzyme saccharification is essential, as optimal processes can lead to the recovery of more than 75% of the theoretical fermentable sugars (725 g) from sugarcane bagasse [97]. These advancements offer promising strategies for enhancing the efficiency and cost-effectiveness of enzymatic saccharification processes.…”

Section: Bagassementioning

confidence: 99%

Underutilized Malaysian Agro-Industrial Wastes as Sustainable Carbon Sources for Lactic Acid Production

Wan-Mohtar,

Khalid,

Rahim

et al. 2023

Fermentation

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Lactic acid is a versatile chemical with a wide range of industrial applications, including food additives as well as the production of biodegradable plastics, pharmaceuticals and cosmetics. LA can be produced through carbohydrate fermentation using various microorganisms, including lactic acid bacteria (LAB). However, the high production cost of commercial fermentation media for lactic acid raises concerns among researchers. Consequently, there is a demand for research to develop new, more affordable, and sustainable fermentation media. Utilizing underutilized agro-industrial wastes from Malaysia, particularly in the coconut, oil palm, rice, and sugarcane processing industries, offers several advantages. These include biomass reuse, cost-effective production of valuable chemicals, and agricultural waste reduction. This review discusses the potential of underutilized Malaysian agro-industrial waste from the coconut, oil palm, rice and sugarcane processing industries as sustainable carbon sources for LA production. The topics covered encompass the chemical and nutritional composition of the wastes, their potential for lactic acid fermentation with specific microorganisms, factors influencing lactic acid production, and potential applications. Additionally, this review also highlights the challenges and opportunities associated with reutilizing agricultural waste for lactic acid production.

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Development of an ammonia pretreatment that creates synergies between biorefineries and advanced biomass logistics models

Abstract: Biomass densification allows economic long-distance hauling and enables mega-biorefineries that benefit from economies of scale. COBRA-LE pretreatment uses densified biomass to achieve near-theoretical conversion of carbohydrates and usable lignin.

Cited by 15 publications

References 59 publications

Can Xylose Be Fermented to Biofuel Butanol in Continuous Long-Term Reactors: If Not, What Options Are There?

Can Xylose Be Fermented to Biofuel Butanol in Continuous Long-Term Reactors: If Not, What Options Are There?

Bioethanol fermentation in the presence of ionic liquids: mini review

Underutilized Malaysian Agro-Industrial Wastes as Sustainable Carbon Sources for Lactic Acid Production

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