Xylo-oligosaccharides, fermentable sugars, and bioenergy production from sugarcane straw using steam explosion pretreatment at pilot-scale

Brenelli, Lívia Beatriz; Bhatia, Rakesh; Djajadi, Demi T.; Thygesen, Lisbeth Garbrecht; Rabelo, Sarita Cândida; Leak, David J.; Franco, Telma Teixeira; Gallagher, Joe

doi:10.1016/j.biortech.2022.127093

Cited by 27 publications

(7 citation statements)

References 47 publications

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“…The peaks < 100 °C correspond to moisture. All curves show peaks lower than the typical degradation temperature of hemicellulose at 285 °C, confirming that hemicellulose, composed mainly of xylan, was solubilized during hydrothermal process, and recovered as soluble saccharides including xylo-oligosaccharides, xylose, and arabinose in the liquid [ 17 , 47 ]. During steam-explosion, the ester bonds that hold lignin and carbohydrates together were broken, causing lignin to melt and then condense.…”

Section: Resultsmentioning

confidence: 87%

Effect of Processing Time of Steam-Explosion for the Extraction of Cellulose Fibers from Phoenix canariensis Palm Leaves as Potential Renewable Feedstock for Materials

Pérez-Aguilar¹,

Ruzafa-Silvestre²,

Arán-Aı́s³

2022

Polymers

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This paper briefly discusses the utilization of pruning wastes as a lignocellulosic source of cellulose fibers, which could be of potential use in the development of valuable materials such as sustainable textiles and fillers for footwear components including uppers and soles. Phoenix canariensis palm leaves, one of the most common plants found in the local environment of the Alicante region (Spain), was used as a biomass raw material. Determining appropriate processing parameters and their desired range of maximum cellulose extraction states is key to improving yields. Therefore, this study aimed at determining the effect of processing conditions on cellulose extraction by optimizing the hydrothermal process, as a part of overall combined processes involving several steps. Specifically, the time of the steam-explosion stage was varied between 15 and 33 min in order to maximize the cellulose extraction yield. The composition of both the extracted fibers and the resulting by-product solutions generated during the different steps were determined by FTIR and TGA in order to analyze the effectiveness of removing hemicellulose, lignin and extractives as well as the removed substances at each stage for their further valorization. Additionally, the morphology of cellulosic fibers was evaluated by SEM and their crystallinity by XRD. Crystalline cellulose fibers were successfully extracted from pruning biomass wastes, achieving more efficient removal of hemicellulose and lignin when the hydrothermal process was assessed over 25–33 min. This resulted in finer and smoother fibers, but the crystallinity of α-cellulose decreased as the time of steam-explosion increased to 33 min. The characterization of waste solutions generated after the different extraction steps confirmed that the most effective treatments to remove lignin and hemicellulose from the cell wall are alkaline pretreatment and a hydrothermal process.

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Section: Resultsmentioning

confidence: 87%

Effect of Processing Time of Steam-Explosion for the Extraction of Cellulose Fibers from Phoenix canariensis Palm Leaves as Potential Renewable Feedstock for Materials

Pérez-Aguilar¹,

Ruzafa-Silvestre²,

Arán-Aı́s³

2022

Polymers

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“…16 The current market price for pectin is $15 per kg 48 and $25-$50 per kg for XOS (80-98% purity). 11 These values prove the economic feasibility and profitability of the proposed biorefinery.…”

Section: Techno-economic Evaluationmentioning

confidence: 72%

“…Xylooligosaccharides are also stable in response to differences in temperature and pH, and have favorable organoleptic properties. The global XOS market expectation is to achieve ∼$130 million by 2025 11 . The enzymatic hydrolysis of xylan (hemicellulose) is the most sustainable way to produce high purity XOS with prebiotic potential 12 .…”

Section: Introductionmentioning

confidence: 99%

“…The global XOS market expectation is to achieve ∼$130 million by 2025. 11 The enzymatic hydrolysis of xylan (hemicellulose) is the most sustainable way to produce high purity XOS with prebiotic potential. 12 However, XOS production is still more expensive than other prebiotics because of the costs related to alkalis used during pretreatments (generally NaOH or KOH) and enzymatic cocktails.…”

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confidence: 99%

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Integrated biorefinery for xylooligosaccharides, pectin, and bioenergy production from orange waste

Martins,

Goldbeck

2023

Biofuels Bioprod Bioref

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Orange waste is one of the most underutilized biowastes. It accounts for 50% of the fruit weight after juice extraction, presenting an environmental problem due to inappropriate disposal. Industrial waste exploitation is a sustainable way to obtain bioproducts and bioenergy. However, the efficiency of chemical treatments and enzymatic cocktails is still a bottleneck in these processes. One potential route to reduce costs is to design consecutive extraction and hydrolysis stages to yield more products from different fractions of the same feedstock, reducing the use of time and bulk materials. This study assessed the economic performance of an orange processing waste (OPW) biorefinery for xylooligosaccharides (XOS), pectin, and bioenergy, involving three aspects: (1) experimental procedures, (2) a simulation approach, and (3) optimization tools. The optimization of hydrothermal treatment for pectin extraction decreased material costs by more than 60% and preserved the xylan content for xylooligosaccharide production by enzymatic hydrolysis. This study analyzed different biorefinery capacities, and solid waste exploitation for heat and steam generation, improving sustainability. The production cost per kg of high‐purity pectin and xylooligosaccharides is 3.67 $ with an efficient solvent recovery and self‐sufficiency for standard power usage. These results proved the economic feasibility and low environmental impact of the OPW biorefinery.

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“…30 Continuous LHW pretreatment of 2G feedstock at a 10 wt % solids loading at 200 °C for 10 min is used to produce XOS and enzymatically digestible cellulignin. 30,67 After LHW pretreatment, the slurry is cooled and filtered to separate the cellulignin from the XOS hydrolysate. The cellulignin is either used for energy generation (XOS-2G) or sent to enzymatic hydrolysis (PDO-XOS).…”

Section: ■ Methodsmentioning

confidence: 99%

Techno-Economic and Environmental Assessments of 1,3-Propanediol and Xylooligosaccharide Production Annexed to a Typical Sugar Mill

van Heerden,

Farzad,

Görgens

2023

ACS Sustainable Chem. Eng.

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Xylo-oligosaccharides, fermentable sugars, and bioenergy production from sugarcane straw using steam explosion pretreatment at pilot-scale

Cited by 27 publications

References 47 publications

Effect of Processing Time of Steam-Explosion for the Extraction of Cellulose Fibers from Phoenix canariensis Palm Leaves as Potential Renewable Feedstock for Materials

Effect of Processing Time of Steam-Explosion for the Extraction of Cellulose Fibers from Phoenix canariensis Palm Leaves as Potential Renewable Feedstock for Materials

Integrated biorefinery for xylooligosaccharides, pectin, and bioenergy production from orange waste

Techno-Economic and Environmental Assessments of 1,3-Propanediol and Xylooligosaccharide Production Annexed to a Typical Sugar Mill

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