A review of sugarcane bagasse for second‐generation bioethanol and biopower production

Bezerra, Tais Lacerda; Ragauskas, Art J.

doi:10.1002/bbb.1662

Cited by 218 publications

(117 citation statements)

References 98 publications

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“…The degree of branching in hemicellulose is usually represented by the arabinose/xylose ratio; the lower the ratio the higher the degree of polymerization. Arabinose/xylose ratio for rice straw is approximately ~ 0.17 in comparison of 0.2 for bagasse . Different methods were used to isolate and characterize hemicellulose from lignocellulosic biomass like hydrogen peroxide, alkali, alcohol, and a combination of alcohol/alkali hydrolysis (Table ).…”

Section: Hemicellulosementioning

confidence: 99%

Rice straw as a feedstock for biofuels: Availability, recalcitrance, and chemical properties

Satlewal

Agrawal

Bhagia

et al. 2017

Biofuels Bioprod Bioref

154

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The surplus availability of rice straw, its limited usage, and environmental pollution caused by its ineffi cient burning has fostered research for its valorization to biofuels. This review elucidates the current status of rice straw potential around the globe along with recent advances in revealing the critical factors responsible for its recalcitrance and chemical properties. The role and accumulation of high silica content in rice straw has been elucidated with its impact on enzymatic hydrolysis in a biorefi nery environment. The correlation of different pre-treatment approaches in modifying the physiochemical properties of rice straw and improving the enzymatic accessibility has also been discussed. This study highlights new challenges, resolutions, and opportunities for rice straw based biorefi neries.

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Section: Hemicellulosementioning

confidence: 99%

Rice straw as a feedstock for biofuels: Availability, recalcitrance, and chemical properties

Satlewal

Agrawal

Bhagia

et al. 2017

Biofuels Bioprod Bioref

154

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“…[1][2][3][4][5] Recently, the classical soda treatment has proven to produce bagasse pulps that were adequate for cellulose nanofibril (CNF) manufacturing, and with potential for three-dimensional (3D) printing of biomedical devices. Fractionation of bagasse to separate cellulose, hemicelluloses, and lignin, has been tested under different conditions and processes, with the aim of obtaining products of higher value than conventional paper.…”

Section: Introductionmentioning

confidence: 99%

Wide range humidity sensors printed on biocomposite films of cellulose nanofibril and poly(ethylene glycol)

Syrový

Maronová

Kuberský

et al. 2019

J of Applied Polymer Sci

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Cellulose nanofibril (CNF) films were prepared from side streams generated by the sugarcane industry, that is, bagasse. Two fractionation processes were utilized for comparison purposes: (1) soda and (2) hot water and soda pretreatments. 2,2,6,6-Tetramethylpiperidinyl-1-oxyl-mediated oxidation was applied to facilitate the nanofibrillation of the bagasse fibers. Poly(ethylene glycol) (PEG) was chosen as plasticizer to improve the ductility of CNF films. The neat CNF and biocomposite films (CNF and 40% PEG) were used for fabrication of self-standing humidity sensors. CNF-based humidity sensors exhibited high change of impedance, within four orders of magnitude, in response to relative humidity (RH) from 20 to 90%. The use of plasticizer had an impact on sensor kinetics. While the biocomposite film sensors showed slightly longer response time, the recovery time of these plasticized sensors was two times shorter in comparison to sensors without PEG. This study demonstrated that agroindustrial side streams can form the basis for high-end applications such as humidity sensors, with potential for, for example, packaging and wound dressing applications.

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“…BRICS countries dominate the global sugar market [14]. SA has the largest sugar industry in African continent, making substantial contribution to the development of national economy [15].…”

Section: Introductionmentioning

confidence: 99%

Multi-product biorefineries from lignocelluloses: a pathway to revitalisation of the sugar industry?

Farzad

Mandegari

Guo

et al. 2017

Biotechnol Biofuels

178

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BackgroundDriven by a range of sustainability challenges, e.g. climate change, resource depletion and expanding populations, a circular bioeconomy is emerging and expected to evolve progressively in the coming decades. South Africa along with other BRICS countries (Brazil, Russia, India and China) represents the emerging bioeconomy and contributes significantly to global sugar market. In our research, South Africa is used as a case study to demonstrate the sustainable design for the future biorefineries annexed to existing sugar industry. Detailed techno-economic evaluation and Life Cycle Assessment (LCA) were applied to model alternative routes for converting sugarcane residues (bagasse and trash) to selected biofuel and/or biochemicals (ethanol, ethanol and lactic acid, ethanol and furfural, butanol, methanol and Fischer–Tropsch synthesis, with co-production of surplus electricity) in an energy self-sufficient biorefinery system.ResultsEconomic assessment indicated that methanol synthesis with an internal rate of return (IRR) of 16.7% and ethanol–lactic acid co-production (20.5%) met the minimum investment criteria of 15%, while the latter had the lowest sensitivity to market price amongst all the scenarios. LCA results demonstrated that sugarcane cultivation was the most significant contributor to environmental impacts in all of the scenarios, other than the furfural production scenario in which a key step, a biphasic process with tetrahydrofuran solvent, had the most significant contribution.ConclusionOverall, the thermochemical routes presented environmental advantages over biochemical pathways on most of the impact categories, except for acidification and eutrophication. Of the investigated scenarios, furfural production delivered the inferior environmental performance, while methanol production performed best due to its low reagent consumption. The combined techno-economic and environmental assessments identified the performance-limiting steps in the 2G biorefinery design for sugarcane industry and highlighted the technology development opportunities under circular bioeconomy context.Electronic supplementary materialThe online version of this article (doi:10.1186/s13068-017-0761-9) contains supplementary material, which is available to authorised users.

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A review of sugarcane bagasse for second‐generation bioethanol and biopower production

Cited by 218 publications

References 98 publications

Rice straw as a feedstock for biofuels: Availability, recalcitrance, and chemical properties

Rice straw as a feedstock for biofuels: Availability, recalcitrance, and chemical properties

Wide range humidity sensors printed on biocomposite films of cellulose nanofibril and poly(ethylene glycol)

Multi-product biorefineries from lignocelluloses: a pathway to revitalisation of the sugar industry?

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