Production of biofuel precursors and value-added chemicals from hydrolysates resulting from hydrothermal processing of biomass: A review

Torres-Mayanga, Paulo César; Lachos‐Perez, Daniel; Mudhoo, Ackmez; Kumar, Sunil; Brown, Avery B.; Tyufekchiev, Maksim; Dragone, Giuliano; Mussatto, Solange I.; Rostagno, Maurı́cio A.; Timko, Michaël T.; Forster‐Carneiro, Tânia

doi:10.1016/j.biombioe.2019.105397

Cited by 71 publications

(20 citation statements)

References 293 publications

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“…Among the sugars detected, the most abundant one was xylose, accounting for 64% of the total sugars contained in the acid hydrolysate. Therefore, this hydrolysate shows potential to be used as media for xylitol production, as xylitol can be biologically generated from xylose through fermentation with different microorganisms [4,5]. The inhibitor compounds composition of the EOP hydrolysate is also shown in Table 1.…”

Section: Methodsmentioning

confidence: 99%

“…However, due to the complexity of this chemical process, the need for pure xylose as feedstock and the associated high-energy requirements [3], novel biological processes, where xylitol is produced by xylose fermentation with microorganisms, have emerged. These alternative processes can be more environmentally friendly and lower energy consumption, making biological production of xylitol economically viable [4,5]. To reach these objectives, the use of xylose sources coming from lignocellulosic biomass residues, originating in different industrial sectors (in many cases abundant and of low economic value), can be an important contribution.…”

Section: Introductionmentioning

confidence: 99%

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Xylitol Production from Exhausted Olive Pomace by Candida boidinii

et al. 2020

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In this work, the production of xylitol from a hemicellulosic hydrolysate of exhausted olive pomace (EOP), a residue originated in the olive oil production process by Candida boidinii, was assessed. The hydrolysate was obtained by dilute acid pretreatment of EOP at 170 °C and 2% H2SO4 (w/v). A previous detoxification step of the hydrolysate was necessary, and its treatment with activated charcoal and ion-exchange resin was evaluated. Prior to fermentation of the hydrolysate, fermentation tests in synthetic media were performed to determine the maximum xylitol yield and productivity that could be obtained if inhibitory compounds were not present in the medium. In addition, the glucose existing in the media exerted a negative influence on xylitol production. A maximum xylitol yield of 0.52 g/g could be achieved in absence of inhibitor compounds. Fermentation of the hemicellulosic hydrolysate from EOP after detoxification with ion-exchange resin resulted in a xylitol yield of 0.43 g/g.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Xylitol Production from Exhausted Olive Pomace by Candida boidinii

et al. 2020

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“…[4] Biomass has gained notable importance since it can be considered as a renewable, abundant, and low-cost raw material for the production of biofuels and add-value chemicals. [5,6] An important product obtained from fast pyrolysis of biomass is the socalled bioÀ oil. [7,8] However, due to its complex composition, bioÀ oil displays several undesirable characteristics such as chemical and thermal instability, corrosivity and low calorific values.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ni Metal Content on Emulsifying Properties of Ni/CNTox Catalysts for Catalytic Conversion of Furfural in Pickering Emulsions

et al. 2020

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Ni/CNTox catalysts with variable metal content have been prepared to investigate their emulsifying and catalytic properties for the liquid‐phase conversion of furfural. The solid catalysts and emulsions were analyzed by several characterization techniques. The catalytic activity linearly increased with increasing Ni content (up to 10 wt.%) before dropping down again for a Ni content of 15 wt.%. The loss of catalytic activity was attributed to larger emulsion droplets formed by the inhibition of hydrophilic sites. All Ni/CNTox catalysts were highly selective to cyclopentanone as a main product, while several changes regarding secondary products were observed. Ni/CNTox catalysts with a Ni content up to 10 wt.% favor the formation of levulinic acid, while catalysts with a Ni content of 15 wt.% were selective to tetrahydrofurfuryl alcohol. This was attributed to an inhibition of the acid sites thus favoring the catalyst's hydrogenation capacity.

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“…The continuous and rapidly increasing demand for energy has resulted in more innovative, efficient upgrading and valorization of renewable feedstocks such as biomass [4], [5]. Although all the potential, there are several challenges to develop cost-efficient and large-scale processes to apply renewable resources for sustainable energy development [6]. Particularly, special attention should be placed on the production of fuels and value-added chemicals.…”

Section: Introductionmentioning

confidence: 99%

“…The utilization of the most abundant biomass resource, lignocellulosic biomass, represents an attractive and promising strategy for green and sustainable energy production due to due to its low cost, carbohydrate-rich constitution [6], [8], [9]. Moreover, the utilization of lignocellulosic biomass avoids the food-versus-fuel debate and can significantly reduce the emissions of the major greenhouse gas, CO 2 [10].…”

Section: Introductionmentioning

confidence: 99%

Common Reactions of Furfural to scalable processes of Residual Biomass

Rodrı́guez¹,

Rache²,

Brijaldo³

et al. 2020

Cienc. En Desarro.

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Energy and the environment will always play key roles in society. The climate emergency cannot be ruled out to enable the transition for a clean energy future. Currently, non-renewable energy resources are declining, therefore is important to continuously explore renewable resources. Biomass is a renewable resource that can be applied to reduce climate changes and to accomplhish emission policies. Cellulose is the most abundant type of biomass worldwide, which can be transformed into biofuels and potential building block platform molecules (e.g furfural) throughout biological or chemical methods. Furfural can be synthetized from cellulose using hydrolysis and dehydration reactions. Furfural has a furan ring and carbonyl functional group which makes it an important intermediary to produce higher value-added molecules at industrial level. These molecules include gasoline, diesel and jet fuel. However, furfural can also be transformed by hydrogenation, oxidation, decarboxylation and condensation reactions. The selective hydrogenation of furfural produces furfuryl alcohol, an important industrial compound, which is widely employed in the production of resins, fibers, and is considered an essential product for pharmaceutical applications. On the other hand, the oxidation of furfural produces furoic acid which is appliedin the agrochemical industry, where it is commonly transformed to furoyl chloride which is finally used in the production of drugs and insecticides. The oxidation and reduction of furfural can carry out through heterogeneous and homogeneous catalysis, and biocatalysis. Selectivity is an important issue in furfural hydrogenation and oxidation reactions since different products can be obtained by using monometallic or bimetallic catalysts and/or different catalyst supports. In biocatalysis approach, different enzymes, complete cells, tools of modern biotechnology, DNA sequencing, regulation of metabolic networks, overexpression of genes that encode enzymes of interest and optimization of the cellular properties of the microorganism are used. Herein, a review on the current status of furfuryl alcohol and furoic acid production from furfural by heterogeneous catalysis and biocatalysis has been studied. The stability, selectivity and activity of catalystsalong with the different furfural oxidation and reduction conditions have been pointed out. Additionally, the main enzymes, microorganisms and mechanism involved in the furfural degradation process have also been discussed.

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Production of biofuel precursors and value-added chemicals from hydrolysates resulting from hydrothermal processing of biomass: A review

Cited by 71 publications

References 293 publications

Xylitol Production from Exhausted Olive Pomace by Candida boidinii

Xylitol Production from Exhausted Olive Pomace by Candida boidinii

Effect of Ni Metal Content on Emulsifying Properties of Ni/CNTox Catalysts for Catalytic Conversion of Furfural in Pickering Emulsions

Common Reactions of Furfural to scalable processes of Residual Biomass

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