Integration of (Hemi)-Cellulosic Biofuels Technologies with Chemical Pulp Production

Stoklosa, Ryan J.; Hodge, David B.

doi:10.1016/b978-0-444-59498-3.00004-x

Cited by 23 publications

(20 citation statements)

References 121 publications

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“…Due to the recalcitrance of LCB, a costly pretreatment step is required, which is the main technological bottleneck of 2G bioethanol production. The release of enzymatic and fermentation inhibitors during pretreatment is another limitation [9].Pulp and paper mills have the infrastructures and logistics to handle LCB, and chemical mills employ technology required for LCB fractionation and conversion [10]. Bioethanol has been produced from different feedstocks such as Kraft pulp, spent sulfite liquor, and pulp and paper sludge [11].…”

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confidence: 99%

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Ethanol Production from Hydrolyzed Kraft Pulp by Mono- and Co-Cultures of Yeasts: The Challenge of C6 and C5 Sugars Consumption

et al. 2020

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Second-generation bioethanol production's main bottleneck is the need for a costly and technically difficult pretreatment due to the recalcitrance of lignocellulosic biomass (LCB). Chemical pulping can be considered as a LCB pretreatment since it removes lignin and targets hemicelluloses to some extent. Chemical pulps could be used to produce ethanol. The present study aimed to investigate the batch ethanol production from unbleached Kraft pulp of Eucalyptus globulus by separate hydrolysis and fermentation (SHF). Enzymatic hydrolysis of the pulp resulted in a glucose yield of 96.1 ± 3.6% and a xylose yield of 94.0 ± 7.1%. In an Erlenmeyer flask, fermentation of the hydrolysate using Saccharomyces cerevisiae showed better results than Scheffersomyces stipitis. At both the Erlenmeyer flask and bioreactor scale, co-cultures of S. cerevisiae and S. stipitis did not show significant improvements in the fermentation performance. The best result was provided by S. cerevisiae alone in a bioreactor, which fermented the Kraft pulp hydrolysate with an ethanol yield of 0.433 g·g −1 and a volumetric ethanol productivity of 0.733 g·L −1 ·h −1 , and a maximum ethanol concentration of 19.24 g·L −1 was attained. Bioethanol production using the SHF of unbleached Kraft pulp of E. globulus provides a high yield and productivity.Energies 2020, 13, 744 2 of 15 sustainability, has a low and stable price, and practically does not demand extra land [6,7]. There are some facilities producing 2G bioethanol on a commercial scale. However, large-scale production still faces some technological barriers that must be overcome in order to achieve a cost-competitive production [8]. Due to the recalcitrance of LCB, a costly pretreatment step is required, which is the main technological bottleneck of 2G bioethanol production. The release of enzymatic and fermentation inhibitors during pretreatment is another limitation [9].Pulp and paper mills have the infrastructures and logistics to handle LCB, and chemical mills employ technology required for LCB fractionation and conversion [10]. Bioethanol has been produced from different feedstocks such as Kraft pulp, spent sulfite liquor, and pulp and paper sludge [11]. Chemical pulping processes can be considered as a LCB pretreatment since they promote delignification and target hemicelluloses to some degree [12]. Chemical pulping represents about 77% of the virgin pulps produced globally, and more than 95% of these chemical pulps are Kraft pulps [13]. These pulps are produced by Kraft pulping involving the reaction of white liquor, i.e., an alkaline aqueous solution of sodium hydroxide and sodium sulfide with a pH of 14, with lignin at high temperature (150-170 • C). This reaction promotes lignin breakdown and degradation with the release of phenolic fragments, removing almost 90% of the lignin from the wood. Kraft pulping also leads to hemicelluloses and some cellulose loss and decreases the degree of polymerization of cellulose [14]. The utilization of Kraft pulping as a pretreatment method for LCB has ...

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“…Pulp and paper mills have the infrastructures and logistics to handle LCB, and chemical mills employ technology required for LCB fractionation and conversion [10]. Bioethanol has been produced from different feedstocks such as Kraft pulp, spent sulfite liquor, and pulp and paper sludge [11].…”

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confidence: 99%

Ethanol Production from Hydrolyzed Kraft Pulp by Mono- and Co-Cultures of Yeasts: The Challenge of C6 and C5 Sugars Consumption

et al. 2020

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“…Average market selling price (€/t) Glucose 355.0 26,41 Lignin 530.6 [42][43][44][45][46] Hemicellulose 105.4 [47][48][49] Bioethanol 830.5 [50][51][52][53][54] Furfural 865.3 [55][56][57][58][59][60] Acetic acid 834.2 [61][62][63][64] Modeling and Analysis: Lignocellulosic biorefinery life-cycle assessment S Bello et al…”

Section: Productmentioning

confidence: 99%

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

Bello

Ríos

Feijoo

et al. 2018

Biofuels Bioprod Bioref

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The exploitation of lignocellulosic materials with the aim of producing high value‐added products will potentially counteract concerns such as depletion of fossil resources or exponential population growth. The present study focuses on the assessment of an integrated process based on organosolv fractionation of residual beech woodchips, with the objective of implementing concepts such as circular economy or process integration. The life‐cycle assessment (LCA) methodology and the eco‐efficiency concept allow for a holistic analysis of sustainability in terms of the system's environmental approach. The results show that the pre‐treatment of biomass together with the energy demands of the process and enzyme production constitute the hotspots of the system. Analyzing the system by means of the ecoefficiency indicator demonstrates that broadening the multi‐production spectrum of a biorefinery provides better results when production volume and processing steps fit environmental and techno‐economical requirements. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd

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“…A billion tons of dry biomass per annum (sufficient to displace ≈30 % of petroleum consumption in the USA) produced in the USA without a negative impact on the production of food, feed, or fiber crops . The complex structure of lignocellulosic biomass (lignin, cellulose, and hemicellulose) remains a challenge for processing; lignin is the most technically challenging to process because of its complex chemical network and recalcitrant nature, despite rapidly developing advanced deconstruction strategies .…”

Section: Introductionmentioning

confidence: 99%

Hydro(deoxygenation) Reaction Network of Lignocellulosic Oxygenates

Dutta

2020

ChemSusChem

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He has more than 10 years of professional academic research experience in nano-and biocatalysis, porous and framework materials, and electrochemistry.T he last eight years of his research has centered on the chemistry of lignocellulose, lignocellulose-derived materials, enzymatic processes, and understanding of their chemical reaction networks. He is currently interested in biocomposite materials research for therapeutic and related applications. This also includes materials for electrochemical energy generation and biomass-derived novel materials for advanced applications. Figure 2. Biomass (cellulose) to alkane conversion through HDO and hydrogenolysis-based reaction scanned by using the vibrational properties of absorbed molecules on the catalyst surface, as elucidated by combined INS/DFT analysis.

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Integration of (Hemi)-Cellulosic Biofuels Technologies with Chemical Pulp Production

Cited by 23 publications

References 121 publications

Ethanol Production from Hydrolyzed Kraft Pulp by Mono- and Co-Cultures of Yeasts: The Challenge of C6 and C5 Sugars Consumption

Ethanol Production from Hydrolyzed Kraft Pulp by Mono- and Co-Cultures of Yeasts: The Challenge of C6 and C5 Sugars Consumption

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

Hydro(deoxygenation) Reaction Network of Lignocellulosic Oxygenates

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