Relevant bibliographies by topics / Hydrolysis lignin

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Hydrolysis lignin'

Author: Grafiati
Published: 28 May 2022
Last updated: 30 July 2025

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Journal articles on the topic "Hydrolysis lignin"

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Huang, Yang, Chenhuan Lai, Shaolong Sun, Qiang Yong, Brian K. Via, and Maobing Tu. "Organosolv lignin properties and their effects on enzymatic hydrolysis." BioResources 15, no. 4 (2020): 8909–24. http://dx.doi.org/10.15376/biores.15.4.8909-8924.

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Lignin plays a crucial role in enzymatic hydrolysis of lignocellulosic biomass. To evaluate the correlation between lignin properties and its effects on enzymatic hydrolysis, five organosolv lignins (OLs) were isolated from woody biomass, and their physico-chemical properties and structural features were characterized. The effects of OL addition on enzymatic hydrolysis of microcrystalline cellulose (pure cellulose) were assessed first, which showed their disparate effects. The addition of three OLs increased the 72 h hydrolysis yield by 7.4% to 10.1%, while the addition of other two OLs reduce
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Krutov, Stepan, Elena Ipatova, and Aleksander Vasilyev. "Steam explosion treatments of technical hydrolysis lignin." Holzforschung 71, no. 7-8 (2017): 571–74. http://dx.doi.org/10.1515/hf-2016-0176.

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AbstractTechnical hydrolysis lignins, both freshly obtained and stored longterm under atmosphere conditions, were treated by steam explosion (SE, 235°C/3.2 MPa) for 1, 2, and 3 min. The SE treated lignins were characterized by means of solid-state13C nuclear magnetic resonance (NMR) and Fourier transform infrared (FTIR) spectroscopy. It was found that SE leads to significant changes in morphological and chemical properties of lignin due to oxidation, condensation and hydrolytic destruction.
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Thring, Ronald W., Esteban Chornet, Jean Bouchard, Pierre F. Vidal, and Ralph P. Overend. "Characterization of lignin residues derived from the alkaline hydrolysis of glycol lignin." Canadian Journal of Chemistry 68, no. 1 (1990): 82–89. http://dx.doi.org/10.1139/v90-017.

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Lignin residues from the alkaline hydrolysis of solvolytic lignin have been characterized by elemental analysis, size exclusion chromatography, Fourier transform infrared spectroscopy, 13C NMR, and for methoxyl content. All lignin residues were found to have higher carbon and lower oxygen contents than the original glycol lignin. Methoxyl contents decreased with increasing severity of treatment. All treated lignins have lower molecular weights than the original, which is indicative of the extensive depolymerization of glycol lignin by alkaline hydrolysis. The appearance of new bands in the 305
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Duarte, Ana Paula, Danielle Robert, and Dominique Lachenal. "Eucalyptus globulus Kraft Pulp Residual Lignins. Part 1. Effects of Extraction Methods upon Lignin Structure." Holzforschung 54, no. 4 (2000): 365–72. http://dx.doi.org/10.1515/hf.2000.063.

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Summary Residual lignins of Eucalyptus globulus kraft pulp were shown to be structurally different depending upon the type of extraction chosen. Enzymatic hydrolysis releases a residual lignin with a well preserved etherified structure but substantially contaminated by protein and carbohydrate moieties coming from the enzyme. Moreover, the extraction yield is poor and obviously it does not work as well as in the case of softwood kraft pulp. The residual lignin extracted by acid hydrolysis has less etherified units and more free phenolic functions than that of the enzymatic hydrolysis. It conta
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Duarte, A. P., D. Robert, and D. Lachenal. "Eucalyptus globulus Kraft Pulp Residual Lignin. Part 2. Modification of Residual Lignin Structure in Oxygen Bleaching." Holzforschung 55, no. 6 (2001): 645–51. http://dx.doi.org/10.1515/hf.2001.105.

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Summary Residual lignins were isolated from unbleached and oxygen-bleached Eucalyptus kraft pulps by acid hydrolysis. The structural changes and degradation of residual lignin occurring during kraft pulping and oxygen bleaching were followed and identified by elemental analysis, residual carbohydrate analysis, molecular mass distribution, as well as qualitative and quantitative solution 13C NMR. The dissolved lignins in the kraft cooked and oxygen bleached liquors were also studied and compared with the corresponding residual lignins. Milled wood lignin treated under acid hydrolysis conditions
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Zhang, Jinchao, Chaojun Wu, Dongmei Yu, and Yachong Zhu. "Structural characterization of soluble lignin in the pre-hydrolysis liquor of bamboo-willow dissolving pulp." BioResources 15, no. 1 (2019): 825–39. http://dx.doi.org/10.15376/biores.15.1.825-839.

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The soluble lignin present in the pre-hydrolysis liquor (PHL) is detrimental for value-added utilization of the PHL from production of kraft-based dissolving pulp. In this paper, the soluble lignin was separated from PHL by activated carbon adsorption and subsequent desorption with methanol. The structural characteristics of the soluble and dioxane lignins (from bamboo-willow material) were analyzed by Fourier transform infrared (FTIR) spectroscopy, nuclear magnetic resonance (NMR), and thermogravimetric analysis (TGA). The FTIR and proton-NMR results showed that cleavage of β-O-4 aryl-ether l
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Henry, Christián, Akash Gondaliya, Mark Thies, and Mojgan Nejad. "Studying the Suitability of Nineteen Lignins as Partial Polyol Replacement in Rigid Polyurethane/Polyisocyanurate Foam." Molecules 27, no. 8 (2022): 2535. http://dx.doi.org/10.3390/molecules27082535.

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In this study, nineteen unmodified lignins from various sources (hardwood, softwood, wheat straw, and corn stover) and isolation processes (kraft, soda, organosolv, sulfite, and enzymatic hydrolysis) were used to replace 30 wt.% of petroleum-based polyol in rigid polyurethane/polyisocyanurate (PUR/PIR) foam formulations. Lignin samples were characterized by measuring their ash content, hydroxyl content (Phosphorus Nuclear Magnetic Resonance Spectroscopy), impurities (Inductively Coupled Plasma), and pH. After foam formulation, properties of lignin-based foams were evaluated and compared with a
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Pokryshkin, S. A., Yu A. Sypalova, I. A. Grishanovich, and A. Yu Kozhevnikov. "Effect of the Various Delignification Methods on the Individual Lignin Pyrolysis Products." Eurasian Chemico-Technological Journal 27, no. 2 (2025): 139–48. https://doi.org/10.18321/ectj1661.

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Pyrolysis-gas chromatography-mass spectrometry (Py-GC/MS) was used to analyze a series of the technical and near-native birch lignins. The main monomeric components of lignins and their ratios have been determined. The contribution of the main monomeric units (S/G/H) to the lignin macromolecule was evaluated. Structural fragments are shown, the content of which is significantly influenced by the delignification method. Using RDBE (ring double bond equivalents) vs Cn and van Krevelen diagrams allowed to comprehensively characterize the monomeric composition of lignin pyrolysis products. Differe
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Reznikov, Ivan V., Tatyana A. Savitskaya, and Dmitry D. Grinshpan. "Structure formation in binary systems hydrolysis lignin – oil product and thermochemical transformations of composites on their basis." Journal of the Belarusian State University. Chemistry, no. 1 (March 5, 2020): 3–18. http://dx.doi.org/10.33581/2520-257x-2020-1-3-18.

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Rheological properties of hydrophobized hydrolysis lignin dispersions in tank oil, diesel fuel, and industrial oil were under study. It was found that at the hydrolysis lignin content of more than 20 wt. %, a coagulation-thixotropic structure with a pseudoplastic flow pattern is formed. The parameters of structure formation calculated within the theory of elastic flocks made it possible to characterize dispersions in diesel fuel as least structured. In accordance with the theory of diffusion-limited aggregation, a computer model of the aggregate of hydrolytic lignin particles in diesel fuel wa
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Akim, Leonid G., Dimitris S. Argyropoulos, Lise Jouanin, et al. "Quantitative 31P NMR Spectroscopy of Lignins from Transgenic Poplars." Holzforschung 55, no. 4 (2001): 386–90. http://dx.doi.org/10.1515/hf.2001.064.

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Summary Milled wood lignins isolated from genetically modified poplar trees were studied by quantitative 31P NMR spectroscopy, in combination with thioacidolysis and mild alkaline hydrolysis. The genetic transformation of the trees included down regulation of CAD and COMT enzyme activities. These analyses confirmed that moderate CAD down-regulation does not substantially alter lignin structure. In contrast, severe CAD deficiency alters the lignin structure more profoundly by decreasing the syringyl/guaiacyl ratio and increasing the degree of condensation of the lignin. The most severe alterati
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Dissertations / Theses on the topic "Hydrolysis lignin"

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Madikane, Mzekelo. "Biosulphidogenic hydrolysis of lignin and lignin model compounds." Thesis, Rhodes University, 2002. http://hdl.handle.net/10962/d1003976.

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Lignin degradation under biosulphidogenic conditions has not been extensively reported in the literature. Although aerobic degradation of lignin is well documented, anaerobic biodegradation has focused mainly on methanogenic systems with biosulphidogenic systems receiving less attention. Sulphate reducing bacteria are known to generate moderately high levels of both sulphide and alkalinity at room temperatures, and these conditions draw some comparison with the Kraft pulping process. In the Kraft pulping process, lignin is degraded chemically at ±170°C under high sulphide and alkaline conditio
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Roberts, Virginia Marie. "Homogeneous and heterogeneous catalyzed hydrolysis of lignin." kostenfrei, 2008. http://mediatum2.ub.tum.de/doc/652904/652904.pdf.

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Tan, Xin. "Effect of Organosolv Lignin and Extractable Lignin on Enzymatic Hydrolysis of Lignocelluloses." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1613752000022518.

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Huron, Maïté. "Modélisation cinétique de l'hydrolyse enzymatique de biomasse lignocellulosique." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENI044.

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Le bioéthanol 2G est une alternative viable aux carburants d'origine fossile et de nombreux projets industriels travaillent aujourd'hui à sa mise au point. Il est produit par fermentation des sucres contenus dans la biomasse lignocellulosique (résidus forestiers, résidus agricoles, cultures dédiées…). Ces sucres sont extraits de la biomasse lors d'une étape d'hydrolyse enzymatique, qui fait actuellement partie des points importants à optimiser pour rendre le procédé plus compétitif.L'objectif de cette thèse était de mieux définir les mécanismes mis en jeu lors de l'hydrolyse enzymatique de la
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Goldstein, Steven Alan. "Determination of the degree of condensation of lignin from solvent pulping and steam hydrolysis of tulip poplar." Thesis, Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/20949.

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Mirshokraie, S. Ahmad (Seyed Ahmad). "Reactions of a-substituted non-phenolic lignin model compounds under alkaline hydrolysis conditions." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=75783.

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Side-chain ether groups in lignin model compounds of the general structure 1-(3$ sp prime$,4$ sp prime$-dimethoxyphenyl)-1,2-diaryloxyethane exhibited hydrolytic cleavage (the extent depending on the substituents on the 1-aryloxy groups) in aqueous 2N NaOH at 150$ sp circ$C (i.e. under wood pulping conditions). The level of hydrolysis increased in phenylpropane models (i.e. with $ gamma$-CH$ sb2$OH). Thus the commonly accepted generalization that 1,2-diethers of 3$ sp prime$,4$ sp prime$-dimethyoxyphenylpropane are stable in hot alkali is valid only for 1-alkoxy compounds. The newly observed h
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Nakagame, Seiji. "The influence of lignin on the enzymatic hydrolysis of pretreated biomass substrates." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/29896.

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During the “enzymatic hydrolysis of the cellulose” component of the overall lignocelluloses-to-bioethanol process, lignin has been shown to be a very influential factor, acting as both a physical barrier and limiting hydrolysis through the adsorption of cellulases. Although hydrophobic, electrostatic and hydrogen bonding interactions between lignin and cellulases have been suggested to influence the hydrolysis efficiency, comparative studies using isolated lignins from different types of biomass which have been pretreatment in different ways have not been done. To gain a better understanding o
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Stevens, Gary Grant. "An investigation of the microbial hydrolysis of the lignin carbohydrate complex of grasses." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/53722.

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Thesis (MSc)--University of Stellenbosch, 2004.<br>ENGLISH ABSTRACT: The microbial degradation of the lignin carbohydrate complex of plant material is only partially understood. Lignin carbohydrate complex was extracted from wheat straw and subsequently analysed. An adjustment to the standard protocol was required to increase the amount of lignin carbohydrate complex extracted from wheat straw. Characterization of the lignin carbohydrate complex after trifluoacetic acid hydrolysis was done by capillary electrophoresis. HPLC proved ineffective, as baseline separation could not be achieved
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Hu, Fan. "Pseudo-lignin chemistry in pretreatment of biomass for cellulosic biofuel production." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/52996.

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Pseudo-lignin, which can be broadly defined as aromatic material that yields a positive acid-insoluble (Klason) lignin value, has been reported to generate from biomass polysaccharides during dilute acid pretreatment (DAP). To investigate the fundamental chemistry of pseudo-lignin, a series of state-to-art analytical techniques including GPC, FT-IR and ¹³C NMR were applied to characterize pseudo-lignin extracted from poplar α-cellulose and holocellulose after DAP. The results showed that pseudo-lignin is polymeric (Mn ~ 1000 g/mol; Mw ~ 5000 g/mol) and consists of carbonyl, carboxylic, aromati
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Marabezi, Karen. "Estudo sistemático das reações envolvidas na determinação dos teores de lignina e holocelulose em amostras de bagaço e palha de cana-de-açúcar." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/75/75131/tde-07102009-100309/.

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Os métodos analíticos empregados atualmente para a caracterização química de materiais lignocelulósicos foram desenvolvidos para a madeira e são empregados com pequenas modificações ao bagaço e à palha da cana-de-açúcar. A não existência de metodologia específica para estes materiais leva a obtenção de resultados inadequados e dificultam tanto o planejamento quanto a interpretação de resultados. Sendo assim, o objetivo principal deste trabalho é desenvolver metodologias analíticas específicas para a caracterização química da palha e do bagaço de cana-de-açúcar. A determinação de lignina foi es
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Books on the topic "Hydrolysis lignin"

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Palonen, Hetti. Role of lignin in the enzymatic hydrolysis of lignocellulose. VTT Technical Research Centre of Finland, 2004.

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Agblevor, Foster Aryi. Alkaline hydrolysis and rapid hydrothermolysis of hybrid poplar lignins. 1988.

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Book chapters on the topic "Hydrolysis lignin"

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Shevchenko, Sergey M., Rodger P. Beatson, and John N. Saddler. "The Nature of Lignin from Steam Explosion/Enzymatic Hydrolysis of Softwood." In Twentieth Symposium on Biotechnology for Fuels and Chemicals. Humana Press, 1999. http://dx.doi.org/10.1007/978-1-4612-1604-9_79.

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Nakagame, Seiji, Richard P. Chandra, and Jack N. Saddler. "The Influence of Lignin on the Enzymatic Hydrolysis of Pretreated Biomass Substrates." In ACS Symposium Series. American Chemical Society, 2011. http://dx.doi.org/10.1021/bk-2011-1067.ch006.

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Seminario, Jorge Fajardo, Carlos O. Verdugo, Cesar A. Paltan, and Robin Zuluaga. "Isolation and Characterization of Crystalline Cellulose Nanofibers (CNF’S) from Guadua Angustifolia Kunth (GAK)." In Proceedings of the XV Ibero-American Congress of Mechanical Engineering. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-38563-6_14.

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AbstractThis work aims to isolate and characterize crystalline cellulose nanofibers from a tropical bamboo named guadua angustifolia. A nanofiber extraction methodology was developed that includes: i) a thermomechanical pretreatment by steam explosion, ii) an acid hydrolysis phase, and iii) a disintegration phase using a supermasscolloid grinder. The nanofibers were evaluated for their morphology (SEM) and (AFM), functional groups (FTIR), thermal degradation (TGA) and crystallinity index (XRD). The diameters of the nanofibers ranged from 20 to 60 nm. FTIR analysis determined an effective remov
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van Heiningen, Adriaan, Yusuke Yasukawa, Kefyalew Dido, and Raymond Francis. "Minimizing Precipitated Lignin Formation and Maximizing Monosugar Concentration by Formic Acid Reinforced Hydrolysis of Hardwood Chips." In Hydrothermal Processing in Biorefineries. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-56457-9_18.

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Davison, Brian H., Sadie R. Drescher, Gerald A. Tuskan, Mark F. Davis, and Nhuan P. Nghiem. "Variation of S/G Ratio and Lignin Content in a Populus Family Influences the Release of Xylose by Dilute Acid Hydrolysis." In Twenty-Seventh Symposium on Biotechnology for Fuels and Chemicals. Humana Press, 2006. http://dx.doi.org/10.1007/978-1-59745-268-7_35.

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Thring, R. W., E. Chornet, R. P. Overend, and M. Heitz. "Production and Hydrolytic Depolymerization of Ethylene Glycol Lignin." In ACS Symposium Series. American Chemical Society, 1989. http://dx.doi.org/10.1021/bk-1989-0397.ch017.

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Setiati, Rini, Septoratno Siregar, and Deana Wahyuningrum. "Laboratory Optimization Study of Sulfonation Reaction toward Lignin Isolated from Bagasse." In Biomass [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.93662.

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Bagasse is scientifically defined as waste from the extraction of sugarcane liquid after the grinding process. Bagasse is biomass which is used as raw material to be processed into surfactants. Bagasse fiber cannot be dissolved in water because it consists mostly of cellulose, pentosane and lignin. The optimum conditions for obtaining the highest yield and the best conversion of bagasse to lignin were achieved when used 80 mesh bagasse and 3 M NaOH as a hydrolysis agent. Then lignin is reacted with 0.25 sodium bisulfite to the surfactant sodium lignosulfonate. Lignin and sodium lignosulfonate
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Ramesh, Desikan, Iniya Kumar Muniraj, Kiruthika Thangavelu, and Subburamu Karthikeyan. "Pretreatment of Lignocellulosic Biomass Feedstocks for Biofuel Production." In Advanced Solid Catalysts for Renewable Energy Production. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-3903-2.ch002.

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The shifting of dependence from conventional fuels to renewable fuels and its increased production to combat the energy, environmental, and geopolitical crises is a global concern. One of the viable and promising alternatives is liquid biofuel production using lignocellulosic biomass. Lignocellulosic biomass being the most abundant encompass cellulose, hemicellulose, and lignin.The intricate complex of hemicellulose and lignin around cellulose is the bottleneck in commercializing the biofuel process. To make the cellulose and hemicellulose more accessible for hydrolysis and valorise the underu
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Asada, Chikako, Sholahuddin, and Yoshitoshi Nakamura. "Biorefinery System of Lignocellulosic Biomass Using Steam Explosion." In Cellulose [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98544.

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Recently, plant biomass has been attracting attention due to global warming and the depletion of fossil fuels. Lignocellulosic biomass (i.e., wood, straw, and bagasse) is attracting attention as an abundant renewable resource that does not compete with the food resources. It is composed of cellulose, hemicellulose, and lignin and is a potential resource that can be converted into high-value-added substances, such as biofuels, raw materials for chemical products, and cellulose nanofibers. However, due to its complicated structure, an appropriate pretreatment method is required for developing it
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Obodovych, Oleksandr, and Oleksandr Solovey. "REALITIES AND PROSPECTS FOR INTENSIFICATION OF BIOETHANOL PRODUCTION DUE TO THE USE OF DISCRETE-PULSE ENERGY INPUT." In Integration of traditional and innovation processes of development of modern science. Publishing House “Baltija Publishing”, 2020. http://dx.doi.org/10.30525/978-9934-26-021-6-37.

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The development of the biofuel industry and the production of bioethanol and using it as a fuel in the world in general and in Ukraine in particular are analyzed in the paper. Bioethanol is mostly produced from sugar- and starch-containing raw materials. It is noted that bioethanol is obtained mainly from molasses in Ukraine. Molasses is a by-product of sugar beet production. The prospects of second-generation bioethanol production made from unfit for human consumption lignocellulosic biomass such as agricultural by-products, forestry residues, municipal waste are considered. Pretreatment of l
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Conference papers on the topic "Hydrolysis lignin"

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Bordun, Ihor, Myroslav Malovanyy, Nazar Nahurskyi, and Anatoliy Borysiuk. "Synthesis, Structure and Magnetic Properties of Carbon Composites Based on Finely Dispersed Powders of Different Valence Iron Oxides." In 8th International Congress "Environment Protection. Energy Saving. Sustainable Environmental Management". Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-09oeek.

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A method for the synthesizing of carbon composites based on hydrolysis lignin powders and iron oxides (FeO and Fe₂O₃) was proposed in this work. The obtained composites were studied by X-ray diffractometry, adsorption/desorption gas porometry and magnetometry. X-ray phase analysis has revealed the presence of an amorphous carbon phase and crystalline phases of FeO, Fe3O4, Fe2O3, and Fe in both types of synthesised composites. The synthesized composites demonstrated significantly higher specific magnetisation values compared to the initial iron oxide powders. For Fe₂O₃ powder, the specific magn
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Stepacheva, Antonina, Mariia Markova, Oleg Manaenkov, Elena Shimanskaya, and Valentina Matveeva. "SAWDUST LIQUIEFACTION OVER SCHUNGITE-BASED CATALYST." In 24th SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/4.1/s17.26.

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The deep processing of lignocellulose feedstock (including waste from the woodworking industry, agriculture, and agro-industry) allowing the high-added value products to be obtained is one of the key scientific problems. Lignocellulose biomass is a potential feedstock for the production of heat, electricity, fuel, chemicals, and other bioderived products. The liquefaction is considered to be one of the most promising ways to convert lignocellulose biomass into liquid fuels. During the liquefaction, lignocellulose biomass can be efficiently converted into important base compounds, such as furfu
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Di Mario, J., M. A. Gambelli, D. Del Buono, C. Emiliani, and G. Gigliotti. "BREWERY�S SPENT GRAIN BIOREFINERY: A SUSTAINABLE APPROACH TO RECOVER VALUABLE MOLECULES AND PRODUCE GREEN ENERGY." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024v/4.2/s17.12.

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Biorefineries offer an advantageous and sustainable solution for managing by-products from the agro-industry while enabling the recovery of valuable molecules and biogas production from residual biomass. This study applied this approach to the beer industry's main by-products: Brewery�s Spent Grain (BSG). BSG is typically used as animal feed but shows potential for biorefinery applications due to its high protein content and favorable C/N ratio. By treating this biomass with an ionic liquid consisting of triethylamine and sulphuric acid, nanostructured lignin (LN) was extracted and recovered,
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Zheng, Mingfeng, Xinxiu Liu, Xiansu Cheng, Fangming Jin, Qi Zhou, and Bing Wu. "Graft Copolymerization of Enzymatic Hydrolysis Lignin and Maleic Anhydride." In 2nd International Symposium on Aqua Science, Water Resource and Low Carbon Energy. AIP, 2010. http://dx.doi.org/10.1063/1.3529314.

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Kozlov, I. A., V. A. Pashinin, and P. I. Sukhov. "Saving Humanity from Global Warming. New Ecologically Balanced Catalytic Method for Processing of Renewable Plant Raw Materials: Quantitative 1H and 13C NMR Spectroscopy." In International scientific and practical conference “Smart cities and sustainable development of regions” (SMARTGREENS 2024). Crossref, 2025. https://doi.org/10.63550/iceip.2025.1.1.131.

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The most high-tonnage product of processing vegetable raw materials is cellulose. Currently, sulfate cooking is the most common method of pulp production. However, this method is extremely toxic and has a huge negative impact on the environment. An alternative to this is a catalytic process. Catalysts reduce harmful emissions into the atmosphere by up to 80%. During cellulose cooking, the most important chemical reaction is the destruction (hydrolysis) of lignin macromolecules. A comparative study of the macromolecular structure of pine dioxane lignin and lignins obtained by various methods of
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Belovezhets, L. A., M. S. Tretyakova, and Yu A. Markova. "An integrated approach to design of new biotechnological products to reduce man-induced load on environment." In 2nd International Scientific Conference "Plants and Microbes: the Future of Biotechnology". PLAMIC2020 Organizing committee, 2020. http://dx.doi.org/10.28983/plamic2020.040.

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Chen, Yunping, Renjin Gao, and Ting Chen. "Oxidation degradation of enzymatic hydrolysis lignin by tungstophosphoric acid catalysis." In 2011 International Conference on Remote Sensing, Environment and Transportation Engineering (RSETE). IEEE, 2011. http://dx.doi.org/10.1109/rsete.2011.5965967.

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Hassan, Nur Syakilla, and Khairiah Haji Badri. "Lignin recovery from alkaline hydrolysis and glycerolysis of oil palm fiber." In THE 2014 UKM FST POSTGRADUATE COLLOQUIUM: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2014 Postgraduate Colloquium. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4895236.

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Livcha, Sandra, Galia Shulga, Elina Zhilinska, et al. "Lignin from Hydrolyzed Wood By-Product as an Eco-Friendly Emulsion Stabilizer." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.033.

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Aspen sulfur-free soda lignin was obtained as a result of alkaline delignification of hydrolyzed sawdust, a by-product of wood mechanical processing. The pre-hydrolysis of aspen sawdust was performed for enhancing the yield of lignin from the wood residue as well as to decrease the energy consumption of its milling for obtaining a filler for composites. The obtained lignin was characterized by a chemical composition, particle sizes and zeta potential values as well as by the surface-active properties at the air-water and oil-water interfaces. The surface tension of the lignin solutions at the
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Andersone, Anna, Alexander Arshanitsa, Lilija Jashina, Māris Lauberts, Tatiana Dizhbite, and Galina Telysheva. "EFFECTS OF CONTENTS AND COMPONENT COMPOSITION OF ASH AND ORGANIC CONSTITUENTS ON FUEL CHARACTERISTICS OF SOFTWOOD AND WHEAT STRAW HYDROLYTIC PROCESSING RESIDUES." In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.087.

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Processing of biomass for obtaining of liquid ethanol, platform chemicals and solid biofuel, is topical biorefinery schema intensively developing. Acid hydrolysis, separated hydrolysis and fermentation, and simultaneous saccharification and fermentation are integrated with other treatments for the advanced technology development. The aim of this work was estimation of effect of softwood and wheat straw hydrolysis type on fuel characteristics of rich-in-lignin residues with emphasis on content and component composition of ash and feedstock. Elemental Analysis; Atomic absorption spectroscopy; ca
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Reports on the topic "Hydrolysis lignin"

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Teeradakorn, Siriluk. Pretreatment and hydrolysis conditioning process of cellulosic material for bioethanol production. Chulalongkorn University, 2012. https://doi.org/10.58837/chula.res.2012.81.

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Sweet sorghum straw is lignocellulosic material that is promoted as an alternative feedstock for ethanol production because it is available and inexpensive. Due to its composition of cellulose and hemicelluloses, that could be hydrolyzed into fermentable sugars. The composition of sweet sorghum straw used in this study consists of 44.51% cellulose, 38.12% hemicelluloses and 6.18% lignin. Conversion of this potential feedstock requires a pretreatment step to alter the microscopic size and structure of the lignocelluloses. This research was studied in order to find the optimum conditions on hydr
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