Готові списки джерел за темами / Digestion of lignocellulosic biomass

Добірка наукової літератури з теми "Digestion of lignocellulosic biomass"

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Опубліковано: 6 вересня 2023

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Статті в журналах з теми "Digestion of lignocellulosic biomass"

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Taggar, Monica Sachdeva. "Insect cellulolytic enzymes: Novel sources for degradation of lignocellulosic biomass." Journal of Applied and Natural Science 7, no. 2 (December 1, 2015): 625–30. http://dx.doi.org/10.31018/jans.v7i2.656.

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Alternative and renewable fuels derived from lignocellulosic biomass offer the potential to reduce our dependence on fossil fuels and mitigate global climate change. Cellulose is one of the major structural components in all lignocellulosic wastes and enzymatic depolymerization of cellulose by cellulases is an essential step in bio-ethanol production. Wood-degrading insects are potential source of biochemical catalysts for converting wood lignocellulose into biofuels. Cellulose digestion has been demonstrated in more than 20 insect families representing ten distinct insect orders. Termite guts been have considered as the “world’s smallest bioreactors” since they digest a significant proportion of cellulose (74-99%) and hemicellulose (65-87%) components of lignocelluloses they ingest. The lower termites harbor protistan symbionts in hindgut whereas higher termites lack these in the hind gut. Studies on cellulose digestion in termites and other insects with reference to ligno-cellulose degrading enzymes have been well focused in this review. The studies on insect cellulolytic systems can lead to the discovery of a variety of novel biocatalysts and genes that encode them, as well as associated unique mechanisms for efficient biomass conversion into biofuels.
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Li, Renfei, Wenbing Tan, Xinyu Zhao, Qiuling Dang, Qidao Song, Beidou Xi, and Xiaohui Zhang. "Evaluation on the Methane Production Potential of Wood Waste Pretreated with NaOH and Co-Digested with Pig Manure." Catalysts 9, no. 6 (June 17, 2019): 539. http://dx.doi.org/10.3390/catal9060539.

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Wood waste generated during the tree felling and processing is a rich, green, and renewable lignocellulosic biomass. However, an effective method to apply wood waste in anaerobic digestion is lacking. The high carbon to nitrogen (C/N) ratio and rich lignin content of wood waste are the major limiting factors for high biogas production. NaOH pre-treatment for lignocellulosic biomass is a promising approach to weaken the adverse effect of complex crystalline cellulosic structure on biogas production in anaerobic digestion, and the synergistic integration of lignocellulosic biomass with low C/N ratio biomass in anaerobic digestion is a logical option to balance the excessive C/N ratio. Here, we assessed the improvement of methane production of wood waste in anaerobic digestion by NaOH pretreatment, co-digestion technique, and their combination. The results showed that the methane yield of the single digestion of wood waste was increased by 38.5% after NaOH pretreatment compared with the untreated wood waste. The methane production of the co-digestion of wood waste and pig manure was higher than that of the single digestion of wood waste and had nonsignificant difference with the single-digestion of pig manure. The methane yield of the co-digestion of wood waste pretreated with NaOH and pig manure was increased by 75.8% than that of the untreated wood waste. The findings indicated that wood waste as a sustainable biomass source has considerable potential to achieve high biogas production in anaerobic digestion.
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Adney, William S., Christopher J. Rivard, Ming Shiang, and Michael E. Himmel. "Anaerobic digestion of lignocellulosic biomass and wastes." Applied Biochemistry and Biotechnology 30, no. 2 (August 1991): 165–83. http://dx.doi.org/10.1007/bf02921684.

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Rahimi-Ajdadi, Fatemeh, and Masoomeh Esmaili. "Effective Pre-Treatments for Enhancement of Biodegradation of Agricultural Lignocellulosic Wastes in Anaerobic Digestion – A Review." Acta Technologica Agriculturae 23, no. 3 (September 1, 2020): 105–10. http://dx.doi.org/10.2478/ata-2020-0017.

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AbstractAgricultural crop residues like stems, straws and leaves are valuable resources for biofuel production, especially methane, due to anaerobic digestion. Biogas from agricultural lignocellulosic wastes is capable of attaining sustainable energy yields without environmental pollution. Farmers in many developing countries burn these wastes throughout their fields, imposing environmental hazard due to emission of greenhouse gases. The main problem in this field is the recalcitrance of the agricultural lignocellulose waste that limits its enzymatic degradation and hydrolysis efficiency and consequently decreases biogas production. Therefore, efficient pre-treatments prior to anaerobic digestion are essential. Various pre-treatment methods are used for increasing the anaerobic digestibility of lignocellulose biomass, such as physical (mechanical, thermal, etc.), chemical, biological and combined pre-treatments. This paper reviews different pre-treatments used in anaerobic digestion for the agricultural lignocellulosic wastes and explains the advantages and disadvantages of each. The most frequently used pre-treatments for main agricultural wastes in process of biogas production are also introduced.
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Gnanambal, Venkatachalam Sundaresan, and Krishnaswamy Swaminathan. "Biogas production from renewable lignocellulosic biomass." International Journal of Environment 4, no. 2 (June 3, 2015): 341–47. http://dx.doi.org/10.3126/ije.v4i2.12662.

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Effect of raw and biologically treated lignocellulosic biomass using cow dung slurry for biogas production is reported. Biomass is an energy source. Water containing biomass such as sewage sludge, cow dung slurry and lignocellulosic waste, has several important advantages and one of the key feature is renewability. Cow dung slurry has the potential to produce large amounts of biogas. Four categories of bacteria viz., hydrolytic, fermentative, fermentative acidogenic and acidogenic-methanogenic bacteria are involved in the production of biogas. The different characteristics of the cow dung slurry were determined according to standard methods. Hemicellulose, cellulose and lignin content of the lignocellulosic waste were also determined in our earlier studies. The substrates were digested under anaerobic condition for 5 days. The total biogas and methane produced during anaerobic digestion were estimated on 5th day. The total biogas produced during digestion was estimated by water displacement method. Biological methane production was estimated by using Saccharometer. DOI: http://dx.doi.org/10.3126/ije.v4i2.12662 International Journal of Environment Vol.4(2) 2015: 341-347
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Ahmed, Banafsha, Kaoutar Aboudi, Vinay Kumar Tyagi, Carlos José Álvarez-Gallego, Luis Alberto Fernández-Güelfo, Luis Isidoro Romero-García, and A. A. Kazmi. "Improvement of Anaerobic Digestion of Lignocellulosic Biomass by Hydrothermal Pretreatment." Applied Sciences 9, no. 18 (September 13, 2019): 3853. http://dx.doi.org/10.3390/app9183853.

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Анотація:
Lignocellulosic biomass, comprising of cellulose, hemicellulose, and lignin, is a difficult-to-degrade substrate when subjected to anaerobic digestion. Hydrothermal pretreatment of lignocellulosic biomass could enhance the process performance by increasing the generation of methane, hydrogen, and bioethanol. The recalcitrants (furfurals, and 5-HMF) could be formed at high temperatures during hydrothermal pretreatment of lignocellulosic biomass, which may hinder the process performance. However, the detoxification process involving the use of genetically engineered microbes may be a promising option to reduce the toxic effects of inhibitors. The key challenge lies in the scaleup of the hydrothermal process, mainly due to necessity of upholding high temperature in sizeable reactors, which may demand high capital and operational costs. Thus, more efforts should be towards the techno-economic feasibility of hydrothermal pre-treatment at full scale.
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Agregán, Rubén, José M. Lorenzo, Manoj Kumar, Mohammad Ali Shariati, Muhammad Usman Khan, Abid Sarwar, Muhammad Sultan, Maksim Rebezov, and Muhammad Usman. "Anaerobic Digestion of Lignocellulose Components: Challenges and Novel Approaches." Energies 15, no. 22 (November 10, 2022): 8413. http://dx.doi.org/10.3390/en15228413.

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Анотація:
The reuse of lignocellulosic biomaterials as a source of clean energy has been explored in recent years due to the large amount of waste that involves human activities, such as those related to agriculture and food. The anaerobic digestion (AD) of plant-based biomass for bioenergy production poses a series of challenges that new technologies are attempting to solve. An improved decomposition of recalcitrant lignocellulose together with an increase in biogas production yield are the main objectives of these new approaches, which also seek the added value of being environmentally friendly. Recent research has reported significant progress in this regard, offering promising outcomes on the degradation of lignocellulose and its subsequent transformation into biomethane by specialized anaerobic microorganisms, overcoming the drawbacks inherent to the process and improving the yield of methane production. The future of the agri–food industry seems to be heading towards the implementation of a circular economy through the introduction of strategies based on the optimized use of lignocellulosic residues as a source of clean and sustainable energy.
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Sawatdeenarunat, Chayanon, K. C. Surendra, Devin Takara, Hans Oechsner, and Samir Kumar Khanal. "Anaerobic digestion of lignocellulosic biomass: Challenges and opportunities." Bioresource Technology 178 (February 2015): 178–86. http://dx.doi.org/10.1016/j.biortech.2014.09.103.

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Piccitto, Alessandra, Danilo Scordia, Sebastiano Andrea Corinzia, Salvatore Luciano Cosentino, and Giorgio Testa. "Advanced Biomethane Production from Biologically Pretreated Giant Reed under Different Harvest Times." Agronomy 12, no. 3 (March 16, 2022): 712. http://dx.doi.org/10.3390/agronomy12030712.

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Анотація:
Increasing energy demands and fossil fuel consumption causing global warming has motivated research to find alternative energy sources such as biofuels. Giant reed (Arundo donax L.), a lignocellulosic, perennial, rhizomatous grass has been proposed as an important bioenergy crop for advanced biofuel in the Mediterranean area. Anaerobic digestion for advanced biomethane seems to be a promising approach. However, the presence of lignin in lignocellulosic biomass represents the main obstacle to its production (due to its recalcitrance). Thus, to use effectively lignocellulosic biomass in anaerobic digestion, one or more pretreatment steps are needed to aid microorganisms access to the plant cell wall. To this end, the present study investigated the effect of fungal pretreatment of giant reeds obtained from two different harvesting time (autumn and winter) on biomethane production by anaerobic digestion using two white rot fungi (Pleurotus ostreatus and Irpex lactus, respectively). The highest biomass lignin degradation after 30 days incubation with P. ostreatus in both autumn (27.1%) and winter (31.5%) harvest time. P. ostreatus pretreatment showed promising results for anaerobic digestion of giant reed achieving a cumulative yield of 130.9 NmL g−1 VS for the winter harvest, whereas I. lacteus showed a decrease in methane yield as compared with the untreated biomass (77.4 NmL g−1 VS and 73.3 NmL g−1 VS for winter and autumn harvest, respectively). I. lacteus pretreatment resulted in a loss of both holocellulose and lignin, indicating that this strain was less selective than P. ostreatus. Further studies are necessary to identify white rot fungi more suitable to lignocellulosic biomass and optimize biological pretreatment conditions to reduce its duration.
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Takizawa, Shuhei, Yasunori Baba, Chika Tada, Yasuhiro Fukuda, and Yutaka Nakai. "Sodium dodecyl sulfate improves the treatment of waste paper with rumen fluid at lower concentration but decreases at higher condition." Journal of Material Cycles and Waste Management 22, no. 3 (January 6, 2020): 656–63. http://dx.doi.org/10.1007/s10163-019-00957-8.

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AbstractRumen fluid has been applied to lignocellulosic biomass digest for methane production, and various feed supplements have been shown to improve ruminant digestion of lignocellulosic biomass. Therefore, we investigated the effects of sodium dodecyl sulfate (SDS) on the pretreatment of lignocellulosic biomass with rumen fluid and subsequent methane fermentation. SDS was mixed with rumen fluid at concentrations of 0.1, 0.2, 0.4, and 0.8 g/L. After SDS addition, the waste paper was pretreated with rumen fluid at 37 °C for 6 h. SDS addition decreased the number of surviving rumen ciliates after pretreatment. SDS addition increased the dissolved chemical oxygen demand during pretreatment; however, SDS addition did not increase the volatile fatty acid concentration. After pretreatment, batch methane fermentation of pretreated waste paper was performed at 35 °C for 45 days. SDS addition at 0.1 and 0.2 g/L shortened the waste paper digestion time and enhanced methane gas production compared to the control. By contrast, SDS addition at 0.4 and 0.8 g/L remarkably inhibited methane production from waste paper. These findings suggest that low concentrations of SDS can improve the efficiency of lignocellulosic biomass pretreatment with rumen fluid, and can enhance methane production from waste paper.
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Більше джерел

Дисертації з теми "Digestion of lignocellulosic biomass"

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Liew, Lo Niee. "Solid-state Anaerobic Digestion of Lignocellulosic Biomass for Biogas Production." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1306870552.

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Lin, Long. "Technical, Microbial, and Economic Study on Thermophilic Solid-state Anaerobic Digestion of Lignocellulosic Biomass." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1500505570855855.

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Brown, Dan Lee. "Comparison of Solid-State to Liquid Phase Anaerobic Digestion of Lignocellulosic Biomass for Biogas Production." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1341870854.

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Xu, Fuqing. "Experimental Studies and Modeling of Solid-State Anaerobic Digestion for Enhanced Methane Production from Lignocellulosic Biomass." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1406143408.

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Kumi, Philemon James. "Improving the bioconversion of lignocellulosic feedstock to bio-fuels and chemicals." Thesis, University of South Wales, 2015. https://pure.southwales.ac.uk/en/studentthesis/improving-the-bioconversion-of-lignocellulosic-feedstock-to-biofuels-and-chemicals(7088d092-fb93-4d70-ba3d-1abb233e33e3).html.

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This study investigated the fate of lignocellulosic biomass (wheat-feed and perennial rye grass) in different anaerobic digestion systems, evaluating the role of substrate specificity on the pattern of degradation. The two-stage (biohydrogen-biomethane) anaerobic system was found to be more effective in the degradation of lignocellulose, when compared to the conventional single-stage system. The perennial rye grass substrate possessed about 21% higher holocellulose concentration when compared to the wheat-feed; its exploitation in the acidogenic digestion was however poor, resulting in a 2.9% lower biogas yield in a equivalent two-stage system. The study therefore developed a treatment technique involving the use of cellulase and ferulic acid esterase enzyme combinations for the treatment of perennial rye grass. The enzyme cocktail at 0.202 ml enzyme/g VS added resulted in efficient bioconversion of the complex polymers to soluble carbohydrates, evident in the yield increase of soluble COD, to 321.0±10.9 mg/gVS, a 393.2% yield increase, when compared to the no enzyme added control. The yield of bio-hydrogen after enzymatic addition was 48ml/gVS, 335% higher when compared to the alkaline treatment; and more than seven fold higher than the yield obtained from the fermentation with no pre-treatment. The acetate to butyrate ratio varied from 4:1, when no pre-treatment was used, to 2:1when alkaline pre-treatment was used, then to 1:1 after the enzymatic treatment. The downstream effect of the prior hydrolysis on the subsequent processes to acidogenic fermentation like biomethane and PHA production and lignin recovery were also investigated. The hydrogenic/acidogenic fermentation resulted in methane yield improvement of 45.7%. The study shows that the more effective a hydrolysis procedure is in the depolymerisation of complex polymers, the greater the accumulation of PHA in the PHA biosynthesis operations. The enhanced hydrogenic /acidogenic fermentation having effectively degraded the holocellulose component of the perennial rye grass substrate ensured that relatively high quality lignin was obtained in an Organosolv lignin-extraction procedure. FT-IR profile show less contamination of polysaccharides and proteins in the lignin extracted from the enzymatically enhanced acidogenic fermentation. An evaluation of the economic viability of the investigated secondary processes showed that direct integrations of those processes to the biohydrogen process may not be as economically advantageous, when compared to a 2nd -stage biomethanation system.
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Mancini, Gabriele. "Different approaches to enhance the biogas production from the anaerobic digestion of lignocellulosic materials." Thesis, Paris Est, 2017. http://www.theses.fr/2017PESC1250/document.

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Анотація:
La production de biogaz par digestion anaérobie (DA) est une technologie renouvelable de longue date et un bioprocessus en croissance continue. Les matériaux lignocellulosiques (ML) présentent plusieurs caractéristiques qui les rendent particulièrement attrayants parmi les substrats couramment employés dans les bioréacteurs anaérobies. En particulier, les ML sous la forme de résidus agricoles ont été reconnus comme la matière première la plus appropriée pour la production de biométhane en raison de leur haute disponibilité, de leur faible coût, de leur durabilité et de leur absence de concurrence directe avec la production alimentaire. Cependant, leur récurrence à la conversion biologique entrave leur application pour la production à grande échelle de biogaz et nécessite une étape de prétraitement pour améliorer la dégradabilité microbienne. En plus des défis posés par la structure lignocellulosique, la fourniture de oligo-éléments (OE) a souvent été jugée insuffisante dans les digesteurs de biogaz. La croissance microbienne dépend de la disponibilité et de la quantité optimale de plusieurs OE spécifiques, constituants essentiels des cofacteurs dans les systèmes enzymatiques impliqués dans la biochimie de la formation de méthane. Différents prétraitements chimiques, à savoir le N-méthylmorpholine-N-oxyde (NMMO), le procédé organosolv et un prétraitement alcalin à l'aide de NaOH ont été étudiés pendant plusieurs expériences en lots pour améliorer les rendements de production de biogaz différents peau, coquille de fève de cacao et paille de blé). Les changements dans la cristallinité de la cellulose, la valeur de rétention d'eau et la composition chimique ont été évalués pour mieux évaluer l'effet des différents prétraitements étudiés sur la structure lignocellulosique. En outre, l'addition de différentes doses de Fe, Co, Ni et Se sur la DA de paille de riz a été étudiée, évaluant l'influence de l'origine de l'inoculum, ainsi que la performance et l'effet synergique de la combinaison d'un prétraitement alcalin avec addition de trace éléments avant la DA de paille de riz. La biodisponibilité des OE lors des tests de potentiel de biométhane par lots a également été évaluée en appliquant une technique d'extraction séquentielle. Les trois prétraitements étudiés étaient des méthodes efficaces pour améliorer la production de biométhane à partir des LM utilisées. Le rendement en biométhane de la DA de paille de riz a augmenté de 82 et 41% respectivement après le NMMO et le prétraitement organosolv. Comparé à la même expérience, le prétraitement NMMO, organosolv et NaOH a permis d'améliorer la DA de la paille de blé, ce qui affecte différemment la composition chimique de la LM brute. Le rendement cumulatif de production de biométhane de 274 mL de CH4/g VS obtenu avec la paille de blé non traitée a été augmenté de 11% par le prétraitement du NMMO et de 15% par le prétraitement organosolv et alcalin. Les coquilles de noisettes et de fèves de cacao, qui n'avaient jamais été étudiées auparavant comme substrats AD, présentaient un bon potentiel de production de biogaz, avec des rendements cumulatifs de biométhane respectivement de 223-261 et 199-231 mL CH4/g VS pour les charges non traitées. Cependant, les prétraitements à la fois de NMMO et d'organosolv n'ont pas conduit à une amélioration significative des rendements de production de biométhane de ces deux LM. La supplémentation des OE n'a eu qu'un effet mineur par rapport aux méthodes de prétraitement. L'ajout de Fe, Co, Ni et Se n'a pas entraîné d'amélioration significative de la DA de paille de riz, alors que l'utilisation du prétraitement de NaOH au cours de la même expérimentation a provoqué une augmentation considérable de la DA, augmentant la production de biogaz de 21%. L'effet négligeable observé après la supplémentation des OE sur la paille de riz pourrait être lié à sa structure lignocellulosique complexe qui nécessite une amélioration de l'hydrolyse qui est l'étape limitante
Biogas production via anaerobic digestion (AD) is a long-standing renewable technology and a continuously growing bioprocess worldwide. Lignocellulosic materials (LMs) present several features that make them especially attractive among the organic substrates commonly employed in anaerobic bioreactors. In particular, LMs under the form of agricultural residues have been acknowledged as the most suitable feedstock for biomethane production due to their high availability, low cost, sustainability and no direct competition with food and feed production. However, their recalcitrance to biological conversion hinders their application for full-scale production of biogas and requires a pretreatment step to improve the LM microbial degradability. In addition to the challenges posed by the lignocellulosic structure, the supply of trace elements (TEs) has often been found insufficient within biogas digesters. The microbial growth depends on the availability and optimal amount of several specific TEs, which are essential constituents of cofactors in enzyme systems involved in the biochemistry of methane formation. Different chemical pretreatments, namely the solvent N-methylmorpholine-N-oxide (NMMO), the organosolv process, and an alkaline pretreatment using NaOH, were investigated during several batch experiments to enhance the biogas production yields from different LMs (i.e. rice straw, hazelnut skin, cocoa bean shell and wheat straw). Changes in the cellulose crystallinity, water retention value and chemical composition were assessed to better evaluate the effect of the different pretreatments studied on the lignocellulosic structure. Furthermore, the addition of different doses of Fe, Co, Ni and Se on the AD of rice straw was studied, evaluating the influence of the inoculum origin, as well as the performance and synergistic effect of combining an alkaline pretreatment with the addition of trace elements prior to the AD of rice straw. The bioavailability of TEs during batch biomethane potential tests was also evaluated applying a sequential extraction technique. The three pretreatments investigated were effective methods for enhancing the biomethane production from the employed LMs. The biomethane yield from the AD of rice straw increased by 82 and 41% after the NMMO and organosolv pretreatment, respectively. When compared within the same experiment, the NMMO, organosolv and NaOH pretreatment were able to improve the AD of wheat straw, differently affecting the chemical composition of the raw LM. The cumulative biomethane production yield of 274 mL CH4/g VS obtained with the untreated wheat straw was enhanced by 11% by the NMMO pretreatment and by 15% by both the organosolv and alkaline pretreatment. Hazelnut skin and cocoa bean shell, which were never investigated before as AD substrates, showed a good potential for biogas production, with cumulative biomethane yields of 223-261 and 199-231 mL CH4/g VS, respectively, for the untreated feedstocks. However, both NMMO and organosolv pretreatments did not lead to a significant enhancement of the biomethane production yields from these two LMs. The TE supplementation had only a minor effect compared to the pretreatment methods. The addition of Fe, Co, Ni and Se did not result in a significant improvement of the AD of rice straw, whereas the use of the NaOH pretreatment, during the same batch experiment, caused a considerable enhancement of the AD, increasing the biogas production yield by 21%. The negligible effect observed after TE supplementation on the AD of rice straw could be linked to its complex lignocellulosic structure, which requires an enhancement of the hydrolysis, which, rather than the methanogenesis, is the rate-limiting step
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Thomas, Hélène. "Etude de l'impact des pré-traitements alcalins sur la digestion anaérobie du sorgho et du miscanthus." Electronic Thesis or Diss., Montpellier, SupAgro, 2019. http://www.theses.fr/2019NSAM0011.

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Анотація:
Dans le contexte du réchauffement climatique et de la diminution des réserves de combustibles fossiles, la biomasse lignocellulosique peut fournir une source renouvelable d'énergie, de matériaux et de produits chimiques. En particulier, la production de biogaz par méthanisation est en plein essor. C’est dans ce contexte de bioraffinerie environnementale que se situe ce projet de thèse. Il porte sur deux biomasses lignocellulosiques différentes : le sorgho et le miscanthus ayant l'avantage de combiner un fort potentiel de production de biomasse avec un impact minimal sur l'environnement. Pour ce type de biomasse, il est bien connu que la lignine joue un rôle de barrière à l’accessibilité des composés. Cette thèse a pour objectif de d’étudier l’impact des pré-traitements alcalins, connus pour délignifier la biomasse de manière efficace et ainsi améliorer son bioaccessibilité et donc sa dégradation par digestion anaérobie. L’étude de l’impact de ces pré-traitements sur la composition biochimique des biomasses et leur production méthane a montré que ces impacts diffèrent en fonction de la biomasse et des conditions opératoires des pré-traitements appliqués (réactif, durée, température, teneur en eau). Dans un objectif d’application de co-digestion en méthanisation agricole, l’impact de certains des prétraitements de ces deux biomasses a été étudié lors d’essais en réacteurs batch à recirculation. Le sorgho s’est révélé être un co-substrat adéquat du fumier. Enfin, l’étude originale des mécanismes d’action de ces pré-traitements à l’échelle de la structure anatomique de la biomasse a montré que les pré-traitements agissent différemment suivant la localisation et le type de lignine. Ces travaux de thèse permettent donc une meilleure compréhension de l’impact des pré-traitements sur différentes biomasses lignocellulosiques
In the context of global warming and declining fossil fuel reserves, lignocellulosic biomass can provide a renewable source of energy, materials and chemicals. In particular, biogas production by anaerobic digestion is facing a fast development. This thesis project takes place in this biorefinery concept. Two different lignocellulosic biomasses, which present the advantage of combining high biomass production potential with minimal environmental impact, were studied. For this kind of biomass, it is well known that lignin acts as a barrier to the accessibility of compounds. The objective of this thesis was to study the impact of alkaline pre-treatments, known be efficient in biomass delignification and thus improve its bioaccessibility and its degradation by anaerobic digestion. The study of the impact of these pre-treatments on the biochemical composition of biomasses and their methane production showed that these impacts were different according the biomass and the operating conditions of the applied pre-treatments (reagent, duration, temperature, water content). With the aim of applying it in agricultural anaerobic co-digestion context, the impact of some of these pre-treatments of sorghum and miscanthus was studied in leach bed reactors. Sorghum was found to be an adequate co-substrate for manure. Finally, the original study of the mechanisms of action of these pre-treatments at the biomass anatomical structure scale showed that the pre-treatments act differently depending on the location and type of lignin. This thesis work therefore allows a better understanding of the impact of pre-treatments on different lignocellulosic biomasses
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Silva, Vanessa Cristina da. "Obtenção anaeróbia de etanol em reator em batelada a partir de glicose, xilose e celulose em condição termófila." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/18/18138/tde-14082015-142835/.

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A biomassa lignocelulósica é uma alternativa atrativa para o aumento na oferta de biocombustíveis, uma vez que é constituída de celulose e hemicelulose. Esses polímeros são constituídos principalmente de unidades menores de glicose e xilose, os quais por meio de bactérias anaeróbias termófilas, podem ser metabolizados em etanol. Portanto, estabeleceu-se o objetivo desse trabalho, em utilizar as principais fontes de carbono da biomassa lignocelulósica (celulose, glicose e xilose), e produzir etanol por meio da ação de consórcio microbiano selecionado a partir de inóculo termófilo e anaeróbio. O inóculo foi submetido a condição de crescimento com variação de pH (2,3,4,5,6,e 7) e variação de dois meios de cultivo em reatores em batelada, visando favorecer bactérias celulolíticas e fermentativas produtoras de etanol. Para a produção de etanol, o pH e meio de cultivo mais adequados foram 7,0 e Meio Thermoanaerobacter ethanolicus, respectivamente. A partir do inóculo enriquecido nas condições nutricionais de pH e meio de cultivo, prosseguiu-se a realização dos ensaios de produção de etanol a partir de celulose, glicose e xilose (1g/L de cada substrato), em pH 7 e meio T. ethanolicus. Os ensaios foram realizados em reator em batelada, em triplicata, a 55 ºC, ambos seguidos de um reator controle, sem adição desses substratos orgânicos. Os rendimentos de etanol foram de 1,73 mol etanol/mol glicose e 1,33 mol de etanol /mol de xilose. Para o substrato celulose obteve-se 1,88 mmol de etanol/g de celulose. Para os reatores controle de glicose, celulose e xilose, no qual o extrato de levedura foi a única fonte orgânica adicionada, a produção de etanol foi 1,27 mmol/L, 0,39 mmol/L e 1,65 mmol/L, respectivamente. Em todos os reatores foi detectado produção de ácido acético, ácido butírico e ácido propiônico. A produção de ácido acético foi de 5,73 mmol/L, 9,73 mmol/L e 14,45 mmol/L, para os reatores de glicose, celulose e xilose, respectivamente. No reator com glicose, observou-se baixo rendimento de hidrogênio (0,31 mol hidrogênio/mol glicose), e nos demais reatores não foi constatado produção desse gás. Em contrapartida, observou-se rendimentos de 6,6 mmol de metano/g de celulose e 0,68 mol de metano/mol de xilose para os respectivos reatores. Dessa forma, pode-se mencionar que em função das características do consórcio microbiano foi possível obter a degradação da celulose e metabolização da glicose e xilose em etanol.
Lignocellulosic biomass is an attractive alternative to increase biofuels proposal, as its composed of cellulose and hemicellulose. These polymers are consisted in individual molecules of glucose and xylose, through some thermophilic bacteria, can metabolize these carbohydrates in ethanol. Therefore, this study reports on using the principals carbon sources of lignocellulosic biomass (cellulose, glucose, and xylose), and producing ethanol through microbial consortium from anaerobic and thermophilic inoculum. The biomass was submitted to variation of pH (2,3,4,5,6, and 7) and two kinds of medium, due to ethanol production in batch reactors. For ethanol production, the optimized pH and medium were 7,0 and Thermoanaerobacter ethanolicus medium, respectively. The enriched culture was being cultivated in pH and medium experiments were used to ethanol production experiments that carried out in batch reactors, from cellulose, glucose and xylose were realized in triplicate and were maintained at 55 °C, in both batches had a control reactor (without these organics substrates). Positive results in ethanol yields were 1,73 mol ethanol/ mol glucose and 1,33 mol ethanol/ mol xylose. In celluloses reactors the microbial consortium was efficient in substrate degradation, however, was obtained lower ethanol yields (1,88 mol ethanol/ g cellulose). In control reactors from glucose, cellulose and xylose, that yeast extract was the unique organic source, ethanol production was 1,27 mmol/L, 0,39 mmol/L e 1,65 mmol/L, respectively. In all reactors were detected acetic, butyric and propionic acids. The acetic acid production was 5,73 mmol/L, 9,73 mmol/L e 14,45 mmol/L in glucose, cellulose and xylose reactors, respectively. For glucoses reactors were observed lower hydrogen production (0,31 mol hydrogen/ mol glucose), in the other reactors did not observed gases production. Instead of the following yields were obtained: 6,6 mmol methane/ g cellulose and 0,68 mol methane/ mol xylose. Taking this into account, microbial consortium enriched had characteristics to degrade cellulose and metabolize glucose and xylose to ethanol.
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Pinilla, Maria Juliana. "Comparative Life Cycle Assessments of Lignocellulosic and Algae Biomass Conversion to Various Energy Products through Different Pathways." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3740.

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Bioenergy has the potential to reduce the world's dependence on fossil fuels, and to decrease the CO2 emissions due to fossil combustion. Lignocellulosic and algae biomass have been presented as promising feedstocks for bioenergy production. In this study, a comparative Life Cycle Assessment (LCA) has been developed to evaluate the environmental impacts associated with different energy products via different routes across the whole life of algal and lignocellulosic bioenergy. Results were compared per energy basis, the production of 1 million BTU of energy products. For the development of the comparative algae biomass conversion LCA, algal biomass was converted to liquid biofuels via a thermochemical gasification and Fisher-Tropsch Synthesis (FTS) process; and to electricity and heat via anaerobic digestion and combined heat and power (CHP) process. Overall results from the algae biomass conversion LCA showed that the process that converts algae biomass through anaerobic digestion and CHP process to electricity and heat had the highest overall environmental impact. Results also showed that the impact categories that appear to contribute the most to the overall impacts are ecotoxicity, human health non-cancer, and human health cancer. For the development of the comparative lignocellulosic biomass conversion LCA, lignocellulosic biomass was converted to ethanol and higher alcohols through thermochemical gasification and alcohol synthesis process, to liquid biofuels via thermochemical gasification and FTS process, and to liquid biofuels via a thermochemical gasification and FTS process that uses methane. Overall results from the lignocellulosic biomass conversion LCA showed that the process that converts lignocellulosic biomass into alcohols has the highest overall environmental impact. Results also showed that the impact categories that appear to contribute the most to the overall impacts are ecotoxicity, human health non-cancer, human health cancer, and global warming. This study determined that cultivated algae biomass feedstock has much higher environmental impacts compared with lignocellulosic biomass feedstock from forestation and agriculture byproducts. It was also concluded that thermochemical gasification and FTS process showed higher efficiency when converting biomass to bioenergy. In addition, the five biomass to bioenergy conversion pathways used in the development of this LCA study were compared. Results showed that the pathway with lignocellulosic biomass (feedstock), thermochemical gasification and alcohol synthesis process (conversion process), and ethanol and higher alcohols (energy products) has the largest environmental impact.
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Puthumana, Amal Babu. "Effect of feed ratio and pre-treatment on methane yields during anaerobic co-digestion of sugarcane bagasse and trash with chicken manure." Thesis, Griffith University, 2020. http://hdl.handle.net/10072/393971.

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Australia is one of the major producers and exporter of agricultural products. Annually, Australian agriculture produces approximately 151 Tg CO2 equivalent emissions. The use of fossil fuels in crop cultivation, harvesting and transportation are considered as the primary source of these greenhouse gas (GHG) emissions. Moreover, agronomic management and crop residues left in the field also contribute to these GHG emissions. Alternative waste management practices include the use of crop residues and agro-wastes as feedstocks for bioenergy production. Anaerobic digestion is considered as sustainable environmental technology to convert industrial sugarcane residues to carbon dioxide (CO2) - neutral biogas. The biogas thus produced can be used to produce heat, electricity and upgrade to biomethane for vehicle use. The produced biomethane can replace the diesel consumption associated with GHG emission in cane transport. Sugarcane is one among the most cultivated crop in the world. Australia alone produced nearly 33.5 million tonnes of cane in 2018 (FAO 2018). These large production of sugarcane lead to an increase in crop residues and agro-wastes from the sugarcane industry. In this study, an investigation regarding the anaerobic co-digestion of crop residues and agro-wastes from sugarcane industry viz, sugarcane trash (SCT) or sugarcane bagasse (SCB) with chicken manure (CM) was investigated in a batch experiment at 37 °C. In spite of various researches conducted till date about co-digestion of lignocellulosic waste with manure, no research data was available regarding the effect of feed ratio on co-digestion of SCT/SCB with CM. This research gap was investigated in this study. In addition to this, steam explosion pre-treatment of SCT/SCB was included to investigate how the pre-treatment influence methane yield among different feed ratios of SCT/SCB with CM. At first, SCT and SCB were subjected to steam explosion pre-treatment (steam impregnation at 130 °C for 5 minutes followed by steam explosion). Later, two sets of biochemical methane potential (BMP) tests were conducted at an Inoculum to Substrate Ratio (ISR) of 2. Co-digestion of untreated and steam exploded SCT or SCB with CM was investigated at feed ratios of 75:25, 50:50 and 25:75 on volatile solids (VS) basis. Assays with 100% untreated and steam exploded SCT or SCB were also included. Chemical analysis revealed that the steam explosion improved the VS content in pre-treated biomass compared with untreated biomass. The increase in VS was 1.6% and 5.7% in SCT and SCB, respectively. On the other hand, a slight reduction in total solids (TS) of nearly 4% and 1% were observed in the case of SCT and SCB, respectively. BMP results showed that the steam explosion had a profound effect on the methane production rates and yields, especially for SCB than SCT. Methane (CH4) yields of 201.8 and 199 ml CH4/gVSadded were obtained during the mono-digestion of untreated SCT and SCB, respectively. The corresponding values for 100% steam-exploded SCT and SCB were 207.5 and 225.6 ml/gVSadded, respectively. In comparison to mono-digestion, the co-digestion of SCB or SCT with CM did not improve the methane yields. Nevertheless, pre-treatment improved the methane production rates and yields of pre-treated biomass than untreated biomass. Among the studied feed ratios, best methane yields of 206.5 ml/gVSadded were obtained when steam-exploded SCT was co-digested with CM at 75:25 ratio. However, methane yields decreased with an increase in the amount of CM added. SCB also showed a similar trend. The best methane yield of 199.5 ml/gVSadded was obtained when steam-exploded SCB was co-digested with CM at 75:25 ratio. Among the tested feed ratios, all co-digestion mixtures except for 75:25 and 50:50 ratios of untreated SCT to CM showed synergistic effects. The best synergistic effect of 18.57% was observed when untreated SCB was co-digested with CM at 25:75 ratio. Kinetic modelling results confirmed that the steam explosion pre-treatment improved the methane production rates and yields by increasing the hydrolysis rate constant values. However, a higher hydrolysis rate constant was noticed for SCT than SCB. The highest hydrolysis rate constant of 0.16 d-1 was achieved at feed ratios of 50:50 and 25:75 of pre-treated SCT:CM. Interestingly, more than 75% of methane in pre-treated assays was produced by Day 11. The study thus suggests that the steam explosion can improve the methane production rates, yields and productivity of SCT and SCB. However, the use of CM as co-substrate did not improve the methane yields when compared to the mono-digestion of SCT or SCB, but a positive synergism was evident in most of the co-digestion feed ratios.
Thesis (Masters)
Master of Philosophy (MPhil)
School of Eng & Built Env
Science, Environment, Engineering and Technology
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Книги з теми "Digestion of lignocellulosic biomass"

1

Boot, Michael, ed. Biofuels from Lignocellulosic Biomass. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2016. http://dx.doi.org/10.1002/9783527685318.

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2

Kubicek, Christian P. Fungi and Lignocellulosic Biomass. Oxford, UK: Wiley-Blackwell, 2012. http://dx.doi.org/10.1002/9781118414514.

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3

Kubicek, C. P. Fungi and lignocellulosic biomass. Ames, Iowa: Wiley-Blackwell, 2012.

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Fungi and lignocellulosic biomass. Ames, Iowa: Wiley-Blackwell, 2012.

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5

P, Chynoweth David, and Isaacson Ron, eds. Anaerobic digestion of biomass. London: Elsevier Applied Science, 1987.

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6

Sharma, Vinay. Lignocellulosic Biomass Production and Industrial Applications. Edited by Arindam Kuila. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2017. http://dx.doi.org/10.1002/9781119323686.

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Bajpai, Pratima. Pretreatment of Lignocellulosic Biomass for Biofuel Production. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0687-6.

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Bajpai, Pratima. Single Cell Protein Production from Lignocellulosic Biomass. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-5873-8.

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Bioalcohol production: Biochemical conversion of lignocellulosic biomass. Boca Raton: CRC Press, 2010.

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Bioalcohol production: Biochemical conversion of lignocellulosic biomass. Boca Raton: CRC Press, 2010.

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Частини книг з теми "Digestion of lignocellulosic biomass"

1

Taherzadeh, Mohammad J., and Azam Jeihanipour. "Recalcitrance of Lignocellulosic Biomass to Anaerobic Digestion." In Biogas Production, 27–54. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118404089.ch2.

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Mukherjee, Alivia, Biswa R. Patra, Falguni Pattnaik, Jude A. Okolie, Nanda Sonil, and Ajay K. Dalai. "Biomethane Production through Anaerobic Digestion of Lignocellulosic Biomass and Organic Wastes." In Biomethane, 61–92. Boca Raton: Apple Academic Press, 2022. http://dx.doi.org/10.1201/9781003277163-4.

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Ferraro, Alberto, Giulia Massini, Valentina Mazzurco Miritana, Antonella Signorini, Marco Race, and Massimiliano Fabbricino. "A Simplified Model to Simulate a Bioaugmented Anaerobic Digestion of Lignocellulosic Biomass." In Frontiers in Water-Energy-Nexus—Nature-Based Solutions, Advanced Technologies and Best Practices for Environmental Sustainability, 367–70. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13068-8_92.

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Gunjo, Dawit Gudeta, Pinakeswar Mahanta, and P. S. Robi. "Designing and Utilizing of the Solar Water Heater for Digestion of Lignocellulosic Biomass." In Advances in Waste Management, 91–105. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0215-2_7.

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Hamraoui, K., J. A. Siles, A. F. Chica, M. Ángeles Martín Santos, and H. El Bari. "Hydrogen Peroxide Pretreatment of Lignocellulosic Biomass (Pepper Plant and Eggplant) for Anaerobic Digestion." In Proceedings of the 1st International Conference on Water Energy Food and Sustainability (ICoWEFS 2021), 318–24. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75315-3_36.

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Rödl, Anne. "Lignocellulosic Biomass." In Biokerosene, 189–220. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-53065-8_9.

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Ghislain, Thierry, Xavier Duret, Papa Niokhor Diouf, and Jean-Michel Lavoie. "Lignocellulosic Biomass." In Handbook on Characterization of Biomass, Biowaste and Related By-products, 499–535. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-35020-8_3.

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Yu, Fei, and Jonathan Y. Chen. "Lignocellulosic Biomass Processing." In Food and Industrial Bioproducts and Bioprocessing, 293–311. Oxford, UK: Wiley-Blackwell, 2012. http://dx.doi.org/10.1002/9781119946083.ch12.

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Takara, Devin, Prachand Shrestha, and Samir Kumar Khanal. "Lignocellulosic Biomass Pretreatment." In Bioenergy and Biofuel from Biowastes and Biomass, 172–200. Reston, VA: American Society of Civil Engineers, 2010. http://dx.doi.org/10.1061/9780784410899.ch09.

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Melville, Lynsey, Andreas Weger, Sonja Wiesgickl, and Matthias Franke. "Anaerobic Digestion." In Transformation of Biomass, 31–59. Chichester, UK: John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118693643.ch2.

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Тези доповідей конференцій з теми "Digestion of lignocellulosic biomass"

1

Wickramaarachchi, A. L., P. G. Rathnasiri, M. Narayana, M. Torrijos, and R. Escudie. "Kinetic Modeling of Dry Anaerobic Co-Digestion of Lignocellulosic Biomass." In 2019 Moratuwa Engineering Research Conference (MERCon). IEEE, 2019. http://dx.doi.org/10.1109/mercon.2019.8818752.

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2

Bohn, Dieter, and Joachim Lepers. "Effects of Biogas Combustion on the Operation Characteristics and Pollutant Emissions of a Micro Gas Turbine." In ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/gt2003-38767.

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The capability of gas turbines to burn low-BTU biogenic fuels besides natural gas becomes an increasingly important feature for small sized plants. This is particularly the case for micro gas turbines targeting decentralized applications. The energy conversion of biomass to electricity can be improved by integration of a micro gas turbine with the biogas generation process. Such an integrated plant concept is presented in this paper after a general overview of low-BTU fuels suitable for utilization in gas turbines has been given. The advantages are a more efficient biomass conversion and an extension of biomass digestion to biomass with reduced biochemical availability such as mildly lignocellulosic biomass. The effects of biogas utilization on the characteristics of operation of a representatively modeled microturbine are investigated in this paper. Particularly, contributions to the efficiency decrease occuring when biogas is burnt instead of natural gas are analyzed. Further, an overview of the effects of low-BTU fuels on gas turbine materials and pollutant emissions is given. The change of emissions of nitrogen oxide and carbon monoxide is analyzed with a combustion model based on a systematically reduced 6-step reaction mechanism. This study was conducted for an advanced combustor design applying ceramic materials and a transpiration cooling technology.
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Dubrovskis, Vilis, and Dagnis Dubrovskis. "Methane production from briquettes of birch sawdust." In 22nd International Scientific Conference Engineering for Rural Development. Latvia University of Life Sciences and Technologies, Faculty of Engineering, 2023. http://dx.doi.org/10.22616/erdev.2023.22.tf124.

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Renewable energy sources have the potential to reduce emissions of GHG when compared to the combustion of fossil fuels and thereby to mitigate climate change. Bioenergy systems can contribute to climate change mitigation if they replace traditional fossil fuel use (IPCC, 2012). Latvia is also striving to achieve neutral emissions by 2030. Therefore, the use of renewable energy is supported. Wood waste maybe an important resource for biogas production. The biodegradability is however limited because of the recalcitrant nature of the biofibers (lignocellulosic biomass) it contains. More and more biogas plants used the pellets or briquettes from various residues as a raw material. Their advantage is not only cheaper transport over longer distances, but also they absorb moisture well and do not form a floating layer. Hydraulic retention time working with such raw materials as birch sawdust and briquettes is relatively long and requires large volumes of bioreactors. Variety of additives can be used to improve the anaerobic digestion process. This article shows the results, where the enzymes alpha amylase, xylanase and biocatalyst Metaferm are used for the digestion process of birch briquette improvement. Birch briquettes were digested in 0.75 l bioreactors at temperature 38 °C in a batch mode process. Two biorectors were for control purposes and contained inoculums only. Other 14 biorectors contained biomass substrates without or with added enzymes or biocatalyst. Average specific biogas or methane yield from anaerobic fermentation of birch briquettes was 0.427 L·g-1DOM or 0.178 L·g-1DOM respectively. Addition of enzymes and biocatalyst (1ml) in bioreactors with birch briquettes increases the average methane yield.
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RUSANOWSKA, Paulina, Magda DUDEK, Marcin ZIELIŃSKI, and Marcin DĘBOWSKI. "BIOGAS POTENTIAL OF DIGESTATE AFTER FERMENTATION OF SIDA HERMAPHRODITA SILAGE." In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.194.

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Lignocellulosic biomass is one of the most widely used substrate in methane digestion. Among plants with a high yield potential, Sida hermaphrodita is particularly noteworthy, due to Sida can be grown on low quality soils and its utilization for energy purposes is not competitive with food crops. Methane fermentation of biomass with such a complex structure usually requires application of pre-treatment methods for efficient utilization of its cellulose and hemicellulose. It is economically justified to control of digestate if substrate was efficiently used. The study aimed to measure biogas potential of digestate after fermentation of Sida hermaphrodita silage. The post-fermentation of two samples of digestate from the reactors operated at organic compounds loading 2 kg/(m3∙d) – S1 and 3 kg/(m3∙d) – S2 was performed. Hydraulic retention time in these reactors was 50 d and 33 d, respectively. Biogas potential of fermented sludge was measured with the use of AMPTS II (Bioprocess control). Biogas production was 0.012 L/g TS and 0.031 L/g TS from digestate’s S1 and S2, respectively. The methane content in biogas was 15% from digestate S1 and 50% from digestate S2. The obtained results suggest that digestate from reactor with organic compounds loading of 3 kg/(m3∙d) still has high biogas potential, and hydraulic retention time in this reactor should be prolonged.
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Ugwu, Samson N., and Christopher C. Enweremadu. "Comparative Studies on the Effect of Selected Iron-Based Additives on Anaerobic Digestion of Okra Waste." In ASME 2019 13th International Conference on Energy Sustainability collocated with the ASME 2019 Heat Transfer Summer Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/es2019-3820.

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Abstract Biogas production is an anaerobic waste-to-energy technology, involving waste degradation and stabilization. The sustainable, cheap and clean nature of biogas has led to the unprecedented rise in its use as an alternative energy source. Due to the increased interests, availability of conventional biodegradable organics has shrunk enormously over the years, necessitating the aggressive search for novel energy crops and substrate enhancement options. These novel options ensure feedstock security, optimize conventional biomass feedstocks, improve feedstock degradability and increase in biogas yield. Low biodegradability of most lignocellulosic wastes like okra waste, limits their use as a viable substrate in the anaerobic digestion process. Over the years, several elements, compounds and nanoparticles have been applied to anaerobic digestion systems as supplementary nutrients with a view to enhancing substrate degradation. Such supplements like iron-based additives have gained prominence in anaerobic digestion processes of wastes, owing to their electron donation abilities, promotion of solubilization, hydrolysis, acidification, and hydrogenotrophic methanogenesis. In a bid to enhance substrate degradation, reduce inhibitions, increase both biogas yield and methane content, a comparative study on the influence of four different iron-based additives (nanoscale zero-valent iron (nZVI), Polypyrrole-magnetic nanocomposite (Ppy-Fe3O4), Iron powder (Fe) and Hematite (Fe2O3)) on the entire anaerobic digestion of okra waste was done. Previously determined optimum doses, 20 mg, 20 mg, 750 mg, 750 mg and 0 respectively for nZVI, Ppy-Fe3O4, Fe, Fe2O3 and control were added to the bioreactors containing okra wastes in a 500 mL biomethane potential bioreactors under mesophilic temperature (37°C) for 20 days. The cumulative volumes of the biogas from different reactors were recorded and analyzed. The morphological deformation, structures and analysis of the undigested substrate, digestates of substrate supplemented with iron-based additives and the control were evaluated with scanning electron microscopy (SEM). Artificial neural network (ANN) model and the modified Gompertz model were validated with the experimental data. The ANN model showed better goodness of fit and was better correlated with the experimental data. Experimental data were subjected to analysis of variance at a 95% confidence level. Results showed that Ppy-Fe3O4 additives better enhanced both biogas yield and methane contents significantly when compared to the control. It was also observed that all iron-additive supplemented processes were more degraded when compared with the control.
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Zewei Miao. "Lignocellulosic Biomass Feedstock Supply Logistic Analysis." In 2011 Louisville, Kentucky, August 7 - August 10, 2011. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2011. http://dx.doi.org/10.13031/2013.37203.

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Bai, Xuefeng, and Wei Wu. "Pyrolysis of Lignocellulosic Biomass from Northeast China." In 2010 IEEE Green Technologies Conference (IEEE-Green-2010). IEEE, 2010. http://dx.doi.org/10.1109/green.2010.5453776.

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Weitao Zhang, Minliang Yang, and Kurt A. Rosentrater. "Pretreatment Methods for Lignocellulosic Biomass to Ethanol." In 2013 Kansas City, Missouri, July 21 - July 24, 2013. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2013. http://dx.doi.org/10.13031/aim.20131594712.

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9

Kingsley L. Iroba, Lope G. Tabil, Meda Venkatesh, and Baik Oon-Doo. "Thermal properties of lignocellulosic biomass barley straw." In 2013 Kansas City, Missouri, July 21 - July 24, 2013. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2013. http://dx.doi.org/10.13031/aim.20131594972.

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10

Mei, Danhua, Shiyun Liu, Sen Wang, and Zhi Fang. "Plasma-Enabled Fast Liquefaction of Lignocellulosic Biomass: Impact of Biomass Feedstocks." In 2020 IEEE International Conference on Plasma Science (ICOPS). IEEE, 2020. http://dx.doi.org/10.1109/icops37625.2020.9717951.

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Звіти організацій з теми "Digestion of lignocellulosic biomass"

1

McMillan, J. D. Processes for pretreating lignocellulosic biomass: A review. Office of Scientific and Technical Information (OSTI), November 1992. http://dx.doi.org/10.2172/7171656.

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2

McMillan, J. D. Processes for pretreating lignocellulosic biomass: A review. Office of Scientific and Technical Information (OSTI), November 1992. http://dx.doi.org/10.2172/10104508.

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3

Guffey, F. D., and R. C. Wingerson. FRACTIONATION OF LIGNOCELLULOSIC BIOMASS FOR FUEL-GRADE ETHANOL PRODUCTION. Office of Scientific and Technical Information (OSTI), October 2002. http://dx.doi.org/10.2172/807155.

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4

Binder, Thomas, Michael Erpelding, Josef Schmid, Andrew Chin, Rhea Sammons, and Erin Rockafellow. Conversion of Lignocellulosic Biomass to Ethanol and Butyl Acrylate. Office of Scientific and Technical Information (OSTI), April 2015. http://dx.doi.org/10.2172/1253922.

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5

Jarnigan, Alisha. Enhancing Cellulase Commercial Performance for the Lignocellulosic Biomass Industry. Office of Scientific and Technical Information (OSTI), June 2016. http://dx.doi.org/10.2172/1255837.

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6

Kumar, Manoj. Development of a commercial enzymes system for lignocellulosic biomass saccharification. Office of Scientific and Technical Information (OSTI), December 2012. http://dx.doi.org/10.2172/1068167.

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7

Huber, George W., та Jiayue He. Catalytic Processes for Production of α,ω-diols from Lignocellulosic Biomass. Office of Scientific and Technical Information (OSTI), жовтень 2018. http://dx.doi.org/10.2172/1480118.

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8

Dutta, A., M. Talmadge, J. Hensley, M. Worley, D. Dudgeon, D. Barton, P. Groenendijk, et al. Process Design and Economics for Conversion of Lignocellulosic Biomass to Ethanol. Office of Scientific and Technical Information (OSTI), May 2011. http://dx.doi.org/10.2172/1219435.

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9

Phillips, S., A. Aden, J. Jechura, D. Dayton, and T. Eggeman. Thermochemical Ethanol via Indirect Gasification and Mixed Alcohol Synthesis of Lignocellulosic Biomass. Office of Scientific and Technical Information (OSTI), April 2007. http://dx.doi.org/10.2172/902168.

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10

Phillips, S., A. Aden, J. Jechura, D. Dayton, and T. Eggeman. Thermochemical ethanol via indirect gasification and mixed alcohol synthesis of lignocellulosic biomass. Office of Scientific and Technical Information (OSTI), April 2007. http://dx.doi.org/10.2172/1216397.

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