Bibliographies thématiques / Biomass pre-treatment

Sommaire

Articles de revues
Thèses
Livres
Chapitres de livres
Actes de conférences

Littérature scientifique sur le sujet « Biomass pre-treatment »

Auteur : Grafiati

Publié le 9 mars 2023

Créez une référence correcte selon les styles APA, MLA, Chicago, Harvard et plusieurs autres

Choisissez une source :

Consultez les listes thématiques d’articles de revues, de livres, de thèses, de rapports de conférences et d’autres sources académiques sur le sujet « Biomass pre-treatment ».

À côté de chaque source dans la liste de références il y a un bouton « Ajouter à la bibliographie ». Cliquez sur ce bouton, et nous générerons automatiquement la référence bibliographique pour la source choisie selon votre style de citation préféré : APA, MLA, Harvard, Vancouver, Chicago, etc.

Vous pouvez aussi télécharger le texte intégral de la publication scolaire au format pdf et consulter son résumé en ligne lorsque ces informations sont inclues dans les métadonnées.

Articles de revues sur le sujet "Biomass pre-treatment"

Özbay, Nurgül, et Elif Yaman. « Enhancing the Phenolic Content of Bio-Oil by Acid Pre-Treatment of Biomass ». International Journal of Renewable Energy Development 7, n^o 2 (10 juillet 2018) : 163–69. http://dx.doi.org/10.14710/ijred.7.2.163-169.

Texte intégral

Résumé :

Pyrolysis of lignocellulosic biomass with acidic pre-treatment to produce valuable bio-chemicals has been carried out in an integrated pyrolysis-gas chromatograph/mass spectrometry system. Three different waste biomasses (fir wood sawdust, pine wood sawdust and nutshell) were subjected to acidic solution to specify the acid pre-treatment effect on biomass chemical structure, thermal degradation profile and pyrolysis products. Post acid pre-treatments, the changes in the biomasses and thermal degradation profile were studied through proximate, structure and ultimate analysis and thermogravimetric. The pre-treatment significantly reduced the inorganic, cellulose and hemicellulose content in biomass samples. According to the pyrolysis experiment results, acid pre-treatment provided the increasing of the amount of phenolic in the degradation products at 10 min pyrolysis time. All the results would assist further understanding of thermal decomposition and thermo-chemical application for bio-fuels and bio-chemicals of fir wood sawdust, pine wood sawdust and nutshell.Article History: Received January 15th 2018; Received in revised form May 24th 2018; Accepted 7th June 2018; Available onlineHow to Cite This Article: Ozbay, N. and Yaman, E (2018) Enhancing the Phenolic Content of Bio-Oil by Acid Pre-Treatment of Biomass. Int. Journal of Renewable Energy Development, 7(2), 163-169.https://doi.org/10.14710/ijred.7.2.163-169

Styles APA, Harvard, Vancouver, ISO, etc.

Sulaiman, Shaharin Anwar, Nor Hazwani Mat Razali, Mohamad Nazmi Zaidi Bin Moni et Muddasser Inayat. « Pre-treatment of oil palm fronds biomass for gasification ». MATEC Web of Conferences 131 (2017) : 03016. http://dx.doi.org/10.1051/matecconf/201713103016.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Bhutto, Abdul Waheed, Khadija Qureshi, Khanji Harijan, Rashid Abro, Tauqeer Abbas, Aqeel Ahmed Bazmi, Sadia Karim et Guangren Yu. « Insight into progress in pre-treatment of lignocellulosic biomass ». Energy 122 (mars 2017) : 724–45. http://dx.doi.org/10.1016/j.energy.2017.01.005.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Srivastava, N. K., S. S. Parhi, M. K. Jha et T. R. Sreekrishnan. « Optimization of effect of pre-treatment on Chromium removal by algal biomass using Response Surface Methodology ». International Journal of Engineering Research 3, n^o 3 (1 mars 2014) : 167–71. http://dx.doi.org/10.17950/ijer/v3s3/308.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Stephanidis, S., C. Nitsos, K. Kalogiannis, E. F. Iliopoulou, A. A. Lappas et K. S. Triantafyllidis. « Catalytic upgrading of lignocellulosic biomass pyrolysis vapours : Effect of hydrothermal pre-treatment of biomass ». Catalysis Today 167, n^o 1 (juin 2011) : 37–45. http://dx.doi.org/10.1016/j.cattod.2010.12.049.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Carneiro-Junior, José Airton de Mattos, Eduardo Oliveira Teles, Fabio Matos Fernandes, Carine Tondo Alves, Silvio Alexandre Beisl Vieira de Melo et Ednildo Andrade Torres. « Torrefaction as a Pre-Treatment of Biomass : A Bibliometric Analysis ». International Journal for Innovation Education and Research 9, n^o 1 (1 janvier 2021) : 289–313. http://dx.doi.org/10.31686/ijier.vol9.iss1.2898.

Texte intégral

Résumé :

This article sought to investigate biomass torrefaction, analyzing the collaboration network between authors, institutions and countries in order to systematize the dynamics of scientific research on the subject. The systematic evaluation of the articles obtained in the scope of the research was important to provide an overview of the main stakeholders in the academic and institutional scope. This research is characterized as exploratory-descriptive of quantitative nature, whose technical procedure adopted was bibliometric research. A set of 662 documents were extracted from the main collection of Web of Science. The Vosviewer software was used to create scientific collaboration and co-citation networks. It was noted that the number of documents has been growing steadily since 2011, with a high degree of multidisciplinary collaboration and prolific contributions from American and Chinese researchers on this topic. The USA is the country with the largest number of publications (120 publications), followed by China (70 publications). There was a total of 1,894 authors and 594 institutions researching on biomass torrefaction, with SINTEF Energy Research - Norway having the largest number of publications, followed by National Cheng Kung University - Taiwan and Norwegian University of Science and Technology - Norway. The use of bibliometrics proposed here offers a systematic and dynamic approach to scientific research on biomass torrefaction. The identified groupings and collaboration networks presented a specific outline of the contents already published, authors, countries and institutions, in order to contribute as a starting point to future work in the field of biomass torrefaction.

Styles APA, Harvard, Vancouver, ISO, etc.

Rizal, Nur, Mohamad Ibrahim, Mohd Zakaria, Suraini Abd-Aziz, Phang Yee et Mohd Hassan. « Pre-treatment of Oil Palm Biomass for Fermentable Sugars Production ». Molecules 23, n^o 6 (7 juin 2018) : 1381. http://dx.doi.org/10.3390/molecules23061381.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Rasid, R. Abdul, et M. H. M. Yusoff. « The Potential of CO2 Torrefaction as Biomass Pre- Treatment Method ». Indian Journal of Science and Technology 10, n^o 7 (1 février 2017) : 1–5. http://dx.doi.org/10.17485/ijst/2017/v10i7/111462.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Onumaegbu, C., J. Mooney, A. Alaswad et A. G. Olabi. « Pre-treatment methods for production of biofuel from microalgae biomass ». Renewable and Sustainable Energy Reviews 93 (octobre 2018) : 16–26. http://dx.doi.org/10.1016/j.rser.2018.04.015.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Harun, Razif, W. S. Y. Jason, Tamara Cherrington et Michael K. Danquah. « Exploring alkaline pre-treatment of microalgal biomass for bioethanol production ». Applied Energy 88, n^o 10 (octobre 2011) : 3464–67. http://dx.doi.org/10.1016/j.apenergy.2010.10.048.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Plus de sources

Thèses sur le sujet "Biomass pre-treatment"

Randall, Warren. « Development of a biomass gasification pre-treatment system ». Master's thesis, University of Cape Town, 2013. http://hdl.handle.net/11427/16848.

Texte intégral

Résumé :

This project was focussed on drying and feeding timber-yard waste for a gasifier and the assessment of the feedstock drying on the gasifier performance. This required a thermodynamic model to be developed in order to assess the effect of drying as was highlighted in the literature survey. A heat exchanger model was also developed which formed the basis for the design of the drier. The project aim was to develop a reliable feed process for a lab-scale gasifier that was able to dry the proposed feedstock to below 10%. The plant was to be as far as possible, automated, with minimal maintenance requirements.

Styles APA, Harvard, Vancouver, ISO, etc.

Lopes, André Miguel da Costa. « Pre-treatment of lignocellulosic biomass with ionic liquids ». Master's thesis, Universidade de Aveiro, 2012. http://hdl.handle.net/10773/9521.

Texte intégral

Résumé :

Mestrado em Biotecnologia
O objetivo deste trabalho foi estudar o pré-tratamento de biomassa lignocelulósica, como a palha de trigo, usando líquidos iónicos (LIs) de modo a obter a separação dos principais componentes, nomeadamente, celulose, hemicelulose e lignina. O processo de pré-tratamento foi otimizado com base em duas metodologias descritas na literatura utilizando o líquido iónico acetato de 1-etil-3-metilimidazólio ([emim][CH3COO]). A metodologia otimizada permitiu separar as frações ricas em hidratos de carbono das frações de lignina, ambas com elevada pureza, e com uma recuperação de LIs até um máximo de 97% da sua massa inicial. Desta forma, o LI pode ser reusado confirmando a flexibilidade do processo desenvolvido. A versatilidade do método foi testada com a investigação de três líquidos iónicos diferentes, nomeadamente hidrogenossulfato de 1-butil-3-metilimidazólio ([bmim][HSO4]), tiocianato de 1-butil-3-metilimidazólio ([bmim][SCN]) e dicianamida de 1-butil-3-metilimidazólio ([bmim][N(CN)2]). No processo de dissolução de palha de trigo observou-se uma dissolução completa a nível macroscópico apenas para os líquidos iónicos [emim][CH3COO] e [bmim][HSO4]. O [emim][CH3COO] apresentou maior eficiência no processo de dissolução e regeneração da biomassa. Contrariamente, o [bmim][SCN] demonstrou ser o menos eficiente em todo o processo de pré-tratamento. Um comportamento diferente foi observado para o [bmim][HSO4], cujo pré-tratamento apresentou similaridades a uma hidrólise ácida. Os pré-tratamentos com [bmim][HSO4] e [bmim][N(CN)2] permitiram a obtenção de frações ricas em celulose com um conteúdo em hidratos de carbono de 87 a 90%. Para as frações ricas em celulose provenientes do pré-tratamento com [emim][CH3COO] foram efetuados ensaios de hidrólise enzimática para verificar a potencial aplicação destas frações, bem como, avaliar a eficiência das metodologias de pré-tratamento estudadas. Os resultados obtidos demonstraram elevado índice de digestibilidade da celulose e confirmou o elevado teor de glucose presente na fração celulósica obtida pela metodologia otimizada. A técnica de Espectroscopia de Infravermelho com Transformadas de Fourier (FT-IR) permitiu efetuar análises qualitativas e quantitativas de todas as amostras obtidas nos pré-tratamentos realizados. Para avaliar a pureza dos LIs após os pré-tratamentos utilizou-se a técnica espectroscópica de ressonância magnética nuclear (RMN). Os resultados provenientes dos ensaios de hidrólise enzimática foram obtidos através da técnica cromatográfica de HPLC.
This work is devoted to the pre-treatment of lignocellulosic biomass using ionic liquids (ILs) to separate cellulose, hemicellulose and lignin fractions. Particularly, research was focused on studying the influence of various ILs on the pre-treatment of wheat straw. The pre-treatment procedure was optimised basing on two methodologies presented in the literature. In the optimised method 1-ethyl-3-methylimidazolium acetate ([emim][CH3COO]) IL was used. The developed method is beneficial as allows a separation of highly-purified carbohydrate and lignin-rich samples and permits to recover ILs with a yield of 97wt%. Therefore, the IL could be reused confirming a great flexibility of the developed method. Furthermore, versatility of the method was confirmed by examination of different ILs such as 1-butyl-3-methylimidazolium hydrogensulfate ([bmim][HSO4]), 1-butyl-3-methylimidazolium thiocyanate ([bmim][SCN]) and 1-butyl-3-methylimidazolium dicyanamide ([bmim][N(CN)2]). Only [emim][CH3COO] and [bmim][HSO4] ILs were found to be capable to achieve a macroscopic complete dissolution of wheat straw. Considering dissolution and regeneration process, [emim][CH3COO] was the most efficient among investigated ILs. On the contrary, [bmim][SCN] demonstrated the lowest efficiency either in dissolution and regeneration or fractionation processes. The [bmim][HSO4] showed different behaviour from other ILs exhibiting similarities to acid hydrolysis pre-treatment. Pre-treatments with [bmim][HSO4] and [bmim][N(CN)2] allowed to recover cellulose rich-samples with a carbohydrate content between 87 to 90wt%. In order to verify the potential further applicability of obtained carbohydrate-rich fractions as well as to evaluate the pre-treatment efficiency, the cellulose-rich fraction obtained from treatment with [emim][CH3COO] was applied for the enzymatic hydrolysis. Achieved results showed a high digestibility of cellulose-rich samples and confirmed a high glucose yield for the optimised methodology. Qualitative and quantitative analyses of the pre-treatment with ILs were made using the Fourier-Transform Infrared Spectroscopy (FT-IR). The NMR analysis was used to evaluate the purity of ILs after pre-treatments. Results of enzymatic hydrolysis analysis were controlled by the HPLC.

Styles APA, Harvard, Vancouver, ISO, etc.

McKinnie-Hill, J. S. « Mechanochemistry : an interesting approach to the pre-treatment of biomass ». Thesis, Queen's University Belfast, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.679263.

Texte intégral

Résumé :

A technique that is becoming more widespread in usage and popularity, ball milling has been used successfully in the pretreatment of sodium lignosulphonate (NaLS), a waste biomass material. The ball milled material produced higher yields of commercially valuable aromatic products, particularly vanillin in an industry standard copper-catalysed aerobic oxidation reaction. Through the optimisation of the parameters of this pretreatment technique both for NaLS alone and NaLS with sodium hydroxide and calcium oxide as additives, the vanillin yield after oxidation of the pretreated material could be increased by over 100 %. The generation of vanillin in NaLS in the solid state during ball milling was also observed for the first time confirming that mechanochemical transformation of the NaLS was taking place. Despite the difficulties associated with the analysis of such a heterogeneous and complex biopolymer, SEM imaging, GPC analysis and 2-D NMR analysis were used to identify some of the major chemical and physical changes occurring in the material during mechanochemical pretreatment. An HPLC analytical method for accurate measurement of the main oxidation products was also developed. The effect of using milling media of a different material on the pretreatment and subsequent oxidation reactions revealed that this pretreatment is transferable between different types and scale of equipment but that the results are sensitive to both materials of construction and storage conditions for analytical samples. The extrapolation of this pretreatment technique to other reactions of NaLS, hydrogenolysis for example, and to other biomass substrates was also investigated but with varying degrees of success, indicating that the mechanochemical changes can be subtle and highly reaction specific. Initial attempts at providing more mechanistic information were made through the synthesis and transformations of some simple lignosulphonate model compounds. These provided confirmation that the mechanistic scenario is complex and that several pathways are likely to be operating in parallel in the transformations of both model and polymer substrates.

Styles APA, Harvard, Vancouver, ISO, etc.

João, Karen Andreína Godinho. « Pre-treatment of different types of lignocellulosic biomass using ionic liquids ». Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/10386.

Texte intégral

Résumé :

Dissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para obtenção do grau Mestre em Biotecnologia
The pre-treatment of biomass by ionic liquid (IL) is a method opening new possibilities of biomass fractionation for further valorisation of low value feedstock. This work is dedicated to study on the pre-treatment and fractionation of different types of lignocellulosic biomass into its major constituent fractions (cellulose, hemicellulose and lignin), using ILs. The biomass tested was: wheat straw, sugarcane bagasse, rice straw and triticale. Initially, the optimised methods were development basing on two methodologies described in the literature. This method allows the separation into high purity carbohydrate-rich (cellulose and hemicellulose) and lignin-rich fractions and permits an efficient IL recovery. The possibility of IL reuse was confirmed, demonstrating the great potential of the established method. The pre-treatment of various biomasses confirms the versatility and efficiency of the optimised methodology since not only the complete macroscopic dissolution of each biomass was achieved but also the fractionation process was successfully performed. Pre-treatment of sugarcane bagasse and triticale allowed to obtained cellulose samples rich in carbohydrate up to 90 wt %. In order to verify the potential further applicability of the obtained carbohydrate-rich fractions, as well as to evaluate the pre-treatment efficiency, the cellulose-rich fraction resulting from 1-ethyl-3-methylimidazolium acetate ([emim][OAc]) pre-treatment was subjected to enzymatic hydrolysis. Results showed a very high digestibility of the cellulose-rich samples and confirmed a high glucose yield for the optimised pre-treatment methodology. The samples obtained after the pre-treatment with ILs were qualitatively and quantitatively analysed by Fourier Transform Infrared Spectroscopy (FTIR). After the pre-treatment, the purity of the recovered ILs was evaluated through Nuclear Magnetic Resonance spectroscopy (NMR). The enzymatic hydrolysis results were analysed by High-Performance Liquid Chromatography(HPLC).

Styles APA, Harvard, Vancouver, ISO, etc.

Tran, Khanh Cong. « Anaerobic digestion of microalgal biomass : effects of solid concentration and pre-treatment ». Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/415791/.

Texte intégral

Résumé :

Microalgae have recently attracted considerable attention as a potential substrate for biofuel production. Through the anaerobic digestion process, microalgal biomass can be converted to biogas. Although the first work on anaerobic digestion of microalgae appeared in the 1950s, for a long time further information on AD of microalgae was scarce. This study assessed the potential for energy recovery from microalgal biomass grown in two large-scale systems in Spain: a closed tubular photobioreactor (PBR) and an open raceway. A series of digestion trials was carried out using freeze dried microalgae (FDA) from the PBR and fresh frozen microalgae (FFA) from the open raceway system as feedstock. Results from biochemical methane potential (BMP) assays showed that both feedstocks were poorly degraded and gave low methane yields. The specific methane yields of FDA and FFA were 0.161 and 0.220 L CH4 g-1 VS , respectively, which is only about 30% and 44% of the Theoretical Methane Potential (TMP) of these substrates based on their elemental composition. Digestion of FDA under semi-continuous conditions was stable at feedstock concentrations of up to 10% VS, equivalent to a hydraulic retention time of 20 days. Specific methane yields (SMY) were 0.11 - 0.12 L CH4 g-1 VS, corresponding to 69 - 75% of the value obtained from BMP. Digestion of FDA at 20% VS concentration gave only 0.09 L CH4 g-1 VS which is 56% of the value from BMP, or ~21% of the measured calorific value (CV). The digesters operating at 20% VS were able to achieve meta-stable operation at very high total ammonia nitrogen (TAN) concentrations of up to 12 g L-1 while showing reasonable methane production. They therefore showed a degree of adaptation to high TAN, but no evidence of improved biomass degradation even after operating periods in excess of 800 days. Results from the isotope labelling experiment indicated that syntrophic methanogenic pathway was the major route in high TAN concentration digesters. Digestion of FFA was stable at feedstock concentration of 4.33% VS and OLR up to 3.5 g VS L-1 day-1. SMY obtained under semi-continuous conditions was ~0.13 L CH4 g-1 VS, corresponding to 23% of the measured CV. A series of pretreatments were carried out on FFA, and the combined thermal-alkaline pretreatment (dosage of 3% w/w NaOH and incubated in water bath at 80 oC for 2 hours) enhanced SMY by 42% compared with that of untreated FFA obtained under batch condition. The results from semi-continuous condition indicated that some improvement was achieved with the thermal alkaline pretreatment, but there were also signs of inhibition due to the high alkaline dosages of 3% NaOH (w/w) required. There is clearly scope for optimisation of the treatment of feedstock and adaptation of the inoculum.

Styles APA, Harvard, Vancouver, ISO, etc.

Bronson, Benjamin. « The Effects of Feedstock Pre-treatment on the Fluidized Bed Gasification of Biomass ». Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30690.

Texte intégral

Résumé :

Gasification is a promising technique for transforming solid biomass into a gas that can be used to produce renewable heat, power, fuels or chemicals. Biomass materials, such as forestry residues, can be high moisture, heterogeneous mixtures with low bulk density - properties that make them difficult to handle and convert. Consequently, this means that feedstock pre-treatment is usually necessary in order to facilitate its conversion by gasification. Pre-treatments methods, which include comminution, drying, pelletization, torrefaction, or carbonization will affect the properties of the biomass which will affect their gasification in a fluidized bed. The objective of this thesis was to determine how biomass pre-treatment can influence gasification in a fluidized bed. A single forestry residue was processed using five pre-treatment process levels: sieving (as a surrogate for comminution), drying (moisture content), pelletization, torrefaction, and carbonization. The fractions derived from these processes were gasified in a small pilot-scale air blown bubbling fluidized bed gasifier (feed rate 8 – 25 kg/h). The particle size and form had an impact on the gas composition, tar content, and cold gas efficiency of the gasification. Over the conditions tested, the finest fraction produced a gas with a H2/CO ratio of 0.36 – 0.47 containing 7 – 59 g/m3 tar (gravimetric) at a cold gas efficiency of 30 - 41%. The pellets on the other hand yielded a gas with a H2/CO ratio of 0.89 - 1.14, containing 3 – 37 g/m3 tar (gravimetric) at a cold gas efficiency of 41 – 60%. Drying, torrefaction and carbonization also had an impact on the gasification performance. Carbonization was able to reduce the yield of tar (as measured by gas chromatography) by more than 95% relative to the parent material. Finally, four different forestry residues were gasified in a large pilot-scale bubbling fluidized bed with air and steam-oxygen mixtures (feed rate 200 – 245 kg/h) in order to assess whether the comminution effect could be observed at the large scale. One feedstock with a significant portion of small particles showed the expected effects compared to the feed materials with large feed particles: lower H2/CO ratio, greater tar yield, lower cold gas efficiency while the other feed material containing a substantial amount of small particles did not show these effects.

Styles APA, Harvard, Vancouver, ISO, etc.

Rupar-Gadd, Katarina. « Biomass Pre-treatment for the Production of Sustainable Energy : Emissions and Self-ignition ». Doctoral thesis, Växjö : Växjö University Press, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-510.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Hague, Robert A. « Pre-treatment and pyrolysis of biomass for the production of liquids for fuels and speciality chemicals ». Thesis, Aston University, 1998. http://publications.aston.ac.uk/10064/.

Texte intégral

Résumé :

Fast pyrolysis of biomass is a significant technology for producing pyrolysis liquids [also known as bio-oil], which contain a number of chemicals. The pyrolysis liquid can be used as a fuel, can be produced solely as a source of chemicals or can have some of the chemicals extracted and the residue used as a fuel. There were two primary objectives of this work. The first was to determine the fast pyrolysis conditions required to maximise the pyrolysis liquid yield from a number of biomass feedstocks. The second objective was to selectively increase the yield of certain chemicals in the pyrolysis liquid by pre-treatment of the feedstock prior to pyrolysis. For a particular biomass feedstock the pyrolysis liquid yield is affected by the reactor process parameters. It has been found that, providing the other process parameters are restricted to the values shown below, reactor temperature is the controlling parameter. The maximum pyrolysis liquid yield and the temperature at which it occurs has been found by a series of pyrolysis experiments over the temperature range 400-600°C. high heating rates > 1000°C/s; pyrolysis vapour residence times <2 seconds; pyrolysis vapour temperatures >400 but <500°C; rapid quenching of the product vapours. Pre-treatment techniques have been devised to modify the chemical composition and/or structure of the biomass in such a way as to influence the chemical composition of the pyrolysis liquid product. The pre-treatments were divided into two groups, those that remove material from the biomass and those which add material to the biomass. Component removal techniques have selectively increased the yield of levoglucosan from 2.45 to 18.58 mf wt.% [dry feedstock basis]. Additive techniques have selectively increased the yield of hydroxyacetaldehyde from 7.26 to 11.63 mf w.% [dry feedstock basis]. Techno-economic assessment has been carried out on an integrated levoglucosan production process [incorporating pre-treatment, pyrolysis and chemical extraction stages] to assess which method of chemical production is the more cost effective. It has been found that it is better to pre-treat the biomass in order to increase the yield of specific chemicals in the pyrolysis liquid and hence improve subsequent chemicals extraction.

Styles APA, Harvard, Vancouver, ISO, etc.

Fivga, Antzela. « Comparison of the effect of pre-treatment and catalysts on liquid quality from fast pyrolysis of biomass ». Thesis, Aston University, 2012. http://publications.aston.ac.uk/16524/.

Texte intégral

Résumé :

The overall objective of this work was to compare the effect of pre-treatment and catalysts on the quality of liquid products from fast pyrolysis of biomass. This study investigated the upgrading of bio-oil in terms of its quality as a bio-fuel and/or source of chemicals. Bio-oil used directly as a biofuel for heat or power needs to be improved particularly in terms of temperature sensitivity, oxygen content, chemical instability, solid content, and heating values. Chemicals produced from bio-oil need to be able to meet product specifications for market acceptability. There were two main objectives in this research. The first was to examine the influence of pre-treatment of biomass on the fast pyrolysis process and liquid quality. The relationship between the method of pre-treatment of biomass feedstock to fast pyrolysis oil quality was studied. The thermal decomposition behaviour of untreated and pretreated feedstocks was studied by using a TGA (thermogravimetric analysis) and a Py-GC/MS (pyroprobe-gas chromatography/mass spectrometry). Laboratory scale reactors (100g/h, 300g/h, 1kg/h) were used to process untreated and pretreated feedstocks by fast pyrolysis. The second objective was to study the influence of numerous catalysts on fast pyrolysis liquids from wheat straw. The first step applied analytical pyrolysis (Py-GC/MS) to determine which catalysts had an effect on fast pyrolysis liquid, in order to select catalysts for further laboratory fast pyrolysis. The effect of activation, temperature, and biomass pre-treatment on catalysts were also investigated. Laboratory experiments were also conducted using the existing 300g/h fluidised bed reactor system with a secondary catalytic fixed bed reactor. The screening of catalysts showed that CoMo was a highly active catalyst, which particularly reduced the higher molecular weight products of fast pyrolysis. From these screening tests, CoMo catalyst was selected for larger scale laboratory experiments. With reference to the effect of pre-treatment work on fast pyrolysis process, a significant effect occurred on the thermal decomposition of biomass, as well as the pyrolysis products composition, and the proportion of key components in bio-oil. Torrefaction proved to have a mild influence on pyrolysis products, when compared to aquathermolysis and steam pre-treatment.

Styles APA, Harvard, Vancouver, ISO, etc.

Rocha, Glauco Yves Gomes dos Santos. « Hidrólise ácida do albedo de laranja lima ». Universidade Federal de Alagoas, 2016. http://www.repositorio.ufal.br/handle/riufal/1628.

Texte intégral

Résumé :

With the State of Alagoas as the third largest citrus producer in the Northeast region of Brazil, specifically cultivating Laranja Lima, being of fundamental importance the study of the hydrolyzate of Laranja Lima albedo for the planning of bioethanol production. The characterization of the Lima Orange albedo from the Cooplal juice industry of the municipality of Santana do Mundaú was carried out at the Bioflex 01 Industrial Laboratory of GRANBIO. For the hydrolysis process of the biomass were used the acids: hydrochloric, nitric, phosphoric and sulfuric with concentrations of 0.5 and 1.0% and periods of 30, 60, 90 and 120 minutes. The experimental design was completely randomized in the 4 x 2 x 4 factorial scheme, with three replications. Comparisons of the acid type averages within the concentrations and within the evaluation periods were done through the Tukey test at 5% probability. The hydrolysis with sulfuric acid obtained the best results for all variables studied. It is concluded that the hydrolysis process makes fermentable sugars of cellulose and hemicellulose available for the fermentation process.
Tendo o Estado de Alagoas como o terceiro maior produtor de citrus da região Nordeste do Brasil, cultivando especificamente Laranja Lima, sendo de fundamental importância o estudo do hidrolisado do albedo de Laranja Lima para o planejamento da produção de bioetanol. A caracterização do albedo da Laranja Lima da indústria de suco da Cooplal do município de Santana do Mundaú, foi realizado no Laboratório Industrial Bioflex 01 da GRANBIO. Para o processo de hidrólise da biomassa foram utilizados os ácidos: clorídrico, nítrico, fosfórico e sulfúrico com concentrações de 0,5 e 1,0% e períodos de 30, 60, 90 e 120 minutos. O delineamento experimental utilizado foi o inteiramente casualizado no esquema fatorial de 4 x 2 x 4, com três repetições. As comparações das médias de tipos de ácidos dentro das concentrações e dentro dos períodos de avaliação foram feitas através pelo teste de Tukey a 5% de probabilidade. A hidrólise com o ácido sulfúrico obteve os melhores resultados para todas variáveis estudados. Conclui-se que o processo de hidrólise torna os açúcares fermentescíveis da celulose e hemicelulose disponíveis para o processo fermentativo.

Styles APA, Harvard, Vancouver, ISO, etc.

Plus de sources

Livres sur le sujet "Biomass pre-treatment"

Roy, Shyamal. Pre-Treatment Methods of Lignocellulosic Biomass for Biofuel Production. Taylor & Francis Group, 2021.

Trouver le texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Roy, Shyamal. Pre-Treatment Methods of Lignocellulosic Biomass for Biofuel Production. Taylor & Francis Group, 2021.

Trouver le texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Pre-Treatment Methods of Lignocellulosic Biomass for Biofuel Production. Taylor & Francis Group, 2021.

Trouver le texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Roy, Shyamal. Pre-Treatment Methods of Lignocellulosic Biomass for Biofuel Production. Taylor & Francis Group, 2021.

Trouver le texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Bradstock, Ross A., A. Malcolm Gill et Richard J. Williams, dir. Flammable Australia. CSIRO Publishing, 2012. http://dx.doi.org/10.1071/9780643104839.

Texte intégral

Résumé :

In Flammable Australia: Fire Regimes, Biodiversity and Ecosystems in a Changing World, leading researchers in fire ecology and management discuss how fire regimes have shaped and will continue to shape the distribution and abundance of Australia’s highly diverse plants and animals. Central to this is the exploration of the concept of the fire regime – the cumulative pattern of fires and their individual characteristics (fire type, frequency, intensity, season) and how variation in regime components affects landscapes and their constituent biota. Contributions by 44 authors explore a wide range of topics including classical themes such as pre-history and evolution, fire behaviour, fire regimes in key biomes, plant and animal life cycles, remote sensing and modelling of fire regimes, and emerging issues such as climate change and fire regimes, carbon dynamics and opportunities for managing fire regimes for multiple benefits. In the face of significant global change, the conservation of our native species and ecosystems requires an understanding of the processes at play when fires and landscapes interact. This book provides a comprehensive treatment of this complex science, in the context of one of the world’s most flammable continents.

Styles APA, Harvard, Vancouver, ISO, etc.

Chapitres de livres sur le sujet "Biomass pre-treatment"

Sohail Toor, Saqib, Lasse Rosendahl, Jessica Hoffmann, Jens Bo Holm-Nielsen et Ehiaze Augustine Ehimen. « Lignocellulosic Biomass—Thermal Pre-treatment with Steam ». Dans Pretreatment Techniques for Biofuels and Biorefineries, 59–75. Berlin, Heidelberg : Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-32735-3_3.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Roy, Shyamal. « Conclusions and Recommendations ». Dans Pre-Treatment Methods of Lignocellulosic Biomass for Biofuel Production, 61–62. Boca Raton : CRC Press, 2021. http://dx.doi.org/10.1201/9781003203414-10.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Roy, Shyamal. « Physicochemical Pretreatments ». Dans Pre-Treatment Methods of Lignocellulosic Biomass for Biofuel Production, 13–22. Boca Raton : CRC Press, 2021. http://dx.doi.org/10.1201/9781003203414-3.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Roy, Shyamal. « Physical Pretreatments ». Dans Pre-Treatment Methods of Lignocellulosic Biomass for Biofuel Production, 6–12. Boca Raton : CRC Press, 2021. http://dx.doi.org/10.1201/9781003203414-2.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Roy, Shyamal. « Economics of Different Pretreatment Technologies ». Dans Pre-Treatment Methods of Lignocellulosic Biomass for Biofuel Production, 56–58. Boca Raton : CRC Press, 2021. http://dx.doi.org/10.1201/9781003203414-8.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Roy, Shyamal. « Biological Pretreatment ». Dans Pre-Treatment Methods of Lignocellulosic Biomass for Biofuel Production, 45–49. Boca Raton : CRC Press, 2021. http://dx.doi.org/10.1201/9781003203414-5.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Roy, Shyamal. « Combined Pretreatment ». Dans Pre-Treatment Methods of Lignocellulosic Biomass for Biofuel Production, 50–51. Boca Raton : CRC Press, 2021. http://dx.doi.org/10.1201/9781003203414-6.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Roy, Shyamal. « Chemical Pretreatments ». Dans Pre-Treatment Methods of Lignocellulosic Biomass for Biofuel Production, 23–44. Boca Raton : CRC Press, 2021. http://dx.doi.org/10.1201/9781003203414-4.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Roy, Shyamal. « Introduction ». Dans Pre-Treatment Methods of Lignocellulosic Biomass for Biofuel Production, 1–5. Boca Raton : CRC Press, 2021. http://dx.doi.org/10.1201/9781003203414-1.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Roy, Shyamal. « Problems of the Industrial Adaptation ». Dans Pre-Treatment Methods of Lignocellulosic Biomass for Biofuel Production, 52–55. Boca Raton : CRC Press, 2021. http://dx.doi.org/10.1201/9781003203414-7.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Actes de conférences sur le sujet "Biomass pre-treatment"

Tom L. Richard, Sophie Proulx, Kenneth J. Moore et Shawn Shouse. « Ensilage Technology for Biomass Pre-treatment and Storage ». Dans 2001 Sacramento, CA July 29-August 1,2001. St. Joseph, MI : American Society of Agricultural and Biological Engineers, 2001. http://dx.doi.org/10.13031/2013.7304.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Goldsteins, Linards, Raimonds Valdmanis et Maija Zake. « Activated combustion of biomass blends by microwave pre-treatment of straw ». Dans 20th International Scientific Conference Engineering for Rural Development. Latvia University of Life Sciences and Technologies, Faculty of Engineering, 2021. http://dx.doi.org/10.22616/erdev.2021.20.tf028.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Salleh, Shanti F., Fiouna D. Wan, Nazeri A. Rahman et Mohd F. Atan. « Pre-Treatment of Lignocellulosic Biomass (Empty Fruit Bunch) using Ionic Liquids as Solvents ». Dans Proceedings of the International Engineering Conference. Singapore : Research Publishing Services, 2014. http://dx.doi.org/10.3850/978-981-09-4587-9_p06.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Cheong, Yuen Theng, Adeline Seak May Chua et Gek Cheng Ngoh. « Optimization of Deep Eutectic Solvent Pretreatment of Oil Palm Empty Fruit Bunch Incorporated Assistive Heating Methods ». Dans International Technical Postgraduate Conference 2022. AIJR Publisher, 2022. http://dx.doi.org/10.21467/proceedings.141.17.

Texte intégral

Résumé :

One of the most underutilized biomasses wastes in Malaysia is oil palm empty fruit bunch (EFB). Lignin presented in EFB was found to contain the highest energy content compared to hemicellulose and cellulose. Therefore, EFB can be the sources of lignin extraction to generate profit for the oil palm industry. Deep eutectic solvent (DES) has emerged as a new green solvent in biomass fractionation field as it has impressive delignification efficiency and low toxicity. Many researchers had delignified biomass using DES with conventional oil bath heating. The conventional method for delignification is energy-intensive and involving long pre-treatment time. Hence, this study aims to achieve effective extraction yield while reducing energy usage to extract lignin from oil palm empty fruit bunch (EFB) using DES with aid of microwave heating (MAE) and ultrasonic irradiation (UAE). The feasible extraction scheme was used to investigate parameters include water content in DES, irradiation duration, and heating method power. The crucial parameters affecting MAE pre-treatment was found to be microwave power and duration. As for UAE pre-treatment, ultrasonic amplitude and water content in DES plays a significant role on delignifying EFB using DES. In addition, the models developed for both pre-treatments are identified to be significant and thus the optimized pre-treatment conditions can be obtained. This finding is anticipated to generate an effective DES pre-treatment with integration of assistive heating techniques. From regression analysis, the optimized condition for UAE pre-treatment is at 75% amplitude for 8 min 38s, resulting in an 13.20% of lignin removal from EFB. As for the MAE pre-treatment, 56.30% of delignification efficiency was achieved using optimized condition at 300 W for 2 min 42 sec.

Styles APA, Harvard, Vancouver, ISO, etc.

Kadir, Wan Nadiah Amalina, Man Kee Lam, Yoshimitsu Uemura, Jun-Wei Lim et Keat Teong Lee. « Harvesting and pre-treatment of microalgae biomass via ozonation for lipid extraction : A preliminary study ». Dans PROCEEDINGS OF THE 3RD INTERNATIONAL CONFERENCE ON APPLIED SCIENCE AND TECHNOLOGY (ICAST’18). Author(s), 2018. http://dx.doi.org/10.1063/1.5055466.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Wang, Qichen, Brendan T. Higgins, Haodong Ji et Dongye Zhao. « Improved microalgae biomass production and wastewater treatment : Pre-treating municipal anaerobic digestate for algae cultivation ». Dans 2018 Detroit, Michigan July 29 - August 1, 2018. St. Joseph, MI : American Society of Agricultural and Biological Engineers, 2018. http://dx.doi.org/10.13031/aim.201801333.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Herlambang, Aldillah, Shafwan Amrullah, Daniyanto Daniyanto, Yano Surya Pradana, Rochmadi et Arief Budiman. « The effect of temperature and biomass pre-treatment on non-catalytic gasification of Indonesian sugarcane bagasse ». Dans 2ND INTERNATIONAL CONFERENCE ON CHEMISTRY, CHEMICAL PROCESS AND ENGINEERING (IC3PE). Author(s), 2018. http://dx.doi.org/10.1063/1.5064992.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Bursche, Jamile, Johannes Kramer, Frank Rogener et Christiane Rieker. « Effects of using green waste compost as a biological pre-treatment of lignocellulosic biomass to produce bioenergy ». Dans 2018 7th International Energy and Sustainability Conference (IESC). IEEE, 2018. http://dx.doi.org/10.1109/iesc.2018.8439975.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Gera, Suchita, Prakash Kumar BG et Ramachandran Subramanian. « Development of Pre-treatment Methods for Biomass-based Substrates for Fermentation Processes with a focus on Ziziphus sp. » Dans Annual International Conference on Advances in Biotechnology. Global Science & Technology Forum (GSTF), 2014. http://dx.doi.org/10.5176/2251-2489_biotech14.66.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Chaussy, Mariann, Morgan Chabannes, Arnaud Day, David Bulteel, Frederic Becquart et Boubker Laidoudi. « Plant Biomass Used for Green Concrete : A Review of Treatment Methods ». Dans 4th International Conference on Bio-Based Building Materials. Switzerland : Trans Tech Publications Ltd, 2022. http://dx.doi.org/10.4028/www.scientific.net/cta.1.601.

Texte intégral

Résumé :

Human activities require a growing need for raw materials. In order to contribute to sustainable development, many business sectors are focusing on biomass valorization. Whether from dedicated crops or first industrial processing, it generates materials with high potential that can be used in many fields. Non-food uses mainly concern the energy, chemical, and construction sectors. Whatever the intended application, a pre-treatment stage is essential to clean the material and/or to access a specific fraction. An additional modification may occur in order to endow the material with a new function thanks to a process known as functionalization. Uses of plant fractions (aggregates) in combination with cement offer advantages like low-density materials with attractive thermophysical properties for building. However, their development is limited by the compatibility of crop by-products with hydraulic binders such as Ordinary Portland Cement (OPC). This includes delays in setting time and hydrophilic character of vegetal components and their interaction with an alkaline environment. The aggregate/cement interfaces can therefore be strongly affected. In addition, the diversity of crop by-products and mineral binders increases the level of complexity. In order to overcome these drawbacks, the treatment of plant fractions before their use with mineral binders may result in significant benefits. In this way, various treatments have been tested, but the methods used at an industrial scale remain relatively under-researched. The purpose of this review is therefore to highlight the mechanisms involved in each specific process, thus justifying the operating conditions specific to each. This bibliography study aims to highlight potential treatments that could apply to biomass before their mixing with cementitious binders. According to the objective, a distinction can be made between extraction processes as hydrothermal or solvent treatments, assisted or not, and structural modification processes as surface treatments, impregnation, or grafting.

Styles APA, Harvard, Vancouver, ISO, etc.

Nous offrons des réductions sur tous les plans premium pour les auteurs dont les œuvres sont incluses dans des sélections littéraires thématiques. Contactez-nous pour obtenir un code promo unique!