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Characterization Of Pyrolysis Products Obtained During The Preparation Of Bio Oil And Activated Carbon
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Book Synopsis Characterization of Pyrolysis Products Obtained During the Preparation of Bio-Oil and Activated Carbon by : Rosa Miranda
Download or read book Characterization of Pyrolysis Products Obtained During the Preparation of Bio-Oil and Activated Carbon written by Rosa Miranda and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Characterization of Pyrolysis Products Obtained During the Preparation of Bio-Oil and Activated Carbon.
Book Synopsis Catalytic Microwave Pyrolysis of Biomass for Renewable Phenols and Fuels by : Quan Bu
Download or read book Catalytic Microwave Pyrolysis of Biomass for Renewable Phenols and Fuels written by Quan Bu and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Bio-oil is an unstable intermediate and needs to be upgraded before its use. This study focused on improving the selectivity of bio-oilby catalytic pyrolysis of biomass using activated carbon (AC) catalysts. Firstly, the effects of process conditions on product quality and product yield were investigated by catalytic microwave pyrolysis of biomass using AC as a catalyst. The optimized reaction condition for bio-oil and volatile was determined. Chemical composition analysis by GC/MS showed that phenols rich bio-oils were obtained. Furthermore, the effects of different carbon sources based AC catalysts on products yield and chemical composition selectivity of obtained bio-oils were investigated during microwave pyrolysis of Douglas fir pellet. The catalysts recycling test of the selected catalysts indicated that the AC catalysts can be used for 3-4 times with high concentration of phenolic compounds. The individual surface polar/acidic oxygen functional groups analysis suggested the changes of functional groups in ACs explained the reaction mechanism of this process. In addition, the potential for production of renewable phenols and fuels by catalytic pyrolysis of biomass using lignin as a model compound was explored. The main chemical compounds of the obtained bio-oils were phenols, guaiacols, hydrocarbons and esters. The thermal decomposition behaviors of lignin and kinetics study were investigated by TGA. The change of functional groups of AC catalyst indicated the bio-oil reduction was related to the reaction mechanism of this process. Finally, the effects of Fe-modified AC catalyst on bio-oil upgrading and kintic study of biomass pyrolysis were investigated. The catalytic pyrolysis of biomass using the Fe-modified AC catalyst may promote the occurrence of the fragmentation of cellulose, rather than repolymerization as in the non-catalytic pyrolysis which leads to partial of guaiacols derived from furans. Results showed that the main chemical compounds of bio-oils were furans, phenols, guaiacols, and ketones/ethers. The activation energy of Douglas fir by microwave pyrolysis was remarkable lower than by conventional pyrolysis using TGA. And the reaction mechanism of this process was analyzed.
Book Synopsis Lignocellulosic Precursors Used in the Synthesis of Activated Carbon by : Virginia Hernández Montoya
Download or read book Lignocellulosic Precursors Used in the Synthesis of Activated Carbon written by Virginia Hernández Montoya and published by BoD – Books on Demand. This book was released on 2012-02-29 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present book discusses the principal lignocellulosic precursors used in the elaboration of activated carbons in different countries such as Asia, America, Europe and Africa; the different methods and experimental conditions employed in the synthesis of activated carbons, including one analysis of the principal stages of the preparation such as carbonization and activation (i.e., chemical or physical activation). Also, the recent and more specialized techniques used in the characterization of activated carbons are discussed in this book. For example, the techniques employed to determine textural parameters (mercury porosimetry and gas adsorption isotherms at 77 K) and different spectroscopies to determine chemical functionality (Raman, FT-IR, etc.) and other X-Ray techniques. Additionally, an overview of the application of activated carbons obtained from lignocellulosic precursors for wastewater treatment. Specifically, the analysis and discussion are focused on the advantages and capabilities of activated carbons for the removal of relevant toxic compounds and pollutants from water such as heavy metals, dyes, phenol, etc. Finally, the use of pyrolysis method for the valorization of two Mexican typical agricultural wastes (orange peel and pecan nut shell) for energy and carbon production is considered in this book.
Book Synopsis Pyrolysis of Biomass by : Shurong Wang
Download or read book Pyrolysis of Biomass written by Shurong Wang and published by Walter de Gruyter GmbH & Co KG. This book was released on 2016-12-05 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the development of societies fossil energy is no longer the only energy resource, and increasing attention had been paid to alternative energy. Biomass is considered to be one of the alternatives due to efficiency and low cost. This book presents biomass pyrolysis behavior for three main components: Cellulose, Hemicellulose and Lignin, and discusses the influence of mineral salts , zeolite catalysts and metal oxide on their pyrolysis.
Book Synopsis Pyrolysis Oils by : Tushar P. Vispute
Download or read book Pyrolysis Oils written by Tushar P. Vispute and published by . This book was released on 2011 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a growing need to develop the processes to produce renewable fuels and chemicals due to the economical, political, and environmental concerns associated with the fossil fuels. One of the most promising methods for a small scale conversion of biomass into liquid fuels is fast pyrolysis. The liquid product obtained from the fast pyrolysis of biomass is called pyrolysis oil or bio-oil. It is a complex mixture of more than 300 compounds resulting from the depolymerization of biomass building blocks, cellulose; hemi-cellulose; and lignin. Bio-oils have low heating value, high moisture content, are acidic, contain solid char particles, are incompatible with existing petroleum based fuels, are thermally unstable, and degrade with time. They cannot be used directly in a diesel or a gasoline internal combustion engine. One of the challenges with the bio-oil is that it is unstable and can phase separate when stored for long. Its viscosity and molecular weight increases with time. It is important to identify the factors responsible for the bio-oil instability and to stabilize the bio-oil. The stability analysis of the bio-oil showed that the high molecular weight lignin oligomers in the bio-oil are mainly responsible for the instability of bio-oil. The viscosity increase in the bio-oil was due to two reasons: increase in the average molecular weight and increase in the concentration of high molecular weight oligomers. Char can be removed from the bio-oil by microfiltration using ceramic membranes with pore sizes less than 1 [mu meter]. Removal of char does not affect the bio-oil stability but is desired as char can cause difficulty in further processing of the bio-oil. Nanofiltration and low temperature hydrogenation were found to be the promising techniques to stabilize the bio-oil. Bio-oil must be catalytically converted into fuels and chemicals if it is to be used as a feedstock to make renewable fuels and chemicals. The water soluble fraction of bio-oil (WSBO) was found to contain C2 to C6 oxygenated hydrocarbons with various functionalities. In this study we showed that both hydrogen and alkanes can be produced with high yields from WSBO using aqueous phase processing. Hydrogen was produced by aqueous phase reforming over Pt/Al2O3 catalyst. Alkanes were produced by hydrodeoxygenation over Pt/SiO2-Al2O3. Both of these processes were preceded by a low temperature hydrogenation step over Ru/C catalyst. This step was critical to achieve high yields of hydrogen and alkanes. WSBO was also converted to gasoline-range alcohols and C2 to C6 diols with up to 46% carbon yield by a two-stage hydrogenation process over Ru/C catalyst (125 °C) followed by over Pt/C (250 °C) catalyst. Temperature and pressure can be used to tune the product selectivity. The hydroprocessing of bio-oil was followed by zeolite upgrading to produce C6 to C8 aromatic hydrocarbons and C2 to C4 olefins. Up to 70% carbon yield to aromatics and olefins was achieved from the hydrogenated aqueous fraction of bio-oil. The hydroprocessing steps prior to the zeolite upgrading increases the thermal stability of bio-oil as well as the intrinsic hydrogen content. Increasing the thermal stability of bio-oil results in reduced coke yields in zeolite upgrading, whereas, increasing the intrinsic hydrogen content results in more oxygen being removed from bio-oil as H2O than CO and CO2. This results in higher carbon yields to aromatic hydrocarbon and olefins. Integrating hydroprocessing with zeolite upgrading produces a narrow product spectrum and reduces the hydrogen requirement of the process as compared to processes solely based on hydrotreating. Increasing the yield of petrochemical products from biomass therefore requires hydrogen, thus cost of hydrogen dictates the maximum economic potential of the process.
Book Synopsis Analytical Pyrolysis by : Peter Kusch
Download or read book Analytical Pyrolysis written by Peter Kusch and published by BoD – Books on Demand. This book was released on 2019-02-13 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analytical pyrolysis deals with the structural identification and quantitation of pyrolysis products with the ultimate aim of establishing the identity of the original material and the mechanisms of its thermal decomposition. The pyrolytic process is carried out in a pyrolyzer interfaced with analytical instrumentation such as gas chromatography (GC), mass spectrometry (MS), gas chromatography coupled with mass spectrometry (GC/MS), or with Fourier-transform infrared spectroscopy (GC/FTIR). By measurement and identification of pyrolysis products, the molecular composition of the original sample can often be reconstructed.This book is the outcome of contributions by experts in the field of pyrolysis and includes applications of the analytical pyrolysis-GC/MS to characterize the structure of synthetic organic polymers and lignocellulosic materials as well as cellulosic pulps and isolated lignins, solid wood, waste particle board, and bio-oil. The thermal degradation of cellulose and biomass is examined by scanning electron micrography, FTIR spectroscopy, thermogravimetry (TG), differential thermal analysis, and TG/MS. The calorimetric determination of high heating values of different raw biomass, plastic waste, and biomass/plastic waste mixtures and their by-products resulting from pyrolysis is described.
Book Synopsis Biomass Chars: Elaboration, Characterization and Applications Ⅱ by : Lionel Limousy
Download or read book Biomass Chars: Elaboration, Characterization and Applications Ⅱ written by Lionel Limousy and published by MDPI. This book was released on 2019-10-16 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biomass can be converted to energy, biofuels, and bioproducts via thermochemical conversion processes, such as combustion, pyrolysis, and gasification. Combustion technology is most widely applied on an industrial scale. However, biomass gasification and pyrolysis processes are still in the research and development stage. The major products from these processes are syngas, bio-oil, and char (called also biochar for agronomic application). Among these products, biomass chars have received increasing attention for different applications, such as gasification, co-combustion, catalysts or adsorbents precursors, soil amendment, carbon fuel cells, and supercapacitors. This Special Issue provides an overview of biomass char production methods (pyrolysis, hydrothermal carbonization, etc.), characterization techniques (e.g., scanning electronic microscopy, X-ray fluorescence, nitrogen adsorption, Raman spectroscopy, nuclear magnetic resonance spectroscopy, X-ray photoelectron spectroscopy, and temperature programmed desorption and mass spectrometry), their properties, and their suitable recovery processes.
Book Synopsis Pyrolysis of Biomass by : Shurong Wang
Download or read book Pyrolysis of Biomass written by Shurong Wang and published by Walter de Gruyter GmbH & Co KG. This book was released on 2016-12-05 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the development of societies fossil energy is no longer the only energy resource, and increasing attention had been paid to alternative energy. Biomass is considered to be one of the alternatives due to efficiency and low cost. This book presents biomass pyrolysis behavior for three main components: Cellulose, Hemicellulose and Lignin, and discusses the influence of mineral salts , zeolite catalysts and metal oxide on their pyrolysis.
Book Synopsis Production of Biofuels and Chemicals from Lignin by : Zhen Fang
Download or read book Production of Biofuels and Chemicals from Lignin written by Zhen Fang and published by Springer. This book was released on 2016-09-28 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides state-of-the-art reviews, current research on and the prospects of lignin production, biological, thermal and chemical conversion methods, and lignin technoeconomics. Fundamental topics related to lignin chemistry, properties, analysis, characterization, and depolymerization mechanisms, as well as enzymatic, fungal and bacterial degradation methods are covered. The book also examines practical topics related to technologies for lignin and ultra-pure lignin recovery, activated carbon, carbon fiber production and materials, and addresses the biological conversion of lignin with fungi, bacteria or enzymes to produce chemicals, along with chemical, catalytic, thermochemical and solvolysis conversion methods. Lastly, it presents a case study on practical polyurethane foam production using lignin. Lignin has a bright future and will be an essential feedstock for producing renewable chemicals, biofuels and value-added products. Offering comprehensive information on this promising material, the book represents a valuable resource for students, researchers, academicians and industrialists in the field of biochemistry and energy.
Book Synopsis Recent Perspectives in Pyrolysis Research by : Mattia Bartoli
Download or read book Recent Perspectives in Pyrolysis Research written by Mattia Bartoli and published by BoD – Books on Demand. This book was released on 2022-04-13 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent Perspectives in Pyrolysis Research presents and discusses different routes of pyrolytic conversions. It contains exhaustive and comprehensive reports and studies of the use of pyrolysis for energy and materials production and waste management.
Book Synopsis Pyrolysis and Gasification by : G.L. Ferrero
Download or read book Pyrolysis and Gasification written by G.L. Ferrero and published by Springer. This book was released on 1989-12-31 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sustainable Food Waste-to-Energy Systems by : Thomas Trabold
Download or read book Sustainable Food Waste-to-Energy Systems written by Thomas Trabold and published by Academic Press. This book was released on 2018-09-05 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable Food Waste-to-Energy Systems assesses the utilization of food waste in sustainable energy conversion systems. It explores all sources of waste generated in the food supply chain (downstream from agriculture), with coverage of industrial, commercial, institutional and residential sources. It provides a detailed analysis of the conventional pathways for food waste disposal and utilization, including composting, incineration, landfilling and wastewater treatment. Next, users will find valuable sections on the chemical, biochemical and thermochemical waste-to-energy conversion processes applicable for food waste and an assessment of commercially available sustainable food waste-to-energy conversion technologies. Sustainability aspects, including consideration of environmental, economic and social impacts are also explored. The book concludes with an analysis of how deploying waste-to-energy systems is dependent on cross-cutting research methods, including geographical information systems and big data. It is a useful resource for professionals working in waste-to-energy technologies, as well as those in the food industry and food waste management sector planning and implementing these systems, but is also ideal for researchers, graduate students, energy policymakers and energy analysts interested in the most recent advances in the field. - Provides guidance on how specific food waste characteristics drive possible waste-to-energy conversion processes - Presents methodologies for selecting among different waste-to-energy options, based on waste volumes, distribution and properties, local energy demand (electrical/thermal/steam), opportunities for industrial symbiosis, regulations and incentives and social acceptance, etc. - Contains tools to assess potential environmental and economic performance of deployed systems - Links to publicly available resources on food waste data for energy conversion
Book Synopsis Pyrolysis Bio-oil as a Renewable Fuel and Source of Chemicals by : Eid Musa Alsbou
Download or read book Pyrolysis Bio-oil as a Renewable Fuel and Source of Chemicals written by Eid Musa Alsbou and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Bio-oil is a liquid fuel that can be produced from various lignocellulosic feedstocks via fast pyrolysis. It is a complex mixture comprised of hundreds of highly oxygenated organic compounds originating from lignin and carbohydrates and is recognized as a clean renewable bio-fuel, an attractive alternative to fossil fuels. It can be easily transported and used directly in boilers and modified turbines or upgraded/fractionated for drop in fuels or chemical production. Proper bio-oil characterization is important in optimizing the pyrolysis process, bio-oil upgrading and utilization, and its stabilization for long-term storage. With this in mind, research has been undertaken to develop better techniques to rapidly profile the composition of whole bio-oil samples, and an accelerated aging study performed to determine why bio-oil is unstable upon storage. Pyrolysis-GC/MS and TLC-FID were used as tools to differentiate bio-oils of different lignocellulosic biomasses, and among thermal-cracking (upgrading) fractions. Results showed that birch bio-oil had high syringol derivatives compared to pine and barley straw bio-oils which had higher guaiacol and non-methoxy-phenolic compounds, respectively, compared with birch bio-oil. TLC-FID was successful in bio-oil differentiation, showing diagnostic chromatographic profile differences. Direct infusion-ESI-ion trap MS and ESI-ion trap MS2 were successfully used in the analysis of forest-residue bio-oil and reference bio-oils from cellulose and hardwood lignin dissolved in methanol:water. NH4Cl can be used as a dopant to distinguish carbohydrate-derived products from other bio-oil components. NaOH and NaCl dopants resulted in the highest intensity peaks in negative ion mode and positive mode, respectively. Tandem MS, that is, ESI-Ion Trap MS2 was a successful tool for the confirmation of individual target ions such as levoglucosan and cellobiosan and for structural insight into lignin products. In accelerated aging (at 80 °C for 1, 3 and 7 days) studies, the physical and chemical properties of bio-oil from ash wood (produced from a pilot-scale auger pyrolyzer) and birch wood (lab-scale pyrolyzer) were monitored in order to identify the factors responsible for bio-oil instability. Water content, viscosity, and decomposition temperature (by TGA) increased for both bio-oil samples with aging. Chemical analysis showed reduction in amount of most of the bio-oil components as aging progressed, typically for are olefins and aldehydes. The oils remained a single phase throughout until the 7th day.
Book Synopsis Production and Characterization of Bio Oil from Wood Sawdust Via Fast Pyrolysis by : Sandra Diana Md Zin
Download or read book Production and Characterization of Bio Oil from Wood Sawdust Via Fast Pyrolysis written by Sandra Diana Md Zin and published by . This book was released on 2010 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, the production and characterization of bio oil from wood sawdust via fast pyrolysis was investigated. In fast pyrolysis of wood sawdust, the yields of the products were studied to elucidate the effect of the process parameters such as pyrolysis temperatures, nitrogen (N 2) gas flow rate and pyrolysis holding time. This research was carried out in a design electric furnace reactor and heated externally. The yields product from this experiment were collected and analyzed. The experiments were conducted at a temperature range of 450-550 0C. The holding time was varied in the range 1-5 minutes, and the nitrogen (N2) gas flow rate was varied in the range of 1-3 liter/min. The general characteristic of the product was investigated by the determination of the functional groups present in the bio oil using Fourier Transform Spectroscopy (FTIR). The best conditions to produce bio oil from various parameters that give the highest product yield were at temperature 500 0C, 1 minute of holding time and 3 liter/min of nitrogen (N2) gas flow rate. The maximum yield of bio oil produced from these conditions was 44.6%. From the analysis, it was shown that the pyrolysis oils contain complex compounds mostly functional groups of phenol, alcohols, ketones, aldehydes and carboxylic acids aromatic and also carbonyl structures.
Book Synopsis Biorefinery of Alternative Resources: Targeting Green Fuels and Platform Chemicals by : Sonil Nanda
Download or read book Biorefinery of Alternative Resources: Targeting Green Fuels and Platform Chemicals written by Sonil Nanda and published by Springer Nature. This book was released on 2020-03-31 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes recent advances in the processing of waste biomass resources to produce biofuels and biochemicals. Worldwide interest in clean energy sources, environmental protection, and mitigating global warming is rapidly gaining momentum and spurring on the search for alternative energy sources, especially for the transportation and industrial sectors. This book reviews the opportunities presented by low-cost organic waste materials, discussing their suitability for alternative fuel and fine chemical production, physicochemical characterization, conversion technologies, feedstock and fuel chemistry, refining technologies, fuel upgrading, residue management, and the circular economy. In addition, it explores applied aspects of biomass conversion by highlighting several significant thermochemical, hydrothermal and biological technologies. In summary, the book offers comprehensive and representative descriptions of key fuel processing technologies, energy conversion and management, waste valorization, eco-friendly waste remediation, biomass supply chain, lifecycle assessment, techno-economic analysis and the circular bioeconomy.
Book Synopsis Recent Advances in Pyrolysis by : Hassan Al- Haj Ibrahim
Download or read book Recent Advances in Pyrolysis written by Hassan Al- Haj Ibrahim and published by BoD – Books on Demand. This book was released on 2020-01-22 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pyrolysis is an irreversible thermochemical treatment process of materials at elevated temperatures in an inert atmosphere. It is basically a carbonisation process where an organic material is decomposed to produce a solid residue with high (or higher) carbon content and some volatile products. The decomposition reactions are accompanied in general with polymerisation and isomerisation reactions. The end products of pyrolysis can be controlled by optimizing pyrolysis parameters such as temperature and residence time. Pyrolysis is used heavily in the chemical industry to produce many forms of carbon and other chemicals from petroleum, coal, wood, oil shale, biomass or organic waste materials, and it is the basis of several methods for producing fuel from biomass. Pyrolysis also is the process of conversion of buried organic matter into fossil fuels.
Book Synopsis Sustainable Development in the Process Industries by : J. Harmsen
Download or read book Sustainable Development in the Process Industries written by J. Harmsen and published by John Wiley & Sons. This book was released on 2011-11-30 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: The complete, hands-on guide to sustainable development Today's process industries must develop natural resources within an eco-friendly framework that balances current demand with future need. Realizing this goal necessitates global vigilance of three key areas—people, planet, and prosperity—known as the Triple Bottom Line or, simply, the Triple P. Sustainable Development in the Process Industries details how worldwide implementation of sustainable processes in present-day industries can positively influence the Triple P going forward by lowering poverty, reducing pollution, and conserving resources. This in-depth guide includes: Real-world case studies and examples Individual chapters written by industry experts Application in industries such as petroleum and fuel, food, recycling, mineral processing, and water processing Focus on the micro (molecules, unit operations, processes) to the macro (industrial sites, value chains, regions, the world) Providing lessons with practical application rather than pure theory, Sustainable Development in the Process Industries offers sound solutions to social, ecological, and economic challenges imperative to assuring our planet's well-being for generations.
