Download or read book Carbon Dioxide selective Membranes Containing Sterically Hindered Amines written by Yanan Zhao and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Hydrogen is produced in large scale by steam reforming followed by water-gas-shift reaction, which yields a product stream consisting mainly of H2 and CO2. Purification of H2 from other gaseous compounds, mainly CO2, with significantly improved energy and cost efficiencies therefore becomes a crucial step for hydrogen economy that could ultimately provide hydrogen as a clean, renewable fuel as well as versatile chemical with wide commercial uses, reduce the reliance of modern industries on petroleum, and restrain global greenhouse gas emissions. Facilitated transport membranes are well suited for CO2/H2 separation due to high selectivity accompanied with high CO2 permeability, H2 product recovery at high pressure, and low energy and cost consumptions. The objective of this research is to develop advanced CO2-selective facilitated transport membranes with desired properties for practical gas separation applications.
Download or read book Carbon Dioxide selective Membranes and Their Applications in Hydrogen Processing written by Jian Zou and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: In this work, new CO2-selective membranes were synthesized and their applications for fuel cell fuel processing and synthesis gas purification were investigated. In order to enhance CO2 transport across membranes, the synthesized membranes contained both mobile and fixed site carriers in crosslinked poly(vinyl alcohol). The effects of crosslinking, membrane composition, feed pressure, water content, and temperature on transport properties were investigated. The membranes have shown a high permeability and a good CO2/H2 selectivity and maintained their separation performance up to 170°C. One type of these membranes showed a permeability of 8000 Barrers and a CO2/H2 selectivity of 290 at 110°C. The applications of the synthesized membranes were demonstrated in a CO2-removal experiment, in which the CO2 concentration in retentate was decreased from 17% to 10 ppm. With such membranes, there are several options to reduce the CO concentration of synthesis gas. One option is to develop a water gas shift (WGS) membrane reactor, in which both WGS reaction and CO2-removal take place. Another option is to use a proposed process consisting of a CO2-removal membrane followed by a conventional WGS reactor. In the membrane reactor, a CO concentration of less than 10 ppm and a H2 concentration of greater than 50% (on dry basis) were achieved at various flow rates of a simulated autothermal reformate. In the proposed CO2-removal/WGS process, with more than 99.5% CO2 removed from the synthesis gas, the CO concentration was decreased from 1.2% to less than 10 ppm (dry), which is the requirement for fuel cells. The WGS reactor had a gas hourly space velocity of 7650 h−1 at 150°C and the H2 concentration in the outlet was more than 54.7% (dry). The applications of the synthesized CO2-selective membranes for high-pressure synthesis gas purification were also studied. We studied the synthesized membranes at feed pressures 200 psia and temperatures ranging from 100-150°C. The effects of feed pressure, microporous support, temperature, and permeate pressure were investigated using a simulated synthesis gas containing 20% carbon dioxide and 80% hydrogen.
Download or read book Current Trends and Future Developments on Bio Membranes written by Angelo Basile and published by Elsevier. This book was released on 2018-07-18 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current Trends and Future Developments on (Bio-) Membranes: Carbon Dioxide Separation/Capture by Using Membranes explores the unique property of membranes to separate gases with different physical and chemical properties. The book covers both polymeric and inorganic materials for CO2 separation and explains their mechanism of action, allowing for the development and most appropriate and efficient processes. It also lists the advantages of using membranes instead of other separation techniques, i.e., their low operating costs and low energy consumption. This book offers a unique opportunity for scientists working in the field of membrane technology for CO2 separation and capture. - Outlines numerous membrane-based technologies for CO2 separation and capture - Lists new, advanced separation techniques and production processes - Includes various applications, modelling, and the economic considerations of each process - Covers advanced techniques for the separation of CO2 in natural gas
Download or read book Materials for Carbon Capture written by De-en Jiang and published by John Wiley & Sons. This book was released on 2020-02-25 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers a wide range of advanced materials and technologies for CO2 capture As a frontier research area, carbon capture has been a major driving force behind many materials technologies. This book highlights the current state-of-the-art in materials for carbon capture, providing a comprehensive understanding of separations ranging from solid sorbents to liquid sorbents and membranes. Filled with diverse and unconventional topics throughout, it seeks to inspire students, as well as experts, to go beyond the novel materials highlighted and develop new materials with enhanced separations properties. Edited by leading authorities in the field, Materials for Carbon Capture offers in-depth chapters covering: CO2 Capture and Separation of Metal-Organic Frameworks; Porous Carbon Materials: Designed Synthesis and CO2 Capture; Porous Aromatic Frameworks for Carbon Dioxide Capture; and Virtual Screening of Materials for Carbon Capture. Other chapters look at Ultrathin Membranes for Gas Separation; Polymeric Membranes; Carbon Membranes for CO2 Separation; and Composite Materials for Carbon Captures. The book finishes with sections on Poly(amidoamine) Dendrimers for Carbon Capture and Ionic Liquids for Chemisorption of CO2 and Ionic Liquid-Based Membranes. A comprehensive overview and survey of the present status of materials and technologies for carbon capture Covers materials synthesis, gas separations, membrane fabrication, and CO2 removal to highlight recent progress in the materials and chemistry aspects of carbon capture Allows the reader to better understand the challenges and opportunities in carbon capture Edited by leading experts working on materials and membranes for carbon separation and capture Materials for Carbon Capture is an excellent book for advanced students of chemistry, materials science, chemical and energy engineering, and early career scientists who are interested in carbon capture. It will also be of great benefit to researchers in academia, national labs, research institutes, and industry working in the field of gas separations and carbon capture.
Download or read book New Sterically Hindered Polyvinylamine containing Membranes and 13C NMR Study of Amino Acid Salts for Carbon Capture from Flue Gas written by Ting-Yu Chen and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Membrane processes offer several advantages that make them ideal for industrial gas separation applications, including modularity, versatility, and cost-effectiveness. Facilitated transport membranes (FTMs) have seen significant developments recently and provide an improved technology platform for post-combustion CO2 capture. In this research, two types of amine carriers incorporated in FTMs were investigated for carbon capture from flue gas. In the first section of this study, we developed an improved method to synthesize sterically hindered polyvinylamine, which was successfully used as a fixed-site carrier for the synthesis of thin-film FTMs. The use of sterically hindered polyamines has been shown to significantly improve the ability of membranes to transport CO2. Moderately hindered poly-N-methyl-N-vinylamine (PVAm-CH3) with a high molecular weight was synthesized through stepwise reductive amination. A fluorinated alcohol with high polarity was used in the synthesis to shift the equilibrium to the formation of the imine intermediate for higher N-methylation. The method of preventing over-alkylation resulted in an increased yield of the target product and prevented the formation of side products. PVAm-CH3 exhibited excellent CO2 facilitation with a CO2 permeability of 445.7 Barrer (1 Barrer = 3.349 x 10–16 mol m m–2 s–1 Pa–1) and a CO2/N2 selectivity of 70.3. The optimized PVAm-CH3 membrane containing incorporating the amino acid salt (AAS), 2-(1-piperazinyl)ethylamine sarcosinate (PZEA-Sar) exhibited a superior CO2 performance of 1071 GPU (1 GPU = 3.349 x 10–10 mol m–2 s–1 Pa–1) and a CO2/N2 selectivity of 183 at 57°C and a feed gas pressure of 111.64 kPa (1.5 psig). Density functional theory (DFT) calculations were performed to explain the enhanced performance of PVAm-CH3 membranes. Some AASs have been demonstrated to be effective mobile carriers in FTMs to achieve superior CO2 permeance and CO2/N2 selectivity for CO2 capture from flue gas. A deeper understanding of how the structures of different AASs affect the chemistry of the amine–CO2 reaction is essential for the future development of more efficient AAS mobile carriers. In the second part of this study, we used NMR spectroscopy to study the amine–CO2 reaction chemistry and the CO2 absorption properties of AASs. PZEA-Sar exhibited a higher CO2 loading and preference for the more efficient bicarbonate pathway as well as formed a uniform membrane, making it a more preferred mobile carrier. The positive correlation between the CO2 loading of AAS (mol CO2/g AAS) and the CO2 permeance of FTMs suggested that AAS with a higher CO2 loading may improve the performance of FTMs. The diffusion of carbamate products played the most important role in CO2 transport under low CO2 partial pressure. As the partial pressure of CO2 increased, the contribution from bicarbonate products became more significant. The lower CO2 absorption at a higher temperature suggests that the enhanced CO2 permeance in FTMs was promoted by the increased diffusion rate of amine–CO2 reaction products.
Download or read book Membrane Technologies and Applications written by Kaustubha Mohanty and published by CRC Press. This book was released on 2011-12-19 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: Membrane technologies play an increasingly important role in unit operations for resource recovery, pollution prevention, and energy production, as well as environmental monitoring and quality control. They are also key component technologies of fuel cells and bioseparation applications. Membrane Technologies and Applications provides essential data and background information on various dimensions of membrane technologies, with a major focus on their practical application. Membranes of inorganic materials offer cost-effective solutions for simple to complex separation problems. This book is designed for anyone interested in water and wastewater treatment, membrane suppliers, as well as students and academics studying the field.
Download or read book Emerging Carbon Capture Technologies written by Mohammad Khalid and published by Elsevier. This book was released on 2022-04-22 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon dioxide (CO2) capture and conversion to value added products, such as chemicals, polymers, and carbon-based fuels represents a promising approach to transform a potential threat to the environment into a value-added product for long term sustainability. Emerging Carbon Capture Technologies: Towards a Sustainable Future provides a multidisciplinary view of the research that is being carried out in this field, covering materials and processes for CO2 capture and utilization and including a broad discussion of the impact of novel technologies in carbon capture on the energy landscape, society and climate. Of interest to students, researchers and professionals in industries related to greenhouse gas mitigation, post-combustion CO2 capture processes, coal-fired power plants, environmental sustainability, green solvents, green technologies, and the utilization of clean energy for environmental protection, this book covers both the experimental and theoretical aspects of novel materials and process development providing a holistic approach toward a sustainable energy future. Includes a wide range of processes and their applications Covers the experimental and theoretical aspects of novel materials and process development Includes techno-economics analysis, regulation, policies and future prospects
Download or read book Handbook of Membrane Separations written by Anil K. Pabby and published by CRC Press. This book was released on 2023-12-22 with total page 1334 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third edition of the Handbook of Membrane Separations: Chemical, Pharmaceutical, Food, and Biotechnological Applications provides a comprehensive discussion of membrane applications. Fully updated to include the latest advancements in membrane science and technology, it is a one-of-its-kind overview of the existing literature. This fully illustrated handbook is written by experts and professionals in membrane applications from around the world. Key Features: • Includes entirely new chapters on organic solvent-resistant nanofiltration, membrane condensers, membrane-reactors in hydrogen production, membrane materials for haemodialysis, and integrated membrane distillation • Covers the full spectrum of membrane technology and its advancements • Explores membrane applications in a range of fields, from biotechnological and food processing to industrial waste management and environmental engineering This book will appeal to both newcomers to membrane science as well as engineers and scientists looking to expand their knowledge on upcoming advancements in the field.
Download or read book Advanced CO2 Capture Technologies written by Shin-ichi Nakao and published by Springer. This book was released on 2019-05-07 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarises the advanced CO2 capture technologies that can be used to reduce greenhouse gas emissions, especially those from large-scale sources, such as power-generation and steel-making plants. Focusing on the fundamental chemistry and chemical processes, as well as advanced technologies, including absorption and adsorption, it also discusses other aspects of the major CO2 capture methods: membrane separation; the basic chemistry and process for CO2 capture; the development of materials and processes; and practical applications, based on the authors’ R&D experience. This book serves as a valuable reference resource for researchers, teachers and students interested in CO2 problems, providing essential information on how to capture CO2 from various types of gases efficiently. It is also of interest to practitioners and academics, as it discusses the performance of the latest technologies applied in large-scale emission sources.
Download or read book Production of Hydrogen from Renewable Resources written by Zhen Fang and published by Springer. This book was released on 2015-11-06 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides state-of-the-art reviews, current research and prospects of producing hydrogen using bio, thermal and electrochemical methods and covers hydrogen separation, storage and applications. Hydrogen produced from biomass offers a clean and renewable energy source and a promising energy carrier that will supplement or replace fossil fuels in the future. The book is intended as a reference work for researchers, academics and industrialists working in the chemical and biological sciences, engineering, renewable resources and sustainability. Readers will find a wealth of information in the text that is both useful for the practical development of hydrogen systems and essential for assessing hydrogen production by bioelectrochemical, electrochemical, fermentation, gasification, pyrolysis and solar means, applied to many forms of biomass. Dr. Zhen Fang is Professor in Bioenergy, Leader and founder of biomass group, Chinese Academy of Sciences, Xishuangbanna Tropical Botanical Garden and is also adjunct Professor of Life Sciences, University of Science and Technology of China. Dr. Richard L Smith, Jr. is Professor of Chemical Engineering, Graduate School of Environmental Studies, Research Center of Supercritical Fluid Technology, Tohoku University, Japan. Dr. Xinhua Qi is Professor of Environmental Science, Nankai University, China.
Download or read book CO2 philic Polymers Nanocomposites and Solvents written by Ashok Kumar Nadda and published by Elsevier. This book was released on 2023-02-21 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: CO2-philic Polymers, Nanocomposites and Chemical Solvents: Capture, Conversion and Industrial Products is a multidisciplinary book that provides a compilation of concrete information on various polymers, porous materials hydrogels, membranes, nanoparticles, biochar metal-organic frameworks, bioinspired surfaces, polysaccharides, organic solvents, chemicals, eutectic solvents, amine-based chemical compounds, porphyrins, ionic liquids, ceramics and cutting-edge technologies for CO2 sequestration and conversion. Each chapter covers the latest developments and methods of synthesis and applications in the area. The book discusses, in detail, valuable commercial products from CO2, such as ethanol, methanol, formic acid, and precursors of other fine chemicals. The book covers the scientific, technological and practical concepts concerning the research, development and realization of CO2-philic polymers, nanocomposites and chemical solvents. This makes it a valuable resource for academic researchers and graduate students in chemical engineering, materials science and chemical engineers/engineers working in the industry. - Provides a comprehensive overview of candidates and techniques for CO2 capture and conversion - Written by worldwide experts from academia - Contains numerous illustrations, tables, figures, graphs, bibliographies and extensive references - Appeals to a broad academic audience with its interdisciplinary content
Download or read book Advances in Synthesis Gas Methods Technologies and Applications written by Mohammad Reza Rahimpour and published by Elsevier. This book was released on 2022-10-22 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Synthesis Gas: Methods, Technologies and Applications: Syngas Purification and Separation considers different common and novel processes for the purification of produced syngas, such as absorption, adsorption, membrane, cryogenic distillation and particulate separation technologies in addition to thermal and oxidative processes for tar removal. The role of various catalysts or materials in absorption, adsorption and membrane processes are discussed in separate chapters to address each in more detail. - Introduces various adsorption and absorption techniques for purifying syngas - Describes syngas purification by various membranes - Discusses novel technologies for syngas purification
Download or read book Women in Science Chemistry written by Jennifer L. Schaefer and published by Frontiers Media SA. This book was released on 2022-02-08 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Review of Carbon Dioxide Selective Membranes written by Henry W. Pennline and published by . This book was released on 2003 with total page 1040 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon dioxide selective membranes provide a viable energy-saving alternative for CO2 separation, since membranes do not require any phase transformation. This review examines various CO2 selective membranes for the separation of CO2 and N2, CO2 and CH4, and CO2 and H2 from flue or fuel gas. This review attempts to summarize recent significant advances reported in the literature about various CO2 selective membranes, their stability, the effect of different parameters on the performance of the membrane, the structure and permeation properties relationships, and the transport mechanism applied in different CO2 selective membranes.
Download or read book Advances in Sustainable Polymers written by Vimal Katiyar and published by Springer Nature. This book was released on 2019-11-05 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a systematic overview of the processing and applications of sustainable polymers. The volume covers recent advances in biomedical, food packaging, fuel cell, membrane, and other emerging applications. The book begins by addressing different sections of biomedical application including use of carbohydrate-based therapeutics, nanohybrids, nanohydrogels, bioresorbable polymers and their composites, polymer-grafted nanobiomaterials for biomedical devices and implants, nanofibres, and others. The second part of this book discusses various processing and packaging materials for food packaging applications. The last section discusses other emerging applications, including using microbial fuel cells for waste water treatment, microfluidic fuel cells for low power applications, among others. This volume will be relevant to researchers working to improve the properties of bio-based materials for their advanced application and wide commercialization.
Download or read book Carbon Dioxide Chemistry written by J P Pradier and published by Elsevier. This book was released on 2014-03-14 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book derives from a workshop held in Sweden to examine the environmental implications of the dramatic increase in carbon dioxide levels in the atmosphere in the last 50 years and to find ways of mitigating greenhouse gas emissions. This multi-disciplinary approach makes it essential reading not only for chemists but for all engineers, biologists and environmentalists concerned with this crucially important issue.
Download or read book Membrane Handbook written by Winston Ho and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 957 pages. Available in PDF, EPUB and Kindle. Book excerpt: Membrane processes have wide industrial ap This handbook reviews the published litera plications covering many existing and emerging ture, presents an in-depth description of com uses in the chemical, petrochemical, petroleum, mercialized membrane processes, and gives a state-of-the-art review of new membrane pro environmental, water treatment, pharmaceutic al, medical, food, dairy, beverage, paper, tex cess concepts under development. It is intended tile, and electronic industries. The existing ap to be a single source of underlying principles, membranes, membrane modules, process de plications include: (1) dialysis for the purifica tion of human blood (the artificial kidney), (2) sign, applications, and cost estimates. It is also electrodialysis for the desalination of brackish a first attempt to bridge the gap between the water to produce potable water, (3) reverse theory and practice. osmosis for the desalination of seawater, (4) There are several groups which may benefit ultrafiltration for the concentration of large pro from this handbook. It can be used as educa tein molecules from cheese, casein whey, and tional material for industrial personnel engaged milk, and (5) microfiltration for the sterilization in membrane separations. For scientists and of pharmaceutical and medical products, beer, engineers active in research and development in wine, and soft drinks. Since membrane pro synthetic membranes, it will serve as a single cesses generally have low capital investment, as source of reference for the entire field.
