Download or read book Modeling of a Landfill gas Purification Process written by Mark H. Headinger and published by . This book was released on 1986 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling Gas Production in Managed Sanitary Landfills written by Stanford University. Department of Civil Engineering and published by . This book was released on 1985 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling Landfill Gas Production and Movement written by Warren Michael Stallard and published by . This book was released on 1991 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book From Landfill Gas to Energy written by Vasudevan Rajaram and published by CRC Press. This book was released on 2011-12-15 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Converting old landfills to energy producing sites, while capturing emitted greenhouse gases, has faced numerous technical, financial and social challenges and developments lately. Also, the re-mining of landfills to recover useful land in dense urban areas and proper landfill closure has been a subject of discussion and investigation. Designed as an overview text for landfill management from cradle to grave, this volume’s content stretches from the fundamentals to the rather indepth details. By putting down their joint international experience, the authors have intended to both guide and inspire the user for his or her landfill project. Introducing the fundamental concepts of landfill gas management and its needs and importance in the present world energy scenario, this accessible reference volume presents key landfill gas management techniques at regional, national and global levels. In detail, it gives an account of the recent technologies available for landfill gas treatment and its utilization. It summarizes landfill gas prediction models developed in various parts of the world and details their adequacy in various field conditions. Covering both landfill remediation aspects and economic considerations while selecting a landfill gas to energy utilization project, the reader gets familiar with the practical aspects of converting a landfill site. Also, the challenges faced by municipalities and landfill operators in recovering landfill gas as an energy source are described, and solutions are suggested for solving them effectively. These include practical execution problems, governmental issues, and developing policies to encourage investment. The volume also includes various case studies of landfill gas-to-energy utilization projects from around the world, which can be reviewed and customized for the reader’s own application with the help of extensive reference section. Intended as an overview text for advanced students and researchers in the relevant engineering and technology fields (Environmental, Civil, Geotechnical, Chemical, Mechanical and Electrical), this book will also be particularly helpful to practitioners such as municipal managers, landfill operators, designers, solid waste management engineers, urban planners, professional consultants, scientists, non-governmental organizations and entrepreneurs.
Download or read book Solid Waste Landfilling written by Raffaello Cossu and published by Elsevier. This book was released on 2018-11-29 with total page 1192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solid Waste Landfilling: Concepts, Processes, Technology provides information on technologies that promote stabilization and minimize environmental impacts in landfills. As the main challenges in waste management are the reduction and proper treatment of waste and the appropriate use of waste streams, the book satisfies the needs of a modern landfill, covering waste pre-treatment, in situ treatment, long-term behavior, closure, aftercare, environmental impact and sustainability. It is written for practitioners who need specific information on landfill construction and operation, but is also ideal for those concerned about the possible return of these sites to landscapes and their subsequent uses for future generations. - Includes input by international contributors from a vast number of disciplines - Provides worldwide approaches and technologies - Showcases the interdisciplinary nature of the topic - Focuses on sustainability, covering the lifecycle of landfills under the concept of minimizing environmental impact - Presents knowledge of the legal framework and economic aspects of landfilling
Download or read book Landfill Gas Generation Modeling Manual of Practice written by Jeffery Pierce and published by . This book was released on 2005 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy from Biomass written by and published by . This book was released on 1987 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Altamont Landfill Gas Purification Testing and Monitoring written by Ted Barnes and published by . This book was released on 2013 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book User s manual landfill gas emissions model version 2 0 written by and published by DIANE Publishing. This book was released on with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Simulation of the combustion process of sanitary landfill gas written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A utilização do biogás, proveniente de aterros sanitários, para a produção deenergia elétrica mostra que os problemas ambientais conseqüentes dos resíduossólidos podem ser revertidos em benefícios ambientais e econômicos. Este projetoapresenta resultados sobre a composição dos resíduos sólidos em aterros sanitáriose investiga sua utilização como fonte de energia através do seu processo decombustão. Foi estudado um modelo baseado na formulação de volumes finitos, atravésda utilização do código comercial Fluent (versão 6.2), que inclui o modelo K-E deturbulência, o modelo generalizado de taxas finitas de Arrhenius e Magnunssenpara o cálculo das reações químicas e o modelo de radiação por transferênciadiscreta, para simular o processo de combustão em fornalhas industriais. Oobjetivo deste estudo é investigar a aplicação do modelo na simulação do processode combustão do biogás, avaliar a possibilidade de uso do biogás como fonte deenergia e prever a formação de poluentes, tais como NO, CO e SO2. Na simulação do processo de combustão foram utilizados modelos de umaúnica reação global (1 etapa) para a oxidação dos hidrocarbonetos e modelos deduas reações (2 etapas). Para a previsão da formação de NO investigou-se osmecanismos thermal NO, prompt NO, e fuel NO. Os resultados indicaram que omecanismo fuel NO foi o mecanismo dominante no processo de formação do NO. Os resultados encontrados indicam a possível aplicação do modelo nainvestigação do processo de combustão do biogás. De acordo com os níveis detemperatura e de fluxo encontrados avalia-se que o biogás pode ser umaalternativa importante como fonte de energia. Estudos experimentais, contudo, sãonecessários para um melhor aproveitamento do biogás.
Download or read book Integrated Design and Simulation of Chemical Processes written by Alexandre C. Dimian and published by Elsevier. This book was released on 2003-05-13 with total page 715 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title aims to teach how to invent optimal and sustainable chemical processes by making use of systematic conceptual methods and computer simulation techniques. The material covers five sections: process simulation; thermodynamic methods; process synthesis; process integration; and design project including case studies. It is primarily intended as a teaching support for undergraduate and postgraduate students following various process design courses and projects, but will also be of great value to professional engineers interested in the newest design methods.Provides an introduction to the newest design methods.Of great value to undergraduate and postgraduate students as well as professional engineers.Numerous examples illustrate theoretical priciples and design issues.
Download or read book Improving Characterization of Anthropogenic Methane Emissions in the United States written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2018-08-25 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding, quantifying, and tracking atmospheric methane and emissions is essential for addressing concerns and informing decisions that affect the climate, economy, and human health and safety. Atmospheric methane is a potent greenhouse gas (GHG) that contributes to global warming. While carbon dioxide is by far the dominant cause of the rise in global average temperatures, methane also plays a significant role because it absorbs more energy per unit mass than carbon dioxide does, giving it a disproportionately large effect on global radiative forcing. In addition to contributing to climate change, methane also affects human health as a precursor to ozone pollution in the lower atmosphere. Improving Characterization of Anthropogenic Methane Emissions in the United States summarizes the current state of understanding of methane emissions sources and the measurement approaches and evaluates opportunities for methodological and inventory development improvements. This report will inform future research agendas of various U.S. agencies, including NOAA, the EPA, the DOE, NASA, the U.S. Department of Agriculture (USDA), and the National Science Foundation (NSF).
Download or read book Design and Verification of a Landfill Gas Extraction Model Employing Bioreactor Enhancement Methods written by James W. Baier and published by . This book was released on 1997 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modelling of Landfill Gas Potentials written by Bart Van Zanten and published by . This book was released on 1996* with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Landfill Gas Purification with an Absorption Process Using Methanol as Absorbent written by Bernhard Graeber and published by . This book was released on 1995 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Anaerobic Digestion Model No 1 ADM1 written by IWA Task Group for Mathematical Modelling of Anaerobic Digestion Processes and published by IWA Publishing. This book was released on 2002-02-01 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: The IWA Task Group for Mathematical Modelling of Anaerobic Digestion Processes was created with the aim to produce a generic model and common platform for dynamic simulations of a variety of anaerobic processes. This book presents the outcome of this undertaking and is the result of four years collaborative work by a number of international experts from various fields of anaerobic process technology. The purpose of this approach is to provide a unified basis for anaerobic digestion modelling. It is hoped this will promote increased application of modelling and simulation as a tool for research, design, operation and optimisation of anaerobic processes worldwide. This model was developed on the basis of the extensive but often disparate work in modelling and simulation of anaerobic digestion systems over the last twenty years. In developing ADM1, the Task Group have tried to establish common nomenclature, units and model structure, consistent with existing anaerobic modelling literature and the popular activated sludge models (See Activated Sludge Models ASM1, ASM2, ASM2d and ASM3, IWA Publishing, 2000, ISBN: 1900222248). As such, it is intended to promote widespread application of simulation from domestic (wastewater and sludge) treatment systems to specialised industrial applications. Outputs from the model include common process variables such gas flow and composition, pH, separate organic acids, and ammonium. The structure has been devised to encourage specific extensions or modifications where required, but still maintain a common platform. During development the model has been successfully tested on a range of systems from full-scale waste sludge digestion to laboratory-scale thermophilic high-rate UASB reactors. The model structure is presented in a readily applicable matrix format for implementation in many available differential equation solvers. It is expected that the model will be available as part of commercial wastewater simulation packages. ADM1 will be a valuable information source for practising engineers working in water treatment (both domestic and industrial) as well as academic researchers and students in Environmental Engineering and Science, Civil and Sanitary Engineering, Biotechnology, and Chemical and Process Engineering departments. Contents Introduction Nomenclature, State Variables and Expressions Biochemical Processes Physicochemical Processes Model Implementation in a Single Stage CSTR Suggested Biochemical Parameter Values, Sensitivity and Estimation Conclusions References Appendix A: Review of Parameters Appendix B: Supplementary Matrix Information Appendix C: Integration with the ASM Appendix D: Estimating Stoichiometric Coefficients for Fermentation Scientific & Technical Report No.13
Download or read book Development of Methods to Improve Capture of Greenhouse Gases from Bioreactor Landfills written by Yoojin Jung and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Landfill methane (CH 4) is a potent greenhouse gas contributing to global climate change, and therefore, it should be captured to reduce emissions of greenhouse gases. Collected CH 4 can also be used as an alternative energy source. To control landfill gas (LFG) emissions, gas collection systems of various designs have been used. However, the efficiency of LFG recovery systems can be problematic, particularly before installation of final landfill covers. In addition, despite the widespread use of LFG collection systems for over two decades, little information about their capture efficiency is available because LFG generation rates usually remain unknown. Therefore, in order to enhance the efficiency of CH 4 capture and reduce fugitive emissions, it is critical to improve the design of LFG collection systems, properly determine LFG production rates, and quantify gas flow patterns within landfills. This is particularly important for landfills that are actively operated as bioreactors, since LFG production rates are typically higher due to rapid degradation of organic waste, or landfills with intermediate covers in which gas transport between the atmosphere and the landfill body readily occurs. This study explores methods that can improve operation of bioreactor landfills by reducing CH 4 emissions and enhancing CH 4 collection efficiency, and that can be used to estimate LFG generation rates and the distribution of gas flow parameters within waste. This work began with the analysis of an innovative gas collection system - a near-surface high permeability layer - for enhancing LFG capture and reducing fugitive CH 4 emissions. The high-permeability layer serves as a gas conductive layer uniformly distributing gas pressure, which extends the zone of influence of pumping wells. The gas collection system with a near-surface permeable layer was able to entrap LFG far from the well. The uniform pressure distribution above the permeable layer contributed to minimizing oxygen (O 2) intrusion into the landfill and maximizing CH 4 oxidation throughout the landfill soil cover, in addition to improving the CH 4 capture efficiency and reducing fugitive CH 4 emissions. More importantly, the presence of a permeable layer resulted in near constant collection rates of biogas regardless of variations in heterogeneous landfill conditions, such as waste permeability. The near-surface permeable layer also reduced preferential gas flows through cracks in the cover material, resulting in minimal impact of surface cracking on CH 4 emissions and O 2 intrusion. A second task was to investigate and advance the baro-pneumatic method, which is used to quantify CH 4 generation rates and estimate the gas permeability field. The baro-pneumatic method was modified by incorporating an inverse modeling approach, the pilot point method, to improve the efficacy of the method in landfills with heterogeneous gas permeabilities. Based on synthetic exercises, the inverse model reproduced the spatial permeability distribution reasonably well using transient pressure changes in response to the withdrawal of LFG during pumping tests. The LFG production rate was also successfully estimated using data from baro-pneumatic tests. The LFG flow models were calibrated to the site-specific gas pressure data using the modified baro-pneumatic method. These models were able to provide excellent predictions of gas pressure distributions and flow patterns in heterogeneous landfills.
