Download or read book Numerical Modelling of Anaerobic Digestion Processes in Agricultural Biogas Plants written by Michael Schön and published by BoD – Books on Demand. This book was released on 2010 with total page 162 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 Small Bioreactors for Management of Biodegradable Waste written by Pranas Baltrėnas and published by Springer. This book was released on 2018-06-01 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume discusses how small bioreactors can produce useful biogas and compost from biodegradable waste. The authors identify which biodegradable wastes are optimal for small bioreactors, and how these choices can be used to increase bioreactor productivity. Additionally, readers will learn about how the amount and composition of biogas is estimated, the concentration of biodegradable waste that needs to be supplied to a bioreactor, the development of small bioreactors including the ratio of cost to the obtained benefits, and the nature of biodegradable wastes generated by both small farms and large food industry enterprises. The beginning chapters explain what biodegradable waste is, show how to predict how much waste an enterprise will produce, and elaborate the characteristics of the biogas which is generated from biodegradable waste in small bioreactors. Then the book discusses the types of small bioreactors and how to select the optimal bioreactor for a given case. Bioreactor performance is analyzed on both an economical and production efficiency basis, with experimental results provided on the quantity and quality of the biogas produced. The final chapters address how small bioreactors can be incorporated into small biogas plants, and the potential use of small bioreactors in countries with high demand for alternative energy using the case of Lithuania. The audience for this work includes specialists in biodegradable waste management and utilization enterprises, designers, and academics, researchers and students engaged in environmental engineering.

Download or read book Biogas Science and Technology written by Georg Gübitz and published by Springer. This book was released on 2015-09-03 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Michael Lebuhn, Stefan Weiß, Bernhard Munk, Georg M. Guebitz Microbiology and Molecular Biology Tools for Biogas Process Analysis, Diagnosis and Control Veronika Dollhofer, Sabine Marie Podmirseg, Tony Martin Callaghan, Gareth Wyn Griffith & Katerina Fliegerová Anaerobic Fungi and their Potential for Biogas Production Bianca Fröschle, Monika Heiermann, Michael Lebuhn, Ute Messelhäusser, Matthias Plöchl Hygiene and Sanitation in Biogas Plants Charles-David Dubé and Serge R. Guiot Direct Interspecies Electron Transfer in Anaerobic Digestion: A Review Simon K.-M. R. Rittmann A Critical Assessment of Microbiological Biogas to Biomethane Upgrading Systems Manfred Lübken, Pascal Kosse, Konrad Koch, Tito Gehring, Marc Wichern Influent Fractionation for Modeling Continuous Anaerobic Digestion Processes Fermoso, F. G, van Hullebusch, E. D, Guibaud, G, Collins, G, Svensson, B. H, Carliell-Marquet, C, Vink, J.P.M, Esposito, G, Frunzo, L Fate of Trace Metals in Anaerobic Digestion

Download or read book Bioenergy Principles and Technologies written by Zhenhong Yuan and published by Walter de Gruyter GmbH & Co KG. This book was released on 2017-12-18 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second part of Bioenergy: Principles and Technologies continues the discussion of biomass energy technologies covering fuel ethanol production, pyrolysis, biomass-based hydrogen production and fuel synthesis, biodiesel, municipal solid water treatment and microbial fuel cells. With a combination of theories, experiments and case studies, it is an essential reference for bioenergy researchers, industrial chemists and chemical engineers.

Download or read book Biogas Technology written by Liangwei Deng and published by Springer Nature. This book was released on 2020-05-28 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on agricultural waste treatment and renewable energy production from the perspective of anaerobic digestion. It covers topics on anaerobic digestion processes and practices in various types of biogas plant construction and management and systematically addresses the principle and main features of three kinds of anaerobic digestion systems: household digesters, biogas septic tanks, and biogas plants. Instructive, informative and easy to understand, the book offers a valuable asset for researchers, technicians, graduate students and managerial personnel working in the areas of renewable energy, agricultural ecological engineering and the treatment and utilization of agricultural wastes.

Download or read book Monitoring the Anaerobic Digestion Process written by Harry Michael Falk and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the anaerobic digestion process, microorganisms produce methane and carbon dioxide from organic substrates, either organic waste or renewable primary products. Being a versatile biofuel, biogas can be combusted in a combined heat and power plant to produce electricity and heat or, after purification, fed directly into the natural gas grid as biomethane. Due to the Renewable Energy Sources Act introduced in 1991 in Germany, this process became economically advantageous and led to a boom of biogas plants being built in Germany. A major problem of operating a biogas plant is to monitor an unstable process over time. Parameters like pH or redox potential do not necessarily suffice to estimate the degree of fermentation. At present, the preferred indication parameter are the concentrations of process intermediates, particularly short chain volatile fatty acids. They can be quantified with different gas or liquid chromatographic methods, which requires in-depth knowledge and expensive hardware and is usually carried out by specialized laboratories. Periodically, the digestate is sampled and sent in for analysis. Knowing the absolute concentrations of the different volatile fatty acids can only give a hint about the current fermentation status, though what would be more meaningful would be elucidating the dynamics of generation and degradation of the respective short chain volatile fatty acids. A new online technique using attenuated total-reflectance Fourier-transformed infrared spectroscopy (ATR-MIR-FTIR) was developed, which allows an online monitoring of the concentrations of the different volatile fatty acids in situ. This can give an insight into the dynamics of the anaerobic digestion process. It was adapted to a laboratory scale one-stage biogas plant fed with typically renewable primary products to simulate an agricultural biogas plant. Chemometric models were developed using spiked samples and samples from a real fermentation for acetic, propionic, iso-butyric, butyric, iso-valeric and valeric acid. The methods were evaluated by monitoring the startup phase of the anaerobic digestion of ground wheat in a 10 l continuous-stirred tank reactor. Sample preparation, recording and analysis of IR-spectra of digestate were fully automated. Predictions of the absolute concentration for acetic and propionic acid were reasonable, the existence of other volatile fatty acids could be detected. The developed anaerobic sensor system is able to determine their concentration dynamics and can thereby help to utilize unused potential in biogas plants. Another ascending problem are the substrates being used for the production of biogas. Renewable primary products are in direct rivalry with the agricultural and food industry. For a sustainable future, other biomass sources have to be made accessible for energy production. In contrast to energy crops, especially waste products can be used for energy generation without any concerns. The biogas potential of potential substrates is estimated with parallel running batch experiments. In the process, the minor gas flow rate of these lab-scale fermentations has to be monitored closely and accurately. Especially for this purpose, an easy to build and maintain automated biogas meter was developed to measure the biogas flow in anaerobic digestion experiments. The flow meter is built upon the open-source Arduino platform, and can therefore be easily enhanced or adapted to other environments. Recordings are sent via ethernet to a MySQL database, making the data widely accessible. By combining nine fermenters into an array, triplicate batch experiments according to VDI 4630 with negative control, positive control and the test substrate are monitored effortlessly. Concluding, this thesis focuses on optimizing the biogas production with the development of novel measurement instrumentation. The already well-established process of industrial digestion of energy crops is made transparent with an advanced online measurement method for the volatile fatty acids. Methane potential of novel biodegradable substrates can be monitored with the affordable low-cost gasUino biogas meter.

Download or read book Current Advances in Anaerobic Digestion Technology written by Marcell Nikolausz and published by MDPI. This book was released on 2021-03-17 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anaerobic digestion (AD) is one of the oldest biotechnological processes and originally referred to biomass degradation under anoxic conditions in both natural and engineered systems. It has been used for decades to treat various waste streams and to produce methane-rich biogas as an important energy carrier, and it has become a major player in electrical power production. AD is a popular, mature technology, and our knowledge about the influencing process parameters as well as about the diverse microbial communities involved in the process has increased dramatically over the last few decades. To avoid competition with food and feed production, the AD feedstock spectrum has constantly been extended to waste products either rich in recalcitrant lignocellulose or containing inhibitory substances such as ammonia, which requires application of various pre-treatments or specific management of the microbial resources. Extending the definition of AD, it can also convert gases rich in hydrogen and carbon dioxide into methane that can substitute natural gas, which opens new opportunities by a direct link to traditional petrochemistry. Furthermore, AD can be coupled with emerging biotechnological applications, such as microbial electrochemical technologies or the production of medium-chain fatty acids by anaerobic fermentation. Ultimately, because of the wide range of applications, AD is still a very vital field in science. This Special Issue highlights some key topics of this research field.

Download or read book Biogas Processes for Sustainable Development written by Uri Marchaim and published by Food & Agriculture Org.. This book was released on 1992 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intended to assist engineers, government officials and funding agencies to meet present and future challenges and make decisions on the promotion of anaerobic digestion as an alternative source of energy.

Download or read book Anaerobic Digestion written by Rajesh Banu and published by BoD – Books on Demand. This book was released on 2019-09-04 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in technology to recover bioenergy from various feedstocks make them suitable alternatives to fossil fuel. This book contains several scientific discussions regarding microbes involved in biogas production, the anaerobic digestion process, their operation, and application for sustainable development. The book provides in-depth information about anaerobic digestion for researchers and graduate students. The editor sincerely thanks all the contributors, whose efforts have brought this book to fruition.

Download or read book Reactor and Process Design in Sustainable Energy Technology written by Fan Shi and published by Elsevier. This book was released on 2014-07-28 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reactor Process Design in Sustainable Energy Technology compiles and explains current developments in reactor and process design in sustainable energy technologies, including optimization and scale-up methodologies and numerical methods. Sustainable energy technologies that require more efficient means of converting and utilizing energy can help provide for burgeoning global energy demand while reducing anthropogenic carbon dioxide emissions associated with energy production. The book, contributed by an international team of academic and industry experts in the field, brings numerous reactor design cases to readers based on their valuable experience from lab R&D scale to industry levels. It is the first to emphasize reactor engineering in sustainable energy technology discussing design. It provides comprehensive tools and information to help engineers and energy professionals learn, design, and specify chemical reactors and processes confidently. Emphasis on reactor engineering in sustainable energy technology Up-to-date overview of the latest reaction engineering techniques in sustainable energy topics Expert accounts of reactor types, processing, and optimization Figures and tables designed to comprehensively present concepts and proceduresHundreds of citations drawing on many most recent and previously published works on the subject

Download or read book The Microbiology of Anaerobic Digesters written by Michael H. Gerardi and published by John Wiley & Sons. This book was released on 2003-09-19 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anaerobic digestion is a biochemical degradation process that converts complex organic material, such as animal manure, into methane and other byproducts. Part of the author's Wastewater Microbiology series, Microbiology of Anareboic Digesters eschews technical jargon to deliver a practical, how-to guide for wastewater plant operators.

Download or read book Biomethanation I written by Birgitte K. Ahring and published by Springer Science & Business Media. This book was released on 2003-04-07 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anaerobic digestion is a major field for the treatment of waste and wastewater. Lately the focus has been on the quality of the effluent setting new demands for pathogen removal and for successful removal of unwanted chemicals during the anaerobic process. The two volumes on Biomethanation are devoted to presenting the state of art within the science and application of anaerobic digestion. They describe the basic microbiolgical knowledge of importance for understanding the processes of anaerobic bioreactors along with the newest molecular techniques for examining these systems. In addition, the applications for treatment of waste and wastewaters are presented along with the latest knowledge on process control and regulation of anaerobic bioprocesses. Together these two volumes give an overview of a growing area, which previously has never been presented in such a comprehensive way.

Download or read book Energy Research Abstracts written by and published by . This book was released on 1993-08 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biogas from Waste and Renewable Resources written by Dieter Deublein and published by John Wiley & Sons. This book was released on 2008-04-18 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written as a practical introduction to biogas plant design and operation, this book fills a huge gap by presenting a systematic guide to this emerging technology -- information otherwise only available in poorly intelligible reports by US governmental and other official agencies. The author draws on teaching material from a university course as well as a wide variety of industrial biogas projects he has been involved with, thus combining didactical skill with real-life examples. Alongside biological and technical aspects of biogas generation, this timely work also looks at safety and legal aspects as well as environmental considerations.

Download or read book Modelling and Simulation of Biogas Systems Economics written by Shahid A Abbasi and published by APH Publishing. This book was released on 1993 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Biogas Handbook written by Arthur Wellinger and published by Elsevier. This book was released on 2013-02-19 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: With increasing pressures to utilize wastes effectively and sustainably, biogas production represents one of the most important routes towards reaching renewable energy targets. This comprehensive reference on the development and deployment of biogas supply chains and technology reviews the role of biogas in the energy mix and outlines the range of biomass and waste resources for biogas production. Contributors provide detailed coverage of anaerobic digestion for the production of biogas and review the utilization of biogas for various applications. They consider all aspects in the biogas production chain from the origin of the biomass feedstocks, feedstock selection and preparation, the anaerobic digestion process, biogas plant equipment design and operation, through to utilization of the biogas for energy production and the residue, the digestate, which can be used as a biofertilizer. The book also addresses biogas utilization, and explores environmental impacts and commercial market applications. Table of Contents: Biogas as an energy option: An overview Part 1 Biomass resources, feedstock treatment and biogas production: Biomass resources for biogas production; Analysis and characterisation of biogas feedstocks; Storage and pre-treatment of substrates for biogas production; Fundamental science and engineering of the anaerobic digestion process for biogas production; Optimisation of biogas yields from anaerobic digestion by feedstock type; Anaerobic digestion as a key technology for biomass valorisation: Roles and contribution to the energy balance of biofuel chains Part 2 Plant design, engineering, process optimisation and digestate utilization: Design and engineering of biogas plants; Energy flows in biogas plants: Analysis and implications for plant design; Process control in biogas plants; Methane emissions in biogas production; Biogas digestate quality and utilization; Land application of digestate Part 3 Biogas utilisation: international experience and best practice: Biogas cleaning; Biogas up-grading to biomethane; Biomethane injection into natural gas networks; Generation of heat and power from biogas for stationery applications: Boilers, gas engines and turbines, combined heat and power (CHP) plants and fuel cells; Biomethane for transport applications; Market development and certification schemes for biomethane