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Author : Michael Schön
Publisher : BoD – Books on Demand
Page : 162 pages
File Size : 51,6 Mb
Release : 2010
Category : Electronic
ISBN : 9783902719614
Author : Pranas Baltrėnas,Edita Baltrėnaitė
Publisher : Springer
Page : 364 pages
File Size : 50,7 Mb
Release : 2018-06-01
Category : Science
ISBN : 9783319782119
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.
Author : IWA Task Group for Mathematical Modelling of Anaerobic Digestion Processes
Publisher : IWA Publishing
Page : 61 pages
File Size : 49,9 Mb
Release : 2002-02-01
Category : Science
ISBN : 9781900222785
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
Author : F. Cecchi,J. Mata-Alvarez,F. G. Pohland
Publisher : IWA Publishing (International Water Assoc)
Page : 324 pages
File Size : 47,7 Mb
Release : 1993-05-31
Category : Science
ISBN : UVA:X002239025
There is no description available for this title
Author : Fan Shi
Publisher : Elsevier
Page : 290 pages
File Size : 45,7 Mb
Release : 2014-07-28
Category : Technology & Engineering
ISBN : 9780444595782
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 procedures Hundreds of citations drawing on many most recent and previously published works on the subject
Author : Nicholas Korres,Padraig O'Kiely,John A.H. Benzie,Jonathan S. West
Publisher : Routledge
Page : 627 pages
File Size : 53,7 Mb
Release : 2013-08-29
Category : Technology & Engineering
ISBN : 9781136489631
Interest in anaerobic digestion (AD), the process of energy production through the production of biogas, has increased rapidly in recent years. Agricultural and other organic waste are important substrates that can be treated by AD. This book is one of the first to provide a broad introduction to anaerobic digestion and its potential to turn agricultural crops or crop residues, animal and other organic waste, into biomethane. The substrates used can include any non-woody materials, including grass and maize silage, seaweeds, municipal and industrial wastes. These are all systematically reviewed in terms of their suitability from a biological, technical and economic perspective. In the past the technical competence and high capital investment required for industrial-scale anaerobic digesters has limited their uptake, but the authors show that recent advances have made smaller-scale systems more viable through a greater understanding of optimising bacterial metabolism and productivity. Broader issues such as life cycle assessment and energy policies to promote AD are also discussed.
Author : Anonim
Publisher : Unknown
Page : 472 pages
File Size : 46,8 Mb
Release : 1993-08
Category : Power resources
ISBN : PSU:000052606199
Author : Uri Marchaim,Food and Agriculture Organization of the United Nations
Publisher : Food & Agriculture Org.
Page : 244 pages
File Size : 41,8 Mb
Release : 1992
Category : Business & Economics
ISBN : 9251031266
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.
Author : Georg Gübitz,Alexander Bauer,Guenther Bochmann,Andreas Gronauer,Stefan Weiss
Publisher : Springer
Page : 200 pages
File Size : 54,9 Mb
Release : 2015-09-03
Category : Science
ISBN : 9783319219936
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
Author : Sunil Kumar,Zengqiang Zhang,Mukesh Kumar Awasthi,Ronghua Li
Publisher : CRC Press
Page : 224 pages
File Size : 52,8 Mb
Release : 2019-02-13
Category : Science
ISBN : 9781351589079
Offering a comprehensive approach, this title covers fundamentals, technologies, and management of biological processing of solid waste. It discusses kinetic modeling and synergistic impact evolution during bioprocessing of solid waste, environmental impacts such as greenhouse gas emission from biological processing of solid waste, energy recovery from solid waste, and biodrying of solid waste. It also presents cases and challenges from different countries, successful business models, and economic analyses of various processing options. Aimed at researchers and industry professionals in solid and hazardous waste management, this title offers a wealth of knowledge to help readers understand this increasingly important area.
Author : Obada Yaghi
Publisher : GRIN Verlag
Page : 95 pages
File Size : 52,6 Mb
Release : 2019-04-17
Category : Technology & Engineering
ISBN : 9783668925748
Bachelor Thesis from the year 2016 in the subject Engineering - Mechanical Engineering, grade: 94%, German Jordanian University (hosted by Hamburg University of Technology), language: English, abstract: This research project enables further development and improvement of the mixing efficiency in an existing biogas plant, by utilizing CFD simulation as well as a newly developed flow sensor in addition to supportive laboratory tests. The flow was analyzed considering the following variables: The mixing time, the Dry Matter (DM) content, the positioning of the agitators and how it can be related to the amount of velocity dead-zones. The velocity measurements took place at the biogas plant of the company Ardestorfer Bioenergie GmbH in the district of Buxtehude. The current plant capacity is approximately 1.6 MWel using animals manure, energy crops as well as agricultural residuals. In order to be able to perform the CFD simulation, a complete 3D model had to be done of the examined fermenter and the mixing agitators. Moreover, the current setup including fluid properties, boundary and initial conditions had to be taken into consideration. Velocity measurements were used as a validation approach for the simulation results, furthermore to acquire an overview of the flow behavior over the investigated mixing period. Firstly, it was found that at higher DM content the flow seemed to be more stable, and the velocity values get quite higher at the examined points. Moreover, at higher DM content (9.35% compared with 8.8%) the velocity dead-zones seemed to be approximately 70% less. Secondly, another approach was considered to improve the mixing and to minimize the dead-zones by changing the position of the main agitator. The new scenario showed fewer dead-zones by approximately 65% according to the CFD model. Thirdly, at all scenarios and setups, the flow seemed to reach the maximum possible velocity, and rather motion distribution after 150-180 seconds. Showing no remarkable improvement after this period. The mentioned findings were concluded based on comparisons between different velocity measurements as well as CFD simulation results at different operating conditions and setups. Being able to offer proper recommendations for a better energy efficiency in terms of lower energy consumption and better mixing all over the fermenter.
Author : Lalit K. Khurana,Asit B. Acharya
Publisher : Allied Publishers
Page : 544 pages
File Size : 46,5 Mb
Release : 2022-08-12
Category : Business & Economics
ISBN : 9789390951062
Covid-19 outbreak has been the biggest health, social and economic emergency the world has ever faced since the Second World War. The pandemic has drastically changed, at least temporarily, the way society, businesses, and infrastructure systems operate. It has forced us to take a closer look at our woefully inadequate health infrastructure. It also led to the closure of educational institutions and turned formal learning into distance learning, posing a daunting challenge of demand for e-learning infrastructure. Social distancing policies (SDPs), encouraging people to stay home and limit gatherings, impacted wide range of services and industries. The telecommunications infrastructure, in particular, became a spotlight in view of its critical importance to keep businesses, governments, and societies connected and running in the period of economic and social disruption. The governments acknowledged a fact that “telecommunications, internet services, broadcasting, cable services, IT and IT-enabled services (ITeS)” are the essential services. Work from Home (WFH) seemed a positive experience, however with some adverse impact on the social, behavioural and physical factors. ICEIM 2022 is a humble contribution of SPM PDEU in terms of presenting a scholarly platform wherein abundance of ideas, answers, right questions, and complementing new learning’s are expected to emerge. The conference aims at discussing and deliberating various contemporary issues and challenge in the management of energy & infrastructure. The conference showcases seven tracks, five of which are Business & Technology, Finance, Human Resource, Marketing, and Project & Operations Management. Then in view of emerging scenario, two more tracks were added namely, Business Analytics and Data Science, Strategies & Entrepreneurship Management. We do expect to receive 80–90 research papers covering various tracks of the conference. We have so far got regular research papers, industry papers, Ph.D. research papers and students’ research articles. New research directions also constitute an agenda of a conference. This conference had three plenary sessions: a) Emerging Electrical Vehicle Ecosystem: Prospects and Impediments, b) Infrastructure Development in India: Policy Perspectives and Innovative Financing Initiatives, c) Energy Sector Management: Challenges and Strategies in Industry 4.0 era. All the plenary sessions of this conference have speakers mostly from the industry. We strongly believe that this International Conference will provide ample opportunities to all participants to disseminate new research ideas with industry professionals as well as the policy-makers. It is also believed that this International Conference will initiate new thought process towards the issues and challenges faced by the energy and infrastructure and will definitely add substantially to the existing domain of knowledge. We are pleased to present this proceeding of the International Conference to the academicians, researchers, industry practitioners and policy-makers who all have joined hands towards building the new knowledge development in the area of energy & infrastructure management.
Author : Marcell Nikolausz
Publisher : MDPI
Page : 230 pages
File Size : 55,9 Mb
Release : 2021-03-17
Category : Science
ISBN : 9783036502229
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.
Author : Gavin Collins,Eric D. van Hullebusch,Giovanni Esposito,Cynthia Carliell-Marquet,Fernando G. Fermoso
Publisher : Frontiers Media SA
Page : 152 pages
File Size : 44,9 Mb
Release : 2018-11-27
Category : Electronic
ISBN : 9782889456796
Anaerobic digestion (AD) is a naturally-occurring biological process in soils, sediments, ruminants, and several other anoxic environments, that cycles carbon and other nutrients, and converts organic matter into a methane-rich gas. As a biotechnology, AD is now well-established for the treatment of the organic fraction of various waste materials, including wastewaters, but is also increasingly applied for an expanding range of organic feedstocks suitable for biological conversion to biogas. AD applications are classified in various ways, including on the basis of bioreactor design; and operating parameters, such as retention time, temperature, pH, total solids (TS) and volatile solids (VS) contents, and biodegradability of substrates. AD is an attractive bioenergy and waste / wastewater treatment technology. The advantages of AD for waste treatment include: production of a useable fuel (biogas/methane); possibility of high organic loading; reduced carbon footprint; and suitability for integration into a wide variety of process configurations and scales. Specifically, two important, and developing, applications exemplify the potential of AD technologies: (1) the integration of AD as the basis of the core technologies underpinning municipal wastewater, and sewage, treatment, to displace less sustainable, and more energy-intensive, aerobic biological treatment systems in urban water infrastructures; and (2) technical innovations for higher-rate conversions of high-solids wastestreams, and feedstocks, for the production of energy carriers (i.e. methane-biogas, but possibly also biohydrogen) and other industrially-relevant intermediates, such as organic acids. Internationally, the research effort to maximize AD biogas yield has increased ten-fold over the past decade. Depending on the feedstocks, bioreactor design and process parameters, fundamental and applied knowledge are still required to improve conversion rates and biogas yields. This Research Topic cover aspects related to AD processes, such as the effect of feedstock composition, as well as the effect of feedstock pre-treatment, bioreactor design and operating modes, on process efficiency; microbial community dynamics and systems biology; influence of macro- and micro-nutrient concentrations and availability; process control; upgrading and calibration of anaerobic digestion models (e.g. ADM1) considering the biochemical routes as well as the hydrodynamics in such ecosystems; and novel approaches to process monitoring, such as the development, and application, of novel, and rapid diagnostic assays, including those based on molecular microbiology. Detailed full-scale application studies were also particularly welcomed.
Author : Anonim
Publisher : Unknown
Page : 680 pages
File Size : 52,5 Mb
Release : 1984
Category : Solar energy
ISBN : UOM:39015024361506