Author: Helen Treichel
Publisher:
ISBN: 9781536157192
Category : Science
Languages : en
Pages : 0
Book Description
In face of the increasingly obvious need to ensure the sustainability of the environment, alternative and renewable energy sources are no longer just the concern of environmentalists and have become commitments of governments virtually everywhere in the world. In this context, ethanol emerges as an excellent substitute for petroleum derivatives. This green alternative fuel is sustained by its own burning because when CO2 serves as a carbon source for the growth of plants, it will allow the carbohydrates to be fermented. In addition, currently different generations of this fuel are being proposed, considering the utilization of their own waste. However, challenges still need to be overcome to enable the second, third and fourth generations of ethanol. At the same time, other renewable fuel alternatives emerge to compete with it. The automobile industry, for example, has been developing new engines, hybrids or not, that can be powered by electricity or H2. In this regard, this book addresses, under different aspects, the main strategies to surpass the remaining obstacles, as well as the advantages and disadvantages of ethanol as a fuel of the future. In this context, the "Ethanol as a Green Alternative Fuel" book shows present and future scenarios about bioethanol and perspective in their chain, considering the economic and environmental impact mitigations approach.
Ethanol as a Green Alternative Fuel
Author: Helen Treichel
Publisher:
ISBN: 9781536157192
Category : Science
Languages : en
Pages : 0
Book Description
In face of the increasingly obvious need to ensure the sustainability of the environment, alternative and renewable energy sources are no longer just the concern of environmentalists and have become commitments of governments virtually everywhere in the world. In this context, ethanol emerges as an excellent substitute for petroleum derivatives. This green alternative fuel is sustained by its own burning because when CO2 serves as a carbon source for the growth of plants, it will allow the carbohydrates to be fermented. In addition, currently different generations of this fuel are being proposed, considering the utilization of their own waste. However, challenges still need to be overcome to enable the second, third and fourth generations of ethanol. At the same time, other renewable fuel alternatives emerge to compete with it. The automobile industry, for example, has been developing new engines, hybrids or not, that can be powered by electricity or H2. In this regard, this book addresses, under different aspects, the main strategies to surpass the remaining obstacles, as well as the advantages and disadvantages of ethanol as a fuel of the future. In this context, the "Ethanol as a Green Alternative Fuel" book shows present and future scenarios about bioethanol and perspective in their chain, considering the economic and environmental impact mitigations approach.
Publisher:
ISBN: 9781536157192
Category : Science
Languages : en
Pages : 0
Book Description
In face of the increasingly obvious need to ensure the sustainability of the environment, alternative and renewable energy sources are no longer just the concern of environmentalists and have become commitments of governments virtually everywhere in the world. In this context, ethanol emerges as an excellent substitute for petroleum derivatives. This green alternative fuel is sustained by its own burning because when CO2 serves as a carbon source for the growth of plants, it will allow the carbohydrates to be fermented. In addition, currently different generations of this fuel are being proposed, considering the utilization of their own waste. However, challenges still need to be overcome to enable the second, third and fourth generations of ethanol. At the same time, other renewable fuel alternatives emerge to compete with it. The automobile industry, for example, has been developing new engines, hybrids or not, that can be powered by electricity or H2. In this regard, this book addresses, under different aspects, the main strategies to surpass the remaining obstacles, as well as the advantages and disadvantages of ethanol as a fuel of the future. In this context, the "Ethanol as a Green Alternative Fuel" book shows present and future scenarios about bioethanol and perspective in their chain, considering the economic and environmental impact mitigations approach.
Alcohol Fuel
Author: Richard Freudenberger
Publisher: New Society Publishers
ISBN: 1550924389
Category : Technology & Engineering
Languages : en
Pages : 273
Book Description
Dwindling petroleum supplies and growing environmental concerns are significantly impacting the cost of petro-fuel and its infrastructure. The search for alternative fuel sources has led to ethanol, a gasoline substitute that is already in the marketplace as Gasohol and E-85. But large-scale production of corn-based ethanol is controversial as it threatens the world’s food supply. There are alternatives, however: Brazil uses sugar cane, which is up to six times more productive in energy conversion. After the energy crisis of the 1970s, there was a lot of misinformation about the cost of individual ethanol production. In order to achieve energy independence from gasoline, ethanol lends itself to small-scale production, and especially to cooperative ventures in rural communities, often using “waste” feedstock. Alcohol Fuel is a practical, grassroots book that will give readers all the information they need, covering every aspect of making and using ethanol for fuel, including: *Permitting and planning *Budgeting and setup *Sourcing feedstocks *Finding and building distillation equipment *Storage and safety *Practical applications for converting motor vehicles, farm equipment, and space-heating systems The practical, user-friendly information on basic equipment needs, fermentation recipes, and distillation designs will be of interest to readers looking for information, as well as to those ready to make the switch. Richard Freudenberger was research director of Mother Earth News, where he managed the Alcohol Fuel Program and developed solar and renewable solar and energy projects. He is publisher and technical editor of BackHome magazine and lives in Hendersonville, North Carolina.
Publisher: New Society Publishers
ISBN: 1550924389
Category : Technology & Engineering
Languages : en
Pages : 273
Book Description
Dwindling petroleum supplies and growing environmental concerns are significantly impacting the cost of petro-fuel and its infrastructure. The search for alternative fuel sources has led to ethanol, a gasoline substitute that is already in the marketplace as Gasohol and E-85. But large-scale production of corn-based ethanol is controversial as it threatens the world’s food supply. There are alternatives, however: Brazil uses sugar cane, which is up to six times more productive in energy conversion. After the energy crisis of the 1970s, there was a lot of misinformation about the cost of individual ethanol production. In order to achieve energy independence from gasoline, ethanol lends itself to small-scale production, and especially to cooperative ventures in rural communities, often using “waste” feedstock. Alcohol Fuel is a practical, grassroots book that will give readers all the information they need, covering every aspect of making and using ethanol for fuel, including: *Permitting and planning *Budgeting and setup *Sourcing feedstocks *Finding and building distillation equipment *Storage and safety *Practical applications for converting motor vehicles, farm equipment, and space-heating systems The practical, user-friendly information on basic equipment needs, fermentation recipes, and distillation designs will be of interest to readers looking for information, as well as to those ready to make the switch. Richard Freudenberger was research director of Mother Earth News, where he managed the Alcohol Fuel Program and developed solar and renewable solar and energy projects. He is publisher and technical editor of BackHome magazine and lives in Hendersonville, North Carolina.
David Blume's Alcohol Can be a Gas!
Author: David Blume
Publisher: Iiea
ISBN: 9780979043789
Category : Alcohol as fuel
Languages : en
Pages : 0
Book Description
Six volumes bound under one cover make this the most comprehensive book ever written on alcohol fuel production, use, policy, history, ecology, politics and economic perspectives. Thoroughly addresses both past and present controversies, myths and misconceptions that permeate the public debate. It contains the most exhaustive treatment of potential energy crops to be found anywhere. Crops for all climates and soil types are detailed including cellulosic materials. Unique feedstocks that can have global impact like ocean kelp, cattails used for treating sewage, and creative waste products are covered. Design and construction of alcohol plants from 2 gallons per hour to 50 gallons per hour including detailed distillery design data is described in laymen?s terms for easy construction. Case histories of actual plants are covered in interviews of operations built by the author?s students.The book compares qualities of alcohol versus gasoline and diesel. In exceptional detail, conversion of gasoline, diesel, aircraft, motorcycle, two stroke, and utility engines are described. Using alcohol to produce electricity and hot water as well as cooking and cooling are also addressed. Business models for micro and small plants are laid out enabling the reader to design their own business.The author?s original concept of Community Supported Energy projects in which communities establish driver owned alcohol stations and then contract with farmers to supply the station are outlined clearly so activists can organize them. Profusely illustrated with 514 charts, photos and drawings. The book is thoroughly documented with 473 endnotes and a 6300 entry index.
Publisher: Iiea
ISBN: 9780979043789
Category : Alcohol as fuel
Languages : en
Pages : 0
Book Description
Six volumes bound under one cover make this the most comprehensive book ever written on alcohol fuel production, use, policy, history, ecology, politics and economic perspectives. Thoroughly addresses both past and present controversies, myths and misconceptions that permeate the public debate. It contains the most exhaustive treatment of potential energy crops to be found anywhere. Crops for all climates and soil types are detailed including cellulosic materials. Unique feedstocks that can have global impact like ocean kelp, cattails used for treating sewage, and creative waste products are covered. Design and construction of alcohol plants from 2 gallons per hour to 50 gallons per hour including detailed distillery design data is described in laymen?s terms for easy construction. Case histories of actual plants are covered in interviews of operations built by the author?s students.The book compares qualities of alcohol versus gasoline and diesel. In exceptional detail, conversion of gasoline, diesel, aircraft, motorcycle, two stroke, and utility engines are described. Using alcohol to produce electricity and hot water as well as cooking and cooling are also addressed. Business models for micro and small plants are laid out enabling the reader to design their own business.The author?s original concept of Community Supported Energy projects in which communities establish driver owned alcohol stations and then contract with farmers to supply the station are outlined clearly so activists can organize them. Profusely illustrated with 514 charts, photos and drawings. The book is thoroughly documented with 473 endnotes and a 6300 entry index.
Gasoline, Diesel and Ethanol Biofuels from Grasses and Plants
Author: Ram B. Gupta
Publisher: Cambridge University Press
ISBN: 9780521763998
Category : Technology & Engineering
Languages : en
Pages : 246
Book Description
The world is currently faced with two significant problems: fossil fuel depletion and environmental degradation, which are continuously being exacerbated due to increasing global energy consumption. As a substitute for petroleum, renewable fuels have been receiving increasing attention due a variety of environmental, economic, and societal benefits. The first-generation biofuels - ethanol from sugar or corn and biodiesel from vegetable oils - are already on the market. The goal of this book is to introduce readers to second-generation biofuels obtained from non-food biomass, such as forest residue, agricultural residue, switch grass, corn stover, waste wood, municipal solid wastes, and so on. Various technologies are discussed, including cellulosic ethanol, biomass gasification, synthesis of diesel and gasoline, bio-crude by hydrothermal liquefaction, bio-oil by fast pyrolysis, and the upgradation of biofuel. This book strives to serve as a comprehensive document presenting various technological pathways and environmental and economic issues related to biofuels.
Publisher: Cambridge University Press
ISBN: 9780521763998
Category : Technology & Engineering
Languages : en
Pages : 246
Book Description
The world is currently faced with two significant problems: fossil fuel depletion and environmental degradation, which are continuously being exacerbated due to increasing global energy consumption. As a substitute for petroleum, renewable fuels have been receiving increasing attention due a variety of environmental, economic, and societal benefits. The first-generation biofuels - ethanol from sugar or corn and biodiesel from vegetable oils - are already on the market. The goal of this book is to introduce readers to second-generation biofuels obtained from non-food biomass, such as forest residue, agricultural residue, switch grass, corn stover, waste wood, municipal solid wastes, and so on. Various technologies are discussed, including cellulosic ethanol, biomass gasification, synthesis of diesel and gasoline, bio-crude by hydrothermal liquefaction, bio-oil by fast pyrolysis, and the upgradation of biofuel. This book strives to serve as a comprehensive document presenting various technological pathways and environmental and economic issues related to biofuels.
Automotive Fuels Reference Book
Author: Paul Richards
Publisher: SAE International
ISBN: 0768006384
Category : Technology & Engineering
Languages : en
Pages : 870
Book Description
The first two editions of this title, published by SAE International in 1990 and 1995, have been best-selling definitive references for those needing technical information about automotive fuels. This long-awaited new edition has been thoroughly revised and updated, yet retains the original fundamental fuels information that readers find so useful. This book is written for those with an interest in or a need to understand automotive fuels. Because automotive fuels can no longer be developed in isolation from the engines that will convert the fuel into the power necessary to drive our automobiles, knowledge of automotive fuels will also be essential to those working with automotive engines. Small quantities of fuel additives increasingly play an important role in bridging the gap that often exists between fuel that can easily be produced and fuel that is needed by the ever-more sophisticated automotive engine. This book pulls together in a single, extensively referenced volume, the three different but related topics of automotive fuels, fuel additives, and engines, and shows how all three areas work together. It includes a brief history of automotive fuels development, followed by chapters on automotive fuels manufacture from crude oil and other fossil sources. One chapter is dedicated to the manufacture of automotive fuels and fuel blending components from renewable sources. The safe handling, transport, and storage of fuels, from all sources, are covered. New combustion systems to achieve reduced emissions and increased efficiency are discussed, and the way in which the fuels’ physical and chemical characteristics affect these combustion processes and the emissions produced are included. There is also discussion on engine fuel system development and how these different systems affect the corresponding fuel requirements. Because the book is for a global market, fuel system technologies that only exist in the legacy fleet in some markets are included. The way in which fuel requirements are developed and specified is discussed. This covers test methods from simple laboratory bench tests, through engine testing, and long-term test procedures.
Publisher: SAE International
ISBN: 0768006384
Category : Technology & Engineering
Languages : en
Pages : 870
Book Description
The first two editions of this title, published by SAE International in 1990 and 1995, have been best-selling definitive references for those needing technical information about automotive fuels. This long-awaited new edition has been thoroughly revised and updated, yet retains the original fundamental fuels information that readers find so useful. This book is written for those with an interest in or a need to understand automotive fuels. Because automotive fuels can no longer be developed in isolation from the engines that will convert the fuel into the power necessary to drive our automobiles, knowledge of automotive fuels will also be essential to those working with automotive engines. Small quantities of fuel additives increasingly play an important role in bridging the gap that often exists between fuel that can easily be produced and fuel that is needed by the ever-more sophisticated automotive engine. This book pulls together in a single, extensively referenced volume, the three different but related topics of automotive fuels, fuel additives, and engines, and shows how all three areas work together. It includes a brief history of automotive fuels development, followed by chapters on automotive fuels manufacture from crude oil and other fossil sources. One chapter is dedicated to the manufacture of automotive fuels and fuel blending components from renewable sources. The safe handling, transport, and storage of fuels, from all sources, are covered. New combustion systems to achieve reduced emissions and increased efficiency are discussed, and the way in which the fuels’ physical and chemical characteristics affect these combustion processes and the emissions produced are included. There is also discussion on engine fuel system development and how these different systems affect the corresponding fuel requirements. Because the book is for a global market, fuel system technologies that only exist in the legacy fleet in some markets are included. The way in which fuel requirements are developed and specified is discussed. This covers test methods from simple laboratory bench tests, through engine testing, and long-term test procedures.
Green Fuels Technology
Author: Carlos Ricardo Soccol
Publisher: Springer
ISBN: 3319302051
Category : Business & Economics
Languages : en
Pages : 558
Book Description
This book presents key recent developments in biofuel policy, products, processes, patents and innovative technologies. It presents several case studies, which maximize reader insights into how innovative green energy technologies can be implemented on an industrial scale, with illustrations, photos and new approaches. It also analyzes in detail several different technological aspects of the research into and production of green fuels from the first, second and third generation, such as, bioethanol, biogas, biohydrogen, biobutanol, biofuels from pyrolysis, and discusses their economic and environmental impacts. A new source of information for engineers, technicians and students involved in production and research in the biofuels sector, this book also provides a valuable resource for industry, covering the current and future status of biofuels.
Publisher: Springer
ISBN: 3319302051
Category : Business & Economics
Languages : en
Pages : 558
Book Description
This book presents key recent developments in biofuel policy, products, processes, patents and innovative technologies. It presents several case studies, which maximize reader insights into how innovative green energy technologies can be implemented on an industrial scale, with illustrations, photos and new approaches. It also analyzes in detail several different technological aspects of the research into and production of green fuels from the first, second and third generation, such as, bioethanol, biogas, biohydrogen, biobutanol, biofuels from pyrolysis, and discusses their economic and environmental impacts. A new source of information for engineers, technicians and students involved in production and research in the biofuels sector, this book also provides a valuable resource for industry, covering the current and future status of biofuels.
Beyond Oil and Gas
Author: George A. Olah
Publisher: John Wiley & Sons
ISBN: 3527644636
Category : Science
Languages : en
Pages : 351
Book Description
The world is currently consuming about 85 million barrels of oil a day, and about two-thirds as much natural gas equivalent, both derived from non-renewable natural sources. In the foreseeable future, our energy needs will come from any available alternate source. Methanol is one such viable alternative, and also offers a convenient solution for efficient energy storage on a large scale. In this updated and enlarged edition, renowned chemists discuss in a clear and readily accessible manner the pros and cons of humankind's current main energy sources, while providing new ways to overcome obstacles. Following an introduction, the authors look at the interrelationship of fuels and energy, and at the extent of our non-renewable fossil fuels. They also discuss the hydrogen economy and its significant shortcomings. The main focus is on the conversion of CO2 from industrial as well as natural sources into liquid methanol and related DME, a diesel fuel substitute that can replace LNG and LPG. The book is rounded off with an optimistic look at future possibilities. A forward-looking and inspiring work that vividly illustrates potential solutions to our energy and environmental problems.
Publisher: John Wiley & Sons
ISBN: 3527644636
Category : Science
Languages : en
Pages : 351
Book Description
The world is currently consuming about 85 million barrels of oil a day, and about two-thirds as much natural gas equivalent, both derived from non-renewable natural sources. In the foreseeable future, our energy needs will come from any available alternate source. Methanol is one such viable alternative, and also offers a convenient solution for efficient energy storage on a large scale. In this updated and enlarged edition, renowned chemists discuss in a clear and readily accessible manner the pros and cons of humankind's current main energy sources, while providing new ways to overcome obstacles. Following an introduction, the authors look at the interrelationship of fuels and energy, and at the extent of our non-renewable fossil fuels. They also discuss the hydrogen economy and its significant shortcomings. The main focus is on the conversion of CO2 from industrial as well as natural sources into liquid methanol and related DME, a diesel fuel substitute that can replace LNG and LPG. The book is rounded off with an optimistic look at future possibilities. A forward-looking and inspiring work that vividly illustrates potential solutions to our energy and environmental problems.
Direct Alcohol Fuel Cells for Portable Applications
Author: Alexandra M. F. R. Pinto
Publisher: Academic Press
ISBN: 0128118989
Category : Technology & Engineering
Languages : en
Pages : 356
Book Description
Direct Alcohol Fuel Cells for Portable Applications: Fundamentals, Engineering and Advances presents the fundamental concepts, technological advances and challenges in developing, modeling and deploying fuel cells and fuel cell systems for portable devices, including micro and mini fuel cells. The authors review the fundamental science of direct alcohol fuel cells, covering, in detail, thermodynamics, electrode kinetics and electrocatalysis of charge-transfer reactions, mass and heat transfer phenomena, and basic modeling aspects. In addition, the book examines other fuels in DAFCs, such as formic acid, ethylene glycol and glycerol, along with technological aspects and applications, including case studies and cost analysis. Researchers, engineering professionals, fuel cell developers, policymakers and senior graduate students will find this a valuable resource. The book's comprehensive coverage of fundamentals is especially useful for graduate students, advanced undergraduate students and those new to the field. - Provides a comprehensive understanding of the fundamentals of DAFCs and their basic components, design and performance - Presents current and complete information on the state-of-the-art of DAFC technology and its most relevant challenges for commercial deployment - Includes practical application examples, problems and case studies - Covers the use of other fuels, such as formic acid, ethylene glycol and glycerol
Publisher: Academic Press
ISBN: 0128118989
Category : Technology & Engineering
Languages : en
Pages : 356
Book Description
Direct Alcohol Fuel Cells for Portable Applications: Fundamentals, Engineering and Advances presents the fundamental concepts, technological advances and challenges in developing, modeling and deploying fuel cells and fuel cell systems for portable devices, including micro and mini fuel cells. The authors review the fundamental science of direct alcohol fuel cells, covering, in detail, thermodynamics, electrode kinetics and electrocatalysis of charge-transfer reactions, mass and heat transfer phenomena, and basic modeling aspects. In addition, the book examines other fuels in DAFCs, such as formic acid, ethylene glycol and glycerol, along with technological aspects and applications, including case studies and cost analysis. Researchers, engineering professionals, fuel cell developers, policymakers and senior graduate students will find this a valuable resource. The book's comprehensive coverage of fundamentals is especially useful for graduate students, advanced undergraduate students and those new to the field. - Provides a comprehensive understanding of the fundamentals of DAFCs and their basic components, design and performance - Presents current and complete information on the state-of-the-art of DAFC technology and its most relevant challenges for commercial deployment - Includes practical application examples, problems and case studies - Covers the use of other fuels, such as formic acid, ethylene glycol and glycerol
Fuel from Farms
Author: Solar Energy Information Data Bank (U.S.)
Publisher:
ISBN:
Category : Agricultural processing
Languages : en
Pages : 180
Book Description
Decision to produce; Markets and uses; Market assessment; Prodution potential; Equipment selection; Financial requirements; Decision and planning workssheets; Basic ethanol production; Preparation of feedstocks, Fermentation; Distillation; Types of feedstocks; Coproduct yields; Agronomic considerations; Plant design; Overall plant considerations; Process control; Representative ethanol plant; Maintenance checklist; Business plan; Analysis of financial requirements; Organizational form; Financing; Case study; Summary of legislation; Bureau of alcohol, tabacco, and firearms permit information; Enviromental considerations.
Publisher:
ISBN:
Category : Agricultural processing
Languages : en
Pages : 180
Book Description
Decision to produce; Markets and uses; Market assessment; Prodution potential; Equipment selection; Financial requirements; Decision and planning workssheets; Basic ethanol production; Preparation of feedstocks, Fermentation; Distillation; Types of feedstocks; Coproduct yields; Agronomic considerations; Plant design; Overall plant considerations; Process control; Representative ethanol plant; Maintenance checklist; Business plan; Analysis of financial requirements; Organizational form; Financing; Case study; Summary of legislation; Bureau of alcohol, tabacco, and firearms permit information; Enviromental considerations.
Biogeochemistry
Author: W.H. Schlesinger
Publisher: Academic Press
ISBN: 0123858747
Category : Nature
Languages : en
Pages : 689
Book Description
For the past 4 billion years, the chemistry of the Earth's surface, where all life exists, has changed remarkably. Historically, these changes have occurred slowly enough to allow life to adapt and evolve. In more recent times, the chemistry of the Earth is being altered at a staggering rate, fueled by industrialization and an ever-growing human population. Human activities, from the rapid consumption of resources to the destruction of the rainforests and the expansion of smog-covered cities, are all leading to rapid changes in the basic chemistry of the Earth. The Third Edition of Biogeochemistry considers the effects of life on the Earth's chemistry on a global level. This expansive text employs current technology to help students extrapolate small-scale examples to the global level, and also discusses the instrumentation being used by NASA and its role in studies of global change. With the Earth's changing chemistry as the focus, this text pulls together the many disparate fields that are encompassed by the broad reach of biogeochemistry. With extensive cross-referencing of chapters, figures, and tables, and an interdisciplinary coverage of the topic at hand, this text will provide an excellent framework for courses examining global change and environmental chemistry, and will also be a useful self-study guide. Emphasizes the effects of life on the basic chemistry of the atmosphere, the soils, and seawaters of the EarthCalculates and compares the effects of industrial emissions, land clearing, agriculture, and rising population on Earth's chemistrySynthesizes the global cycles of carbon, nitrogen, phosphorous, and sulfur, and suggests the best current budgets for atmospheric gases such as ammonia, nitrous oxide, dimethyl sulfide, and carbonyl sulfideIncludes an extensive review and up-to-date synthesis of the current literature on the Earth's biogeochemistry.
Publisher: Academic Press
ISBN: 0123858747
Category : Nature
Languages : en
Pages : 689
Book Description
For the past 4 billion years, the chemistry of the Earth's surface, where all life exists, has changed remarkably. Historically, these changes have occurred slowly enough to allow life to adapt and evolve. In more recent times, the chemistry of the Earth is being altered at a staggering rate, fueled by industrialization and an ever-growing human population. Human activities, from the rapid consumption of resources to the destruction of the rainforests and the expansion of smog-covered cities, are all leading to rapid changes in the basic chemistry of the Earth. The Third Edition of Biogeochemistry considers the effects of life on the Earth's chemistry on a global level. This expansive text employs current technology to help students extrapolate small-scale examples to the global level, and also discusses the instrumentation being used by NASA and its role in studies of global change. With the Earth's changing chemistry as the focus, this text pulls together the many disparate fields that are encompassed by the broad reach of biogeochemistry. With extensive cross-referencing of chapters, figures, and tables, and an interdisciplinary coverage of the topic at hand, this text will provide an excellent framework for courses examining global change and environmental chemistry, and will also be a useful self-study guide. Emphasizes the effects of life on the basic chemistry of the atmosphere, the soils, and seawaters of the EarthCalculates and compares the effects of industrial emissions, land clearing, agriculture, and rising population on Earth's chemistrySynthesizes the global cycles of carbon, nitrogen, phosphorous, and sulfur, and suggests the best current budgets for atmospheric gases such as ammonia, nitrous oxide, dimethyl sulfide, and carbonyl sulfideIncludes an extensive review and up-to-date synthesis of the current literature on the Earth's biogeochemistry.