Plant biomass conversion
著者
書誌事項
Plant biomass conversion
(Biomass and biofuels series)
Wiley-Blackwell, 2011
- : hbk
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注記
Includes bibliographical references and index
内容説明・目次
内容説明
A whole host of motivations are driving the development of the "renewables" industry- ranging from the desire to develop sustainable energy resources to the reduction of dangerous greenhouse gases that contribute to global warming. All energy utilized on the earth is ultimately derived from the sun through photosynthesis-the only truly renewable commodity.
As concerns regarding increasing energy prices, global warming and renewable resources continue to grow, so has scientific discovery into agricultural biomass conversion. Plant Biomass Conversion addresses both the development of plant biomass and conversion technology, in addition to issues surrounding biomass conversion, such as the affect on water resources and soil sustainability. This book also offers a brief overview of the current status of the industry and examples of production plants being used in current biomass conversion efforts.
目次
Contributors xi
Preface xiii
1 The Bioeconomy: A New Era of Products Derived from Renewable Plant-Based Feedstocks 3
Peter Nelson, Elizabeth Hood, and Randall Powell
1.1 Introduction 3
1.2 Market Opportunity for Biofuels and Biobased Products 5
1.3 Feedstocks 6
1.3.1 Biobased Feedstock Availability and Issues 6
1.3.2 Characterization of Lignocellulosic Feedstocks 8
1.3.3 The Role of Agricultural Biotechnology 9
1.3.4 Biomass Agricultural Equipment Development 11
1.4 The Biochemical Technology Platform 11
1.5 Investment and Major Players 12
1.6 The Role of the Farmer 14
1.7 Opportunities for Rural Development 16
1.8 Environmental Benefits 17
1.9 Economic Comparison of the Biochemical and Thermochemical Technology Platforms 17
1.10 Conclusions and Future Prospects 18
References 19
2 Agricultural Residues 21
James Hettenhaus
2.1 Introduction 21
2.1.1 Key Issues 22
2.2 Feedstock Supply 23
2.2.1 Residue Markets 26
2.2.2 Harvest Window 27
2.2.3 Residue Removal 27
2.2.4 Residue Management 28
2.2.5 Ag Equipment Needs 29
2.2.6 Operating Costs 33
2.2.7 Residue Nutrient Value 33
2.2.8 Land for Energy Crops 33
2.2.9 Farmer Outlook 34
2.2.10 Crop Research and Development 34
2.3 Feedstock Logistics 34
2.3.1 Bulk Density 35
2.3.2 Storage 36
2.3.3 Regional Biomass Processing Centers 43
2.4 Conclusion 48
Endnotes 49
References 49
3 Growing Systems for Traditional and New Forest-Based Materials 51
Randall Rousseau, Janet Hawkes, Shijie Liu, and Tom Amidon
3.1 Introduction 51
3.2 Natural Regeneration 54
3.3 Overall Growing Systems 54
3.3.1 The Beginnings of Biomass Plantation Production 55
3.3.2 Short Rotation Woody Crops 56
3.3.3 Other Types of Hardwood Plantations 59
3.3.4 Southern Pine 61
3.4 New Genetic Tools 62
3.5 Agroforestry 63
3.6 Products from Woody Biomass 67
3.6.1 Hemicellulosic Products 69
3.6.2 Biorefineries Using Woody Biomass 71
3.6.3 Hot-Water Extraction of Hemicellulose 73
3.6.4 Wood Extracts: Processing and Conversion 75
3.6.5 Residual Solid Wood Biomass: Processing and Conversion of the wood mass after extraction, an example 78
3.7 Summary 78
References 78
4 Dedicated Herbaceous Energy Crops 85
Keat (Thomas) Teoh, Shivakumar Pattada Devaiah, Deborah Vicuna Requesens, and Elizabeth E. Hood
4.1 Introduction 85
4.2 Miscanthus 85
4.2.1 Characteristics That Make Miscanthus a Potential Biomass Crop 87
4.2.2 Agronomy 87
4.3 Sweet Sorghum 90
4.3.1 Biology of Sweet Sorghum 92
4.3.2 Production 92
4.3.3 Potential Yields 94
4.3.4 Economic and Environmental Advantages of Sweet Sorghum 94
4.3.5 Production Challenges 96
4.4 Switchgrass 97
4.4.1 Physiology 97
4.4.2 Switchgrass Ecotypes 98
4.4.3 Advantages 98
4.4.4 Disadvantages 99
4.4.5 Yields 100
4.4.6 Switchgrass as a Bioenergy Crop 101
4.5 Conclusions and Future Prospects 101
References 104
5 Municipal Solid Waste as a Biomass Feedstock 109
David J. Webster
5.1 Introduction 109
5.2 Definitions 110
5.2.1 Second-Generation Conversion Technologies for Biofuels 110
5.3 Disposal Infrastructure and Transfer Stations 110
5.3.1 Collection Practices 112
5.3.2 Cost Parameters 112
5.4 Waste Generation 113
5.5 Waste Characterization 114
5.5.1 Composition of Generated MSW Prior to Disposal or Processing 114
5.5.2 Landfilled Waste Compared to Waste Generation 115
5.5.3 Water in MSW 116
5.5.4 Heavy Metals in MSW 117
5.6 Preparing MSW for Conversion Processing-Mixed Waste Material Recovery Facilities (MRFs) 119
5.6.1 Presorting 121
5.6.2 Mechanical Sorting Operations 122
5.6.3 Manual Sorting Operations 123
5.6.4 Recovery Rates of the MRF System 123
5.7 Cellulosic Content of MSW 124
5.7.1 Glucose and Ethanol Yields from MSW 124
5.8 Framing the Potential 125
References 126
6 Water Sustainability in Biomass Cropping Systems 129
Jennifer L. Bouldin and Rodney E. Wright
6.1 Introduction 129
6.2 Water Use in Bioenergy Production 130
6.3 Water Quality Issues in Bioenergy Crops 133
6.3.1 AGNPS Watershed Model 135
6.3.2 Water Quality and the Gulf Hypoxic Zone 138
6.4 Conclusions-Water Quantity and Quality 138
References 139
7 Soil Sustainability Issues in Energy Crop Production 143
V. Steven Green
7.1 Soil Sustainability Concepts 143
7.2 Bioenergy Crops and Soil Sustainability 145
7.2.1 Crop Residues 145
7.2.2 Dedicated Energy Crops 146
7.3 Resource Use in Biomass Production 149
7.3.1 Water and Soil 149
7.3.2 Land Use 150
7.4 Soil Sustainability Solutions 150
7.5 Conclusion 154
References 154
8 Fermentation Organisms for 5- and 6-Carbon Sugars 157
Nicholas Dufour, Jeffrey Swana, and Reeta P. Rao
8.1 Introduction 157
8.2 Fermentation 159
8.3 Metabolic Pathways 160
8.4 Fermenting Species 161
8.4.1 Brief Description of Major Species 175
8.5 Other Relevant Products 180
8.6 Summary 183
Endnotes 183
References 184
9 Pretreatment Options 199
Bradley A. Saville
9.1 Overview of Pretreatment Technologies 199
9.1.1 History 199
9.1.2 Mechanistic Assessment of Pretreatment 200
9.1.3 Severity Factor Concept 203
9.2 Pretreatment Classification 205
9.2.1 Mechanical Pretreatment Processes 206
9.2.2 Chemical Pretreatment Processes 206
9.2.3 Thermochemical Pretreatment Processes 209
9.2.4 Impact on Moisture Content and Hydraulic Load 210
9.3 Laboratory vs. Commercial Scale Pretreatment-What Do We Really Know? 211
9.3.1 Laboratory Studies 211
9.3.2 Pilot/Demonstration Scale Studies 211
9.3.3 Limitations of Laboratory-Scale Comparisons of Pretreatment Methods 214
9.4 Process Issues and Trade-Offs 215
9.4.1 Inhibitors 215
9.4.2 Hydrolysis Efficiency and Enzyme Loadings 218
9.4.3 Solvent/Catalyst Recovery 218
9.4.4 Viscosity Reduction and Hydraulic Load 218
9.5 Economics 220
9.6 Conclusions 224
References 224
10 Enzyme Production Systems for Biomass Conversion 227
John A. Howard, Zivko Nikolov, and Elizabeth E. Hood
10.1 Introduction 227
10.2 The Challenge: Volume and Cost of Enzymes Required 227
10.3 Theoretical Ways to Address the Challenge of Quantity of Enzyme and Cost Requirements 228
10.3.1 Increase Susceptibility for Biomass Deconstruction 229
10.3.2 Decrease Exogenous Enzyme Load 231
10.3.3 Increase Accumulation of Enzymes in Production Host 236
10.4 Cost of Producing Exogenous Enzymes 240
10.4.1 Cost Analysis 242
10.5 Summary and Future Prospects 245
References 246
11 Fermentation-Based Biofuels 255
Randy Kramer and Helene Belanger
11.1 Introduction 255
11.2 First-Generation Biofuels 256
11.2.1 Starch-Based Ethanol-United States 256
11.2.2 Sugar-Based Ethanol-Brazil 257
11.2.3 Biodiesel 258
11.3 Policy and Biofuel Implementation Status 260
11.3.1 North America 260
11.3.2 South America 262
11.3.3 Europe 262
11.3.4 Asia 263
11.4 Second-Generation Biofuels 265
11.4.1 Cellulosic Ethanol 265
11.4.2 Biobutanol 268
11.5 Issues for Biofuels Commercial Success 269
11.5.1 Transport by Pipeline 269
11.5.2 Decentralized Production and Local Distribution 270
11.5.3 Optimized Engine Performance 271
11.5.4 Value of Biorefinery Co-products 272
11.6 Summary 272
References 272
12 Biobased Chemicals and Polymers 275
Randall W. Powell, Clare Elton, Ross Prestidge, and Helene Belanger
12.1 Introduction 275
12.2 Biobased Feedstock Components 276
12.3 Biomass Conversion Technologies 277
12.3.1 Technology Platforms Overview 277
12.3.2 Lignocellulose Fractionation Overview 279
12.4 Biobased Products 287
12.4.1 Oil-Based Products 287
12.4.2 Sugar/Starch-Based Products 289
12.4.3 Polymer Products 293
12.4.4 Lignin Products 299
12.5 Summary 303
References 304
13 Carbon Offset Potential of Biomass-Based Energy 311
Gauri-Shankar Guha
13.1 Emerging Public Interest in Carbon 311
13.1.1 Overview 311
13.1.2 Initiatives to Address Anthropogenic Climate Change 311
13.1.3 GHG Mitigation and Carbon Sequestration Strategies 314
13.2 Theory of Carbon Markets 314
13.2.1 Tradable Permits and the Market for Emissions 314
13.2.2 Concept of Carbon Markets 315
13.2.3 Demand and Supply of Carbon Credits 316
13.3 Creation of Carbon Markets 317
13.3.1 Carbon Credits 317
13.3.2 Global Carbon Trade 318
13.3.3 Carbon Trading in the United States 318
13.3.4 The CCX Offset Program 318
13.4 Role of Biomass-Based Energy in Carbon Markets 319
13.4.1 Economic Significance of Bioenergy 319
13.4.2 Bioenergy Policies, Practices, and Trends 321
13.4.3 Carbon Offset Opportunities for Biofuels 323
13.5 Prognosis of Carbon Markets 324
References 325
14 Biofuel Economics 329
Daniel Klein-Marcuschamer, Brad Holmes, Blake A. Simmons, and Harvey W. Blanch
14.1 Introduction 329
14.2 Production Processes 330
14.3 Biomass Transportation and Handling 331
14.4 Conversion of Biomass into Sugars 332
14.5 Conversion of Sugars into Biofuels 335
14.6 Separation and Purification 337
14.7 Co-product Handling 337
14.8 Major Cost Drivers 338
14.8.1 Biomass-Associated Costs 338
14.8.2 Capital Expenses 340
14.8.3 Operating Costs 342
14.9 Risks 343
14.10 Policy Support 345
14.11 Infrastructure and Vehicle Modifications 346
14.12 Conclusions 347
14.13 Acknowledgments 348
References 348
Index 355
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