Author: Linda Godfrey
Publisher: Routledge
ISBN: 0429514093
Category : Technology & Engineering
Languages : en
Pages : 0
Book Description
Following an active science-meets-industry approach on dealing with biomass and organics waste streams, this timely book foregrounds key issues facing South African policy makers, industry practitioners and scholars. The editors drew together a wide pool of experts in the biomass and organic valorisation industry and research, offering the most recent research, development and innovation undertaken by South African universities and science councils. Spanning twelve chapters and divided into the following four key parts, the book offers solutions to industry and research on: Quantifying organic waste: An overview of potential sources and volumes is offered, with an identification and characterisation of solid biowaste residues. Biological treatment, covering the latest norms and standards; a biorefinery approach for the sugar industry; an integrated waste management approach for municipal sewage treatment; biogas production from abattoir waste; optimisation of biogas production from animal waste; and integrated bioremediation and beneficiation of bio-based waste. Mechanical and chemical treatment, covering the beneficiation of sawdust waste; developing sustainable biobased polymer and bio-nanocomposite materials; and the valorisation of waste mango seeds. Thermal treatment, which evaluates different municipal solid waste recycling targets in terms of energy recovery and CO2 reduction.
Opportunities for Biomass and Organic Waste Valorisation
Author: Linda Godfrey
Publisher: Routledge
ISBN: 0429514093
Category : Technology & Engineering
Languages : en
Pages : 0
Book Description
Following an active science-meets-industry approach on dealing with biomass and organics waste streams, this timely book foregrounds key issues facing South African policy makers, industry practitioners and scholars. The editors drew together a wide pool of experts in the biomass and organic valorisation industry and research, offering the most recent research, development and innovation undertaken by South African universities and science councils. Spanning twelve chapters and divided into the following four key parts, the book offers solutions to industry and research on: Quantifying organic waste: An overview of potential sources and volumes is offered, with an identification and characterisation of solid biowaste residues. Biological treatment, covering the latest norms and standards; a biorefinery approach for the sugar industry; an integrated waste management approach for municipal sewage treatment; biogas production from abattoir waste; optimisation of biogas production from animal waste; and integrated bioremediation and beneficiation of bio-based waste. Mechanical and chemical treatment, covering the beneficiation of sawdust waste; developing sustainable biobased polymer and bio-nanocomposite materials; and the valorisation of waste mango seeds. Thermal treatment, which evaluates different municipal solid waste recycling targets in terms of energy recovery and CO2 reduction.
Publisher: Routledge
ISBN: 0429514093
Category : Technology & Engineering
Languages : en
Pages : 0
Book Description
Following an active science-meets-industry approach on dealing with biomass and organics waste streams, this timely book foregrounds key issues facing South African policy makers, industry practitioners and scholars. The editors drew together a wide pool of experts in the biomass and organic valorisation industry and research, offering the most recent research, development and innovation undertaken by South African universities and science councils. Spanning twelve chapters and divided into the following four key parts, the book offers solutions to industry and research on: Quantifying organic waste: An overview of potential sources and volumes is offered, with an identification and characterisation of solid biowaste residues. Biological treatment, covering the latest norms and standards; a biorefinery approach for the sugar industry; an integrated waste management approach for municipal sewage treatment; biogas production from abattoir waste; optimisation of biogas production from animal waste; and integrated bioremediation and beneficiation of bio-based waste. Mechanical and chemical treatment, covering the beneficiation of sawdust waste; developing sustainable biobased polymer and bio-nanocomposite materials; and the valorisation of waste mango seeds. Thermal treatment, which evaluates different municipal solid waste recycling targets in terms of energy recovery and CO2 reduction.
Waste Valorisation
Author: Carol Sze Ki Lin
Publisher: John Wiley & Sons
ISBN: 1119502705
Category : Science
Languages : en
Pages : 282
Book Description
A guide to the wide-variety of waste valorisation techniques related to various biomass, waste materials and by products Waste Valorisation provides a comprehensive review of waste chemistry and its application to the generation of value-added products. The authors – noted experts on the topic – offer a clear understanding of waste diversity, drivers and policies governing its valorisation based on the location. The book provides information on the principles behind various valorisation schemes and offers a description of general treatment options with their evaluation guidelines in terms of cost, energy consumption and waste generation. Each of the book's chapters contain an introduction which summarises the current production and processing methods, yields, energy sources and other pertinent information for each specific type of waste. The authors focus on the most relevant novel technologies for value-added processing of waste streams or industrial by-products which can readily be integrated into current waste management systems. They also provide the pertinent technical, economic, social and environmental evaluations of bioconversions as future sustainable technologies in a biorefinery. This important book: Presents the most current technologies which integrate waste and/or by-product valorisation Includes discussions on end-product purity and life-cycle assessment challenges Explores relevant novel technologies for value-added processing of waste streams or industrial by-products which can be integrated into current waste management systems Offers a guide to waste reuse, a key sustainability goal for existing biorefineries wishing to reduce material and environmental costs Written for academic researchers and industrial scientists working in agricultural and food production, bioconversions and waste management professionals, Waste Valorisation is an authoritative guide to the chemistry and applications of waste materials and provides an overview of the most recent developments in the field.
Publisher: John Wiley & Sons
ISBN: 1119502705
Category : Science
Languages : en
Pages : 282
Book Description
A guide to the wide-variety of waste valorisation techniques related to various biomass, waste materials and by products Waste Valorisation provides a comprehensive review of waste chemistry and its application to the generation of value-added products. The authors – noted experts on the topic – offer a clear understanding of waste diversity, drivers and policies governing its valorisation based on the location. The book provides information on the principles behind various valorisation schemes and offers a description of general treatment options with their evaluation guidelines in terms of cost, energy consumption and waste generation. Each of the book's chapters contain an introduction which summarises the current production and processing methods, yields, energy sources and other pertinent information for each specific type of waste. The authors focus on the most relevant novel technologies for value-added processing of waste streams or industrial by-products which can readily be integrated into current waste management systems. They also provide the pertinent technical, economic, social and environmental evaluations of bioconversions as future sustainable technologies in a biorefinery. This important book: Presents the most current technologies which integrate waste and/or by-product valorisation Includes discussions on end-product purity and life-cycle assessment challenges Explores relevant novel technologies for value-added processing of waste streams or industrial by-products which can be integrated into current waste management systems Offers a guide to waste reuse, a key sustainability goal for existing biorefineries wishing to reduce material and environmental costs Written for academic researchers and industrial scientists working in agricultural and food production, bioconversions and waste management professionals, Waste Valorisation is an authoritative guide to the chemistry and applications of waste materials and provides an overview of the most recent developments in the field.
Advanced Organic Waste Management
Author: Chaudhery Mustansar Hussain
Publisher: Elsevier
ISBN: 0323857922
Category : Science
Languages : en
Pages : 520
Book Description
Advanced Organic Waste Management: Sustainable Practices and Approaches provides an integrated holistic approach to the challenges associated with organic waste management, particularly related to sustainability, lifecycle assessment, emerging regulations, and novel approaches for resource and energy recovery. In addition to traditional techniques, such as anaerobic digestion, composting, innovative and emerging techniques of waste recycling like hydrothermal carbonization and vermicomposting are included. The book combines the fundamentals and practices of sustainable organic waste management with successful case studies from developed and developing countries, highlighting practical applications and challenges. Sections cover global organic waste generation, encompassing sources and types, composition and characteristics, focus on technical aspects related to various resource recovery techniques like composting and vermicomposting, cover various waste-to-energy technologies, illustrate various environmental management tools for organic waste, present innovative organic waste management practices and strategies complemented by detailed case studies, introduce the circular bioeconomy approach, and more. Presents the fundamentals and practices of sustainable, organic waste management, with emerging regulations and up-to-date analysis on environmental management tools such as lifecycle assessment in a comprehensive manner Offers the latest information on novel concepts and strategies for organic waste management, particularly zero waste and the circular bioeconomy Includes the latest research findings and future perspectives of innovative and emerging techniques of waste recycling, such as hydrothermal carbonization and vermicomposting
Publisher: Elsevier
ISBN: 0323857922
Category : Science
Languages : en
Pages : 520
Book Description
Advanced Organic Waste Management: Sustainable Practices and Approaches provides an integrated holistic approach to the challenges associated with organic waste management, particularly related to sustainability, lifecycle assessment, emerging regulations, and novel approaches for resource and energy recovery. In addition to traditional techniques, such as anaerobic digestion, composting, innovative and emerging techniques of waste recycling like hydrothermal carbonization and vermicomposting are included. The book combines the fundamentals and practices of sustainable organic waste management with successful case studies from developed and developing countries, highlighting practical applications and challenges. Sections cover global organic waste generation, encompassing sources and types, composition and characteristics, focus on technical aspects related to various resource recovery techniques like composting and vermicomposting, cover various waste-to-energy technologies, illustrate various environmental management tools for organic waste, present innovative organic waste management practices and strategies complemented by detailed case studies, introduce the circular bioeconomy approach, and more. Presents the fundamentals and practices of sustainable, organic waste management, with emerging regulations and up-to-date analysis on environmental management tools such as lifecycle assessment in a comprehensive manner Offers the latest information on novel concepts and strategies for organic waste management, particularly zero waste and the circular bioeconomy Includes the latest research findings and future perspectives of innovative and emerging techniques of waste recycling, such as hydrothermal carbonization and vermicomposting
Bio-valorization of Waste
Author: Shachi Shah
Publisher: Springer Nature
ISBN: 9811596964
Category : Science
Languages : en
Pages : 356
Book Description
This book explores the concept and methods of waste management with a new approach of biological valorization. Waste valorization is a process that aims to reduce, reuse, and recycle the waste into usable, value-added, and environmental benign raw materials which can be a source of energy. The book brings together comprehensive information to assert that waste can be converted into a resource or a raw material for value addition. Waste valorization imbibes the natural recycling principles of zero waste, loop closing, and underlines the importance of sustainable and environmentally friendly alternatives. Drawing upon research and examples from around the world, the book is offering an up-to-date account, and insight into the contours of waste valorization principles, biovalorization technologies for diverse group of wastes including agricultural, municipal, and industrial waste. It further discusses the emerging paradigms of waste valorization, waste biorefineries, valorization technologies for energy, biofuel, and biochemical production. The book meets the growing global needs for a comprehensive and holistic outlook on waste management. It is of interest to teachers, researchers, scientists, capacity builders and policymakers. Also, the book serves as additional reading material for undergraduate and graduate students of biotechnology and environmental sciences.
Publisher: Springer Nature
ISBN: 9811596964
Category : Science
Languages : en
Pages : 356
Book Description
This book explores the concept and methods of waste management with a new approach of biological valorization. Waste valorization is a process that aims to reduce, reuse, and recycle the waste into usable, value-added, and environmental benign raw materials which can be a source of energy. The book brings together comprehensive information to assert that waste can be converted into a resource or a raw material for value addition. Waste valorization imbibes the natural recycling principles of zero waste, loop closing, and underlines the importance of sustainable and environmentally friendly alternatives. Drawing upon research and examples from around the world, the book is offering an up-to-date account, and insight into the contours of waste valorization principles, biovalorization technologies for diverse group of wastes including agricultural, municipal, and industrial waste. It further discusses the emerging paradigms of waste valorization, waste biorefineries, valorization technologies for energy, biofuel, and biochemical production. The book meets the growing global needs for a comprehensive and holistic outlook on waste management. It is of interest to teachers, researchers, scientists, capacity builders and policymakers. Also, the book serves as additional reading material for undergraduate and graduate students of biotechnology and environmental sciences.
From Waste to Value
Author: Antje Klitkou
Publisher: Routledge
ISBN: 0429863241
Category : Business & Economics
Languages : en
Pages : 308
Book Description
From Waste to Value investigates how streams of organic waste and residues can be transformed into valuable products, to foster a transition towards a sustainable and circular bioeconomy. The studies are carried out within a cross-disciplinary framework, drawing on a diverse set of theoretical approaches and defining different valorisation pathways. Organic waste streams from households and industry are becoming a valuable resource in today’s economies. Substances that have long represented a cost to companies and a burden for society are now becoming an asset. Waste products, such as leftover food, forest residues and animal carcasses, can be turned into valuable products such as biomaterials, biochemicals and biopharmaceuticals. Exploiting these waste resources is challenging, however. It requires that companies develop new technologies and that public authorities introduce new regulation and governance models. This book helps policy-makers govern and regulate bio-based industries, and helps industry actors to identify and exploit new opportunities in the circular bioeconomy. Moreover, it provides important insights for all students and scholars concerned with renewable energy, sustainable development and climate change.
Publisher: Routledge
ISBN: 0429863241
Category : Business & Economics
Languages : en
Pages : 308
Book Description
From Waste to Value investigates how streams of organic waste and residues can be transformed into valuable products, to foster a transition towards a sustainable and circular bioeconomy. The studies are carried out within a cross-disciplinary framework, drawing on a diverse set of theoretical approaches and defining different valorisation pathways. Organic waste streams from households and industry are becoming a valuable resource in today’s economies. Substances that have long represented a cost to companies and a burden for society are now becoming an asset. Waste products, such as leftover food, forest residues and animal carcasses, can be turned into valuable products such as biomaterials, biochemicals and biopharmaceuticals. Exploiting these waste resources is challenging, however. It requires that companies develop new technologies and that public authorities introduce new regulation and governance models. This book helps policy-makers govern and regulate bio-based industries, and helps industry actors to identify and exploit new opportunities in the circular bioeconomy. Moreover, it provides important insights for all students and scholars concerned with renewable energy, sustainable development and climate change.
Organic Waste Composting through Nexus Thinking
Author: Hiroshan Hettiarachchi
Publisher: Springer Nature
ISBN: 3030362833
Category : Technology & Engineering
Languages : en
Pages : 236
Book Description
Organic waste composting is another excellent example to demonstrate the power and the benefits of nexus thinking. Even though organic waste composting itself is not a new topic, those who want to start a new project or align an ongoing project with nexus thinking, find it difficult to gather the necessary information. With nine case studies from four continents, this book aims to fill above gap in literature. While current literature on composting is often found to be limited to either soil/agriculture sector or waste management sector, this book presents a combined point of view. This open access book starts with an introductory chapter that describes the need to bring the waste management aspects and soil nutrient management aspects of compost production into one integrated theme. The relevance of nexus thinking and the Sustainable Development Goals (SDGs) are also presented in this introduction. The first three chapters after the introduction covers composting from the solid waste management and its policy aspects, taking examples from three developing countries. The next three examples are mostly about the benefits composting can provide to the soil and agriculture. These examples are also from three developing countries, but with a mixture of urban as well as rural settings. Last three chapters present more insight into the latest developments taking examples from Europe, as well as new methods adapted from the traditional styles from Africa.
Publisher: Springer Nature
ISBN: 3030362833
Category : Technology & Engineering
Languages : en
Pages : 236
Book Description
Organic waste composting is another excellent example to demonstrate the power and the benefits of nexus thinking. Even though organic waste composting itself is not a new topic, those who want to start a new project or align an ongoing project with nexus thinking, find it difficult to gather the necessary information. With nine case studies from four continents, this book aims to fill above gap in literature. While current literature on composting is often found to be limited to either soil/agriculture sector or waste management sector, this book presents a combined point of view. This open access book starts with an introductory chapter that describes the need to bring the waste management aspects and soil nutrient management aspects of compost production into one integrated theme. The relevance of nexus thinking and the Sustainable Development Goals (SDGs) are also presented in this introduction. The first three chapters after the introduction covers composting from the solid waste management and its policy aspects, taking examples from three developing countries. The next three examples are mostly about the benefits composting can provide to the soil and agriculture. These examples are also from three developing countries, but with a mixture of urban as well as rural settings. Last three chapters present more insight into the latest developments taking examples from Europe, as well as new methods adapted from the traditional styles from Africa.
Handbook of Biomass Valorization for Industrial Applications
Author: Shahid ul-Islam
Publisher: John Wiley & Sons
ISBN: 1119818796
Category : Science
Languages : en
Pages : 555
Book Description
HANDBOOK of BIOMASS VALORIZATION for INDUSTRIAL APPLICATIONS The handbook provides a comprehensive view of cutting-edge research on biomass valorization, from advanced fabrication methodologies through useful derived materials, to current and potential application sectors. Industrial sectors, such as food, textiles, petrochemicals and pharmaceuticals, generate massive amounts of waste each year, the disposal of which has become a major issue worldwide. As a result, implementing a circular economy that employs sustainable practices in waste management is critical for any industry. Moreover, fossil fuels, which are the primary sources of fuel in the transportation sector, are also being rapidly depleted at an alarming rate. Therefore, to combat these global issues without increasing our carbon footprint, we must look for renewable resources to produce chemicals and biomaterials. In that context, agricultural waste materials are gaining popularity as cost-effective and abundantly available alternatives to fossil resources for the production of a variety of value-added products, including renewable fuels, fuel components, and fuel additives. Handbook of Biomass Valorization for Industrial Applications investigates current and emerging feedstocks, as well as provides in-depth technical information on advanced catalytic processes and technologies that enable the development of all possible alternative energy sources. The 22 chapters of this book comprehensively cover the valorization of agricultural wastes and their various uses in value-added applications like energy, biofuels, fertilizers, and wastewater treatment. Audience The book is intended for a very broad audience working in the fields of materials sciences, chemical engineering, nanotechnology, energy, environment, chemistry, etc. This book will be an invaluable reference source for the libraries in universities and industrial institutions, government and independent institutes, individual research groups, and scientists working in the field of valorization of biomass.
Publisher: John Wiley & Sons
ISBN: 1119818796
Category : Science
Languages : en
Pages : 555
Book Description
HANDBOOK of BIOMASS VALORIZATION for INDUSTRIAL APPLICATIONS The handbook provides a comprehensive view of cutting-edge research on biomass valorization, from advanced fabrication methodologies through useful derived materials, to current and potential application sectors. Industrial sectors, such as food, textiles, petrochemicals and pharmaceuticals, generate massive amounts of waste each year, the disposal of which has become a major issue worldwide. As a result, implementing a circular economy that employs sustainable practices in waste management is critical for any industry. Moreover, fossil fuels, which are the primary sources of fuel in the transportation sector, are also being rapidly depleted at an alarming rate. Therefore, to combat these global issues without increasing our carbon footprint, we must look for renewable resources to produce chemicals and biomaterials. In that context, agricultural waste materials are gaining popularity as cost-effective and abundantly available alternatives to fossil resources for the production of a variety of value-added products, including renewable fuels, fuel components, and fuel additives. Handbook of Biomass Valorization for Industrial Applications investigates current and emerging feedstocks, as well as provides in-depth technical information on advanced catalytic processes and technologies that enable the development of all possible alternative energy sources. The 22 chapters of this book comprehensively cover the valorization of agricultural wastes and their various uses in value-added applications like energy, biofuels, fertilizers, and wastewater treatment. Audience The book is intended for a very broad audience working in the fields of materials sciences, chemical engineering, nanotechnology, energy, environment, chemistry, etc. This book will be an invaluable reference source for the libraries in universities and industrial institutions, government and independent institutes, individual research groups, and scientists working in the field of valorization of biomass.
Biodegradable Polymers, Blends and Biocomposites
Author: A. Arun
Publisher: CRC Press
ISBN: 1040113206
Category : Technology & Engineering
Languages : en
Pages : 341
Book Description
Biobased biodegradable polymers are emerging as an alternative to fossil fuel-based plastics. Biodegradable Polymers, Blends and Biocomposites: Trends and Applications discusses trends in the development of microbial/other renewable source-based bioplastic products, their blends and biocomposites applications in various industrial fields. It covers biodegradable polymeric materials preparation, extraction, formulation, modification of properties, product development and applications and end-of-life options. Furthermore, the book discusses topics like bioplastic resources, isolation procedures, utilization at commercial level and markets and economy. Features: Explains emerging application possibilities of biobased biodegradable polymers. Provides detailed application notes on agricultural waste-based bioplastics. Covers microbial and agro-based biocomposites and their applications. Summarizes bioplastic degradation and blending research. Discusses application possibilities of biobased biodegradable polymers. The book is aimed at researchers and graduate students in polymers and composites.
Publisher: CRC Press
ISBN: 1040113206
Category : Technology & Engineering
Languages : en
Pages : 341
Book Description
Biobased biodegradable polymers are emerging as an alternative to fossil fuel-based plastics. Biodegradable Polymers, Blends and Biocomposites: Trends and Applications discusses trends in the development of microbial/other renewable source-based bioplastic products, their blends and biocomposites applications in various industrial fields. It covers biodegradable polymeric materials preparation, extraction, formulation, modification of properties, product development and applications and end-of-life options. Furthermore, the book discusses topics like bioplastic resources, isolation procedures, utilization at commercial level and markets and economy. Features: Explains emerging application possibilities of biobased biodegradable polymers. Provides detailed application notes on agricultural waste-based bioplastics. Covers microbial and agro-based biocomposites and their applications. Summarizes bioplastic degradation and blending research. Discusses application possibilities of biobased biodegradable polymers. The book is aimed at researchers and graduate students in polymers and composites.
Accelerating the Transition to a Hydrogen Economy
Author: Tonni Agustiono Kurniawan
Publisher: Elsevier
ISBN: 0443140383
Category : Science
Languages : en
Pages : 474
Book Description
Accelerating the Transition to a Hydrogen Economy: Achieving Carbon Neutrality provides a guide to the transition to net zero carbon emissions through the hydrogen economy. Within the context of the Industrial Revolution 4.0, the book explores the implications of the hydrogen economy on the nexus of food-waste-energy and provides an overview of the impacts of the hydrogen economy on the energy industry. The book examines the role of the hydrogen economy in achieving net zero carbon emissions in the waste sector, methods for achieving decarbonization in different industries and parts of the economy, and the technologies that can achieve this. Each chapter provides a synopsis of the fundamental knowledge and latest developments to ensure readers of all experience levels and backgrounds can benefit from the book. Future perspectives and actionable next steps are suggested alongside case studies that provide a roadmap to decarbonization. - Evaluates the nexus of technology, society, environment, and economics for the hydrogen economy from the perspective of sustainability - Critically analyzes current and potential contributions of the hydrogen economy to net zero carbon emission - Offers insights to government and policymakers on how to support and accelerate the hydrogen economy for decarbonization
Publisher: Elsevier
ISBN: 0443140383
Category : Science
Languages : en
Pages : 474
Book Description
Accelerating the Transition to a Hydrogen Economy: Achieving Carbon Neutrality provides a guide to the transition to net zero carbon emissions through the hydrogen economy. Within the context of the Industrial Revolution 4.0, the book explores the implications of the hydrogen economy on the nexus of food-waste-energy and provides an overview of the impacts of the hydrogen economy on the energy industry. The book examines the role of the hydrogen economy in achieving net zero carbon emissions in the waste sector, methods for achieving decarbonization in different industries and parts of the economy, and the technologies that can achieve this. Each chapter provides a synopsis of the fundamental knowledge and latest developments to ensure readers of all experience levels and backgrounds can benefit from the book. Future perspectives and actionable next steps are suggested alongside case studies that provide a roadmap to decarbonization. - Evaluates the nexus of technology, society, environment, and economics for the hydrogen economy from the perspective of sustainability - Critically analyzes current and potential contributions of the hydrogen economy to net zero carbon emission - Offers insights to government and policymakers on how to support and accelerate the hydrogen economy for decarbonization
Valorization of Biomass to Bioproducts
Author: Vijai Kumar Gupta
Publisher: Elsevier
ISBN: 0128228881
Category : Technology & Engineering
Languages : en
Pages : 280
Book Description
Valorization of Biomass to Bioproducts: Organic Acids and Biofuels focuses on recent technological developments and related challenges surrounding the bioprocessing of biomass for important organic acids and biofuels (waste to energy) for industrial applications. Chapters present information on biomass as a source for fermentation to produce important organic acids and next generation biofuels. Additionally, the book includes chapters on the role of synthetic/systems biology and metabolic engineering in producing these valuable biomolecules of industrial interest. Consolidates the most recent research on the developments of organic acids from biomass Highlights the applications of organic acids across various industries Discusses a wide range of biotechnologies for biofuel production Covers recent challenges in biomass to biofuels and lifecycle analysis
Publisher: Elsevier
ISBN: 0128228881
Category : Technology & Engineering
Languages : en
Pages : 280
Book Description
Valorization of Biomass to Bioproducts: Organic Acids and Biofuels focuses on recent technological developments and related challenges surrounding the bioprocessing of biomass for important organic acids and biofuels (waste to energy) for industrial applications. Chapters present information on biomass as a source for fermentation to produce important organic acids and next generation biofuels. Additionally, the book includes chapters on the role of synthetic/systems biology and metabolic engineering in producing these valuable biomolecules of industrial interest. Consolidates the most recent research on the developments of organic acids from biomass Highlights the applications of organic acids across various industries Discusses a wide range of biotechnologies for biofuel production Covers recent challenges in biomass to biofuels and lifecycle analysis