Biomethanization of the Organic Fraction of Municipal Solid Wastes


Book Description

Biomethanization of the Organic Fraction of Municipal Solid Wastes is a comprehensive introduction to both the fundamentals and the more practical aspects of the anaerobic digestion of organic solid wastes, particularly those derived from households, that is, the organic fraction of municipal solid wastes (OFMSW). It can be used as a textbook for specialized courses and also as a guide for practitioners. In the first part, the book covers the relevant aspects of anaerobic digestion (AD) of organic wastes. The fundamentals and kinetic aspects of AD are reviewed with particular emphasis on the aspects related to solid wastes. This introduction is necessary to have a comprehensive view of the AD process and to understand the practical principles as well as the origin of possible problems arising from the management of the process. Chapter 2 emphasizes the role of kinetics in designing the reactor, paying special attention to existing models, particularly the dynamic ones. Through this introduction, it is intended to facilitate the technology transfer from laboratory or pilot plant experiences to full-scale process, in order to implement improvements in current digesters. Laboratory methods are described for the analysis and optimization of reactor performance, such as methanogenic activity tests or experimental evaluation of the biodegradation kinetics of solid organic waste. The different reaction patterns applied to industrial reactors are outlined. Industrial reactors are classified in accordance with the system they use, pointing out advantages and limitations. Co-digestion, enabling the co-treatment of organic wastes of different origin in a more economically feasible way, is described in detail. Examples of co-digestion are given, with OFMSW as a base-substrate. Finally, full-scale co-digestion plants are discussed. Various types (mechanical, biological, physico-chemical) of pre-treatment to increase the biodegradability, and thus the yields of the process, are reviewed in detail. The use of the fermentation products of anaerobic digesters for biological nutrient removal processes in wastewater treatment plants is described. This constitutes an example of integrated waste management, a field in which both economic and technical advances can be achieved. Balances are given to justify the approach, and a full-scale case study is presented. The important topic of economics and the ecological advantages of the process are emphasized. The use of compost, the integration with composting technology, and advantages over other technologies are detailed in the framework of an environmental impact assessment of biowaste treatment. Finally, the anaerobic digestion of MSW in landfills is reviewed in detail, with emphasis on landfill process enhancement and strategies for its application.







Municipal Solid Wastes


Book Description

Environmental scientists and engineers are faced with the challenge of how to manage increasing amounts of solid waste. Furthermore, waste management officials are constantly faced with the question "Which option is the most appropriate one in this situation, and how does it compare to other options?" For these individuals, and for the general public, Municipal Solid Wastes: Problems and Solutions helps to answer this and other questions by presenting the issues of waste handling and disposal-from general management concepts to specific techniques. Each topic is carefully reviewed: problems are presented, and possible solutions are discussed. Legislation that affects recycling and disposal is covered.




Municipal Solid Waste


Book Description

Solid waste has grown into a relatively difficult problem to solve for those responsible for its management; these responsibilities include the collection, transport, treatment, and disposal of solid wastes, particularly wastes generated in medium and large urban centres. This problem is even more intense in economically developing countries, where the financial, human, and other critical resources are scarce in general. In the last decade, there has been a great interest and awareness regarding the environmentally safe management of waste worldwide, centralised in legislative, administrative, standardisation, and research activities in this field. Therefore, it is essential to develop short- and long-term waste management strategies (often named the 3Rs) and their consequent implementation in compliance with the formulated priorities for waste: (1) Reduce, (2) Recycle, (3) Reuse and (4) environmentally safe disposal. Several contradictions and lack of agreement still exist, even regarding the major basic definitions, e.g., which material should be treated as "waste" and which as a "beneficial raw material", which wastes are "hazardous" and which are "non-hazardous", etc. Quite often, different approaches and as a consequence, waste management/disposals are adopted for the same situation/materials. Environmental risk assessment procedures and mode of actions are varied greatly not only within national levels, but also at regional levels within the same country by different groups of scientists and/or policy makers. The general idea of the book has arisen from the mutual experience of many specialists in numerous disciplines from different countries involved in the problem of environmental assessment, economic and monitoring approaches, and control approaches for chemicals generated from solid waste disposal. Solid waste worldwide issues nowadays reflect the complexity and unbalanced development of our world at the beginning of the 21st century. This book covers a broad group of wastes, from biowaste to hazardous waste. The contributors to the book are recognised experts in the diverse fields associated with the issues of waste management and the reuse-recycle of materials, and are from different parts of the world. Authors present their experience and approaches considering both international and national/local specifics. The book is addressed to the wide range of end-users, decision-makers and professionals involved in environmental and agricultural issues: administration, designers, manufacturers, policy makers, farmers, researchers, academics and university students, and is focused on waste properties, environmental behaviour and management in an environmentally safe way. It was not the intention of the editor/authors to exhaust the subject, which is intensely broad, but to give a general idea with updating trends in the field of solid waste management concerning disposal, monitoring, assessment and remedial options, which are demonstrated also in case studies. The authors hope that this book to some extent will contribute to the trials and efforts for the proper, environmentally safe practices of solid waste disposal, and will provide state-of-the-art information and discussion, monitoring strategies, advanced approaches and methods, techniques and equipment for environmentally safe disposal and remediation of solid wastes.




Gone Tomorrow


Book Description

“A galvanizing exposé” of America’s trash problem from plastic in the ocean to “wasteful packaging, bogus recycling, and flawed landfills and incinerators” (Booklist, starred review). Eat a take-out meal, buy a pair of shoes, or read a newspaper, and you’re soon faced with a bewildering amount of garbage. The United States is the planet’s number-one producer of trash. Each American throws out 4.5 pounds daily. But garbage is also a global problem. Today, the Pacific Ocean contains six times more plastic waste than zooplankton. How did we end up with this much rubbish, and where does it all go? Journalist and filmmaker Heather Rogers answers these questions by taking readers on a grisly and fascinating tour through the underworld of garbage. Gone Tomorrow excavates the history of rubbish handling from the nineteenth century to the present, pinpointing the roots of today’s waste-addicted society. With a “lively authorial voice,” Rogers draws connections between modern industrial production, consumer culture, and our throwaway lifestyle (New York Press). She also investigates the politics of recycling and the export of trash to poor countries, while offering a potent argument for change. “A clear-thinking and peppery writer, Rogers presents a galvanizing exposé of how we became the planet’s trash monsters. . . . [Gone Tomorrow] details everything that is wrong with today’s wasteful packaging, bogus recycling, and flawed landfills and incinerators. . . . Rogers exhibits black-belt precision.” —Booklist, starred review




Municipal Solid Waste to Energy Conversion Processes


Book Description

MUNICIPAL SOLID WASTE TO ENERGY CONVERSION PROCESSES A TECHNICAL AND ECONOMIC REVIEW OF EMERGING WASTE DISPOSAL TECHNOLOGIES Intended for a wide audience ranging from engineers and academics to decision-makers in both the public and private sectors, Municipal Solid Waste to Energy Conversion Processes: Economic, Technical, and Renewable Comparisons reviews the current state of the solid waste disposal industry. It details how the proven plasma gasification technology can be used to manage Municipal Solid Waste (MSW) and to generate energy and revenues for local communities in an environmentally safe manner with essentially no wastes. Beginning with an introduction to pyrolysis/gasification and combustion technologies, the book provides many case studies on various waste-to-energy (WTE) technologies and creates an economic and technical baseline from which all current and emerging WTE technologies could be compared and evaluated. Topics include: Pyrolysis/gasification technology, the most suitable and economically viable approach for the management of wastes Combustion technology Other renewable energy resources including wind and hydroelectric energy Plasma economics Cash flows as a revenue source for waste solids-to-energy management Plant operations, with an independent case study of Eco-Valley plant in Utashinai, Japan Extensive case studies of garbage to liquid fuels, wastes to electricity, and wastes to power ethanol plants illustrate how currently generated MSW and past wastes in landfills can be processed with proven plasma gasification technology to eliminate air and water pollution from landfills.




Waste Incineration and Public Health


Book Description

Incineration has been used widely for waste disposal, including household, hazardous, and medical wasteâ€"but there is increasing public concern over the benefits of combusting the waste versus the health risk from pollutants emitted during combustion. Waste Incineration and Public Health informs the emerging debate with the most up-to-date information available on incineration, pollution, and human healthâ€"along with expert conclusions and recommendations for further research and improvement of such areas as risk communication. The committee provides details on: Processes involved in incineration and how contaminants are released. Environmental dynamics of contaminants and routes of human exposure. Tools and approaches for assessing possible human health effects. Scientific concerns pertinent to future regulatory actions. The book also examines some of the social, psychological, and economic factors that affect the communities where incineration takes place and addresses the problem of uncertainty and variation in predicting the health effects of incineration processes.




Waste Management Practices


Book Description

A practical guide for the identification and management of a range of hazardous wastes, Waste Management Practices: Municipal, Hazardous, and Industrial integrates technical information including chemistry, microbiology, and engineering, with current regulations. Emphasizing basic environmental science and related technical fields, the book is an i




Municipal Solid Waste Management


Book Description

Rapid population growth, high standards of living, and technological development are constantly increasing the diversity and quantity of solid waste. The production of solid municipal waste associated with the high proportion of organic waste and its improper disposal lead to considerable environmental pollution due to the emission of greenhouse gases such as methane, carbon dioxide, etc. In such a challenging environment, municipal authorities need to develop more effective solutions to manage the growing urban solid waste. Most of the municipal solid waste mainly constitutes degradable materials, which represent a significant role in greenhouse gas emissions in urban localities. Integrated solid waste management approaches must be developed and improved to manage the increasing organic fractions of municipal solid waste, which helps to reduce greenhouse emissions with potential economic benefits. A sustainable management of municipal solid waste systems constitutes a promising and attractive trend to study current consumption behaviors responsible for waste generation, and to protect the global ecosystem. This book presents the management of municipal of solid waste, including recycling and landfill technologies. Moreover, composition and types of waste will be investigated. As a result, the most appropriate and feasible scenarios for the management of municipal solid waste are presented to provide the respected readership with the scientific background for sustainable development in these processes, which are increasingly supported by innovative methodologies for holistic assessment of process sustainability.




What a Waste 2.0


Book Description

Solid waste management affects every person in the world. By 2050, the world is expected to increase waste generation by 70 percent, from 2.01 billion tonnes of waste in 2016 to 3.40 billion tonnes of waste annually. Individuals and governments make decisions about consumption and waste management that affect the daily health, productivity, and cleanliness of communities. Poorly managed waste is contaminating the world’s oceans, clogging drains and causing flooding, transmitting diseases, increasing respiratory problems, harming animals that consume waste unknowingly, and affecting economic development. Unmanaged and improperly managed waste from decades of economic growth requires urgent action at all levels of society. What a Waste 2.0: A Global Snapshot of Solid Waste Management to 2050 aggregates extensive solid aste data at the national and urban levels. It estimates and projects waste generation to 2030 and 2050. Beyond the core data metrics from waste generation to disposal, the report provides information on waste management costs, revenues, and tariffs; special wastes; regulations; public communication; administrative and operational models; and the informal sector. Solid waste management accounts for approximately 20 percent of municipal budgets in low-income countries and 10 percent of municipal budgets in middle-income countries, on average. Waste management is often under the jurisdiction of local authorities facing competing priorities and limited resources and capacities in planning, contract management, and operational monitoring. These factors make sustainable waste management a complicated proposition; most low- and middle-income countries, and their respective cities, are struggling to address these challenges. Waste management data are critical to creating policy and planning for local contexts. Understanding how much waste is generated—especially with rapid urbanization and population growth—as well as the types of waste generated helps local governments to select appropriate management methods and plan for future demand. It allows governments to design a system with a suitable number of vehicles, establish efficient routes, set targets for diversion of waste, track progress, and adapt as consumption patterns change. With accurate data, governments can realistically allocate resources, assess relevant technologies, and consider strategic partners for service provision, such as the private sector or nongovernmental organizations. What a Waste 2.0: A Global Snapshot of Solid Waste Management to 2050 provides the most up-to-date information available to empower citizens and governments around the world to effectively address the pressing global crisis of waste. Additional information is available at http://www.worldbank.org/what-a-waste.