Emissions Technologies

To achieve goals for climate and economic growth, "negative emissions technologies" (NETs) that remove and sequester carbon dioxide from the air will need to play a significant role in mitigating climate change. Unlike carbon capture and storage technologies that remove carbon dioxide emissions directly from large point sources such as coal power plants, NETs remove carbon dioxide directly from the atmosphere or enhance natural carbon sinks. Storing the carbon dioxide from NETs has the same impact on the atmosphere and climate as simultaneously preventing an equal amount of carbon dioxide from being emitted. Recent analyses found that deploying NETs may be less expensive and less disruptive than reducing some emissions, such as a substantial portion of agricultural and land-use emissions and some transportation emissions. In 2015, the National Academies published Climate Intervention: Carbon Dioxide Removal and Reliable Sequestration, which described and initially assessed NETs and sequestration technologies. This report acknowledged the relative paucity of research on NETs and recommended development of a research agenda that covers all aspects of NETs from fundamental science to full-scale deployment. To address this need, Negative Emissions Technologies and Reliable Sequestration: A Research Agenda assesses the benefits, risks, and "sustainable scale potential" for NETs and sequestration. This report also defines the essential components of a research and development program, including its estimated costs and potential impact.

An expert guide to emission control technologies and applications, Fossil Fuels Emissions Control Technologies provides engineers with a guide to link emission control strategies to available technologies, allowing them to choose the technology that best suits their individual need. This includes reduction technologies for Nitrogen Oxides, Sulfur Oxides, Mercury and Acid Gases. In this reference, the author explains the most critical control technologies and their application to real-world regulatory compliance issues. Numerous diagrams and examples emphasizing pollution formation mechanisms, key points in pollutant control, and design techniques are also included. Provides numerous diagrams and examples to emphasize pollution formation mechanisms Coverage of critical control technologies and their application to real-world solutions Explains Sulfur Oxides, Acid Gases, Nitrogen Oxides Formation and Organic HAPs, Control and Reduction Technologies Covers Particulate Matter and Mercury Emissions Formation and Reduction Technologies

As the rate at which climate change is increasing in making an impact to the planet, the need to develop and deploy technologies to reduce greenhouse gas (GHG) emissions becomes increasingly necessary. The United Nations' Sustainable Development Goal 13 (SDG 13) of reducing the effects of climate change would require ambitious actions and implementation towards achieving it. Negative emissions technologies (NETs) will contribute to this goal by reducing GHG concentrations in the atmosphere. Options for NETs are available for integration into energy and climate change policies. Barriers for large-scale implementation are present in each of these technologies; risks are present when it comes to integrating them into climate change mitigation strategies. In this paper, a novel multi-criteria decision analysis (MCDA) tool is developed for ranking and evaluating NETs under different risk levels. The tool is based on integrating the concept of neutrosophic sets into data envelopment analysis, or neutrosophic data envelopment analysis (NDEA) to examine the consequential effect of inefficiencies and uncertainties in the characteristics of different NETs. This considers a decoupled approach to the inherent efficiency, inefficiency, and uncertainty of each technology. A case study is presented to illustrate this tool. Results show the advantages of different NETs under different levels of expert's risk attitude and perception, i.e. tolerance factors. Soil carbon sequestration technology is efficient at tolerance levels from 60 % to 100 % as presented in the results. This can be an effective tool to select which technologies is appropriate in different scenarios.

Negative Emissions Technologies for Climate Change Mitigation provides a comprehensive introduction to the full range of technologies that are being researched, developed and deployed in order to transition from our current energy system, dominated by fossil fuels, to a negative-carbon emissions system. After an introduction to the challenge of climate change, the technical fundamentals of natural and engineered carbon dioxide removal and storage processes and technologies are described. Each NET is then discussed in detail, including the key elements of the technology, enablers and constraints, governance issues, and global potential and cost estimates. This book offers a complete overview of the field, thus enabling the community to gain a full appreciation of NETs without the need to seek out and refer to a multitude of sources. Covers the full spectrum of technologies to underpin the transition to a negative emissions energy system, from technical fundamentals to the current state of deployment and R&D Critically evaluates each technology, highlighting advantages, limitations, and the potential for large scale environmental applications Combines natural science and environmental science perspectives with the practical use of state-of-the-art technologies for sustainability

Fluidized bed (FB) combustion and gasification are advanced techniques for fuel flexible, high efficiency and low emission conversion. Fuels are combusted or gasified as a fluidized bed suspended by jets with sorbents that remove harmful emissions such as SOx. CO2 capture can also be incorporated. Fluidized bed technologies for near-zero emission combustion and gasification provides an overview of established FB technologies while also detailing recent developments in the field. Part one, an introductory section, reviews fluidization science and FB technologies and includes chapters on particle characterization and behaviour, properties of stationary and circulating fluidized beds, heat and mass transfer and attrition in FB combustion and gasification systems. Part two expands on this introduction to explore the fundamentals of FB combustion and gasification including the conversion of solid, liquid and gaseous fuels, pollutant emission and reactor design and scale up. Part three highlights recent advances in a variety of FB combustion and gasification technologies before part four moves on to focus on emerging CO2 capture technologies. Finally, part five explores other applications of FB technology including (FB) petroleum refining and chemical production. Fluidized bed technologies for near-zero emission combustion and gasification is a technical resource for power plant operators, industrial engineers working with fluidized bed combustion and gasification systems and researchers, scientists and academics in the field. Examines the fundamentals of fluidized bed (FB) technologies, including the conversion of solid, liquid and gaseous fuels Explores recent advances in a variety of technologies such as pressurized FB combustion, and the measurement, monitoring and control of FB combustion and gasification Discusses emerging technologies and examines applications of FB in other processes