environmental systems and processes

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Environmental Systems And Processes

Author : Walter J. Weber
ISBN : UOM:39015047292225
Genre : Nature
File Size : 58. 15 MB
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A rigorous and in-depth approach to environmental systems and processes Concern over environmental changes resulting from oversubscription and exploitation of Earth's resources is mounting. Acid rains from power generation and industrial process emissions to the atmosphere, contamination of water resources by spills and discharges of hazardous chemicals, the greenhouse and global warming effects of carbon dioxide generated by consumption of organic fuels, and the depletion of ecosystem stabilizers such as oxygen in lakes and streams overfertilized by human wastes; these are a few of the considerations facing environmental engineers and scientists today. These are complex and confounding processes and phenomena, and their effects vary widely among the virtually limitless number of environmental systems and subsystems on Earth. Environmental Systems and Processes: Principles, Modeling, and Design is the first book to explain that, although environmental systems are virtually limitless in number, change is controlled by a relatively small set of fundamental processes. Written by one of the initiators and foremost proponents of the "first principles" approach to environmental system characterization and problem solving, this informative volume details how three fundamental issues lie at the base of every environmental process; i.e., the amount and form of available energy, the rate at which that energy can be exercised, and the configuration and dynamics of the system in which the process occurs. The author demonstrates how the mastering of relatively few fundamental principles can provide the reader with the tools necessary to solve a broad range of environmental problems. Topics discussed in Environmental Systems and Processes: Principles, Modeling, and Design include: fluid flow and mass transport; passive and reactive interphase mass transfer; elementary and complex process rates; ideal, hybrid, and nonideal system modeling and design; and multiphase and interfacial process dynamics and design. The unique and highly effective format of presenting several simple but essential fundamentals first, followed by detailed illustrative examples and explanations of how these principles describe various complex specific environmental systems and processes, makes Environmental Systems and Processes: Principles, Modeling, and Design a requisite for environmental sciences and engineering classrooms, and a staple for the bookshelves of all environmental professionals.

Environmental Transport Processes

Author : Bruce E. Logan
ISBN : 9780470619599
Genre : Science
File Size : 56. 20 MB
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Developed as a reference for transport phenomena courses, this completely revised second edition of Environmental Transport Processes provides a readable and approachable treatment of environmental systems. The text features a unique combination of material from different fields (mass transport, kinetics, wastewater treatment, unit processes) and includes pertinent literature not available in any other texts. Rich with examples and problems to help reinforce students? learning, the updated edition addresses new and emerging topics, such as non-aqueous phase liquids (NAPLs), the subject of aggregates, and biofilm kinetic models merged with mass transport concepts.

Diffusion Processes In Environmental Systems

Author : J Crank
ISBN : 1349058270
Genre :
File Size : 39. 88 MB
Format : PDF
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Process Dynamics In Environmental Systems

Author : Walter J. Weber, Jr.
ISBN : 0471017116
Genre : Technology & Engineering
File Size : 68. 32 MB
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Providing a comprehensive analysis of the dynamic complexities of environmental systems—both natural and manmade—Process Dynamics in Environmental Systems is a unique, practical introduction to the issues and design mandates central to environmental engineering. An outgrowth of the classic text Physicochemical Processes for Water Quality Control, this new book amplifies and updates the important discussion of process dynamics begun in the original. Designed as a stand-alone reference to every aspect of process dynamics, the current book offers a complete theoretical analysis of the subject as well as numerous practical illustrations of how process models are useful in interpreting and designing a wide variety of process operations. Beginning with a broad overview of the factors and features of environmental systems and processes, the book then clearly details the general nature of fundamental processes, the character of the different types of systems in which they occur, and the way in which these factors influence process dynamics and environmental systems. The book then examines the core elements of process analysis—energetics, reaction rates, and reactor dynamics—and shows how process modeling integrates these elements in quantitative descriptions and in designs of engineered systems. Central to the structure of this book is a detailed analysis of the nature of reaction and transport phenomena—the two fundamental aspects of any environmental system. Including a look at reactions on both a macroscopic and microscopic scale, the book examines the mechanics of macroscopic and microscopic transport processes, outlining mass transport concepts basic to an understanding of reaction phenomena and reactor engineering. Subsequent chapters examine environmental reaction phenomena in the context of chemical species and transformations, including a discussion of energy balances and flows in both single-phase and multi-phase systems. A detailed look at the molecular basis for reaction kinetics in both single-phase and multi-phase systems follows. The book then broadens its focus to reactor dynamics, outlining engineering design considerations associated with reactor systems involving one phase; and then reactor systems involving transformations among and between components in two or more phases. A particularly unique feature of the book is its coverage of process dynamics for reactor systems in which transient conditions occur, at both the macroscopic and microscopic scales. A synthesis of the various aspects of process dynamics forms the book's conclusion, enabling the reader to skillfully apply the concepts of process dynamics to the interpretation and design of environmental systems. An ideal reference/handbook to the theory and uses of process dynamics, the book's practical, instructive format includes detailed example problems, assigned problems with answers, as well as suggested supplementary reading. Useful general appendices are provided, and many individual chapters also feature appendices which address issues specific to the chapter. Featuring a practical, forward looking approach to environmental systems design, Process Dynamics in Environmental Systems is a must for professionals and students interested in building the structures that preserve—and elevate—our quality of life. A blueprint to understanding and designing environmental systems...an authoritative text and handbook for the '90s and beyond Process dynamics is the science of quantifying and predicting the various components and phenomena underlying environmental systems. Designed as a comprehensive teaching text, reference, and study guide, Process Dynamics in Environmental Systems offers a complete theoretical analysis of process dynamics as well as numerous practical illustrations of how process models are useful in interpreting and designing a wide variety of process operations. Beginning with a broad overview of the factors and features of environmental systems and processes, the book then clearly details the general nature of fundamental processes, the character of the different types of systems in which they occur, and the way in which these factors influence process dynamics and environmental systems. The book then examines: The core elements of process analysis—energetics, kinetics, and reactor dynamics—and shows how process modeling integrates these into quantitative descriptions and the design of engineered systems The mechanics of macroscopic and microscopic transport processes Reaction rates in homogeneous and heterogeneous systems Engineering and design considerations associated with reactor systems involving one and two or more phases Reactor systems involving transient conditions at the macroscopic and/or microscopic scales The book's practical, instructive format includes detailed example problems, assigned problems with answers, as well as suggested supplementary reading.

Biophysical Chemistry Of Fractal Structures And Processes In Environmental Systems

Author : Nicola Senesi
ISBN : 9780470511190
Genre : Science
File Size : 85. 20 MB
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This book aims to provide the scientific community with a novel and valuable approach based on fractal geometry concepts on the important properties and processes of diverse environmental systems. The interpretation of complex environmental systems using modern fractal approaches is compared and contrasted with the more classical approaches. The book will provide the fundamental knowledge necessary for solving practical environmental problems. Furthermore, it examinea how the fractal approach has been applied in order to understand the structure and reactivity of natural, environmental systems including flocs, sediments, soils, microorganisms and humic substances.

Biophysico Chemical Processes Involving Natural Nonliving Organic Matter In Environmental Systems

Author : Nicola Senesi
ISBN : 0470494948
Genre : Science
File Size : 23. 53 MB
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An up-to-date resource on natural nonliving organic matter Bringing together world-renowned researchers to explore natural nonliving organic matter (NOM) and its chemical, biological, and ecological importance, Biophysico-Chemical Processes Involving Natural Nonliving Organic Matter in Environmental Systems offers an integrated view of the dynamics and processes of NOM. This multidisciplinary approach allows for a comprehensive treatment encompassing all the formation processes, properties, reactions, environments, and analytical techniques associated with the latest research on NOM. After briefly outlining the historical background, current ideas, and future prospects of the study of NOM, the coverage examines: The formation mechanisms of humic substances Organo-clay complexes The effects of organic matter amendment Black carbon in the environment Carbon sequestration and dynamics in soil Biological activities of humic substances Dissolved organic matter Humic substances in the rhizosphere Marine organic matter Organic matter in atmospheric particles In addition to the above topics, the coverage includes such relevant analytical techniques as separation technology; analytical pyrolysis and soft-ionization mass spectrometry; nuclear magnetic resonance; EPR, FTIR, Raman, UV-visible adsorption, fluorescence, and X-ray spectroscopies; and thermal analysis. Hundreds of illustrations and photographs further illuminate the various chapters. An essential resource for both students and professionals in environmental science, environmental engineering, water science, soil science, geology, and environmental chemistry, Biophysico-Chemical Processes Involving Natural Nonliving Organic Matter in Environmental Systems provides a unique combination of the latest discoveries, developments, and future prospects in this field.

Earth Systems

Author : Wallace Gary Ernst
ISBN : 0521478952
Genre : Science
File Size : 41. 66 MB
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Collecting the insightful teaching experiences of an internationally respected group of researchers and lecturers, this undergraduate textbook will impact the future development of environmental studies and earth system science. Integrating the principles of the natural sciences, engineering, and economics as they pertain to the global environment, Earth Systems: Processes and Issues explains the complex couplings and feedback mechanisms linking the geosphere, biosphere, hydrosphere, and atmosphere. This volume uniquely combines topics in the physical and life sciences with engineering environmental systems, regional case studies, and the economic implications of environmental public policy decisions. Fully integrated, it is an ideal textbook for a wide range of courses dealing with environmental issues, including earth and atmospheric science, environmental science, biological science, oceanography, geography, civil engineering, and social science. Each chapter includes a reading list of the most important references, and problem sets will encourage students to explore the subject further.

Environmental Systems Analysis With Matlab

Author : Stefano Marsili-Libelli
ISBN : 9781498706360
Genre : Mathematics
File Size : 72. 9 MB
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Explore the inner workings of environmental processes using a mathematical approach. Environmental Systems Analysis with MATLAB® combines environmental science concepts and system theory with numerical techniques to provide a better understanding of how our environment works. The book focuses on building mathematical models of environmental systems, and using these models to analyze their behaviors. Designed with the environmental professional in mind, it offers a practical introduction to developing the skills required for managing environmental modeling and data handling. The book follows a logical sequence from the basic steps of model building and data analysis to implementing these concepts into working computer codes, and then on to assessing their results. It describes data processing (rarely considered in environmental analysis); outlines the tools needed to successfully analyze data and develop models, and moves on to real-world problems. The author illustrates in the first four chapters the methodological aspects of environmental systems analysis, and in subsequent chapters applies them to specific environmental concerns. The accompanying software bundle is freely downloadable from the book web site. It follows the chapters sequence and provides a hands-on experience, allowing the reader to reproduce the figures in the text and experiment by varying the problem setting. A basic MATLAB literacy is required to get the most out of the software. Ideal for coursework and self-study, this offering: Deals with the basic concepts of environmental modeling and identification, both from the mechanistic and the data-driven viewpoint Provides a unifying methodological approach to deal with specific aspects of environmental modeling: population dynamics, flow systems, and environmental microbiology Assesses the similarities and the differences of microbial processes in natural and man-made environments Analyzes several aquatic ecosystems’ case studies Presents an application of an extended Streeter & Phelps (S&P) model Describes an ecological method to estimate the bioavailable nutrients in natural waters Considers a lagoon ecosystem from several viewpoints, including modeling and management, and more

Biophysico Chemical Processes Of Anthropogenic Organic Compounds In Environmental Systems

Author : Baoshan Xing
ISBN : 9781118002117
Genre : Science
File Size : 84. 12 MB
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In contrast to the classical books which largely focus on separate, individual physicochemical and biological aspects, this book aims to integrate the frontiers of knowledge on the fundamentals and the impact of physicochemical and biological interactions and processes of AOCs in soil, sediment, water and air. The specific objectives of this book are to address: (1) fundamental biophysico-chemical processes of AOCs in the environment, (2) occurrence and distribution of AOCs in air, water, and soil, and their global cycling, (3) the state-of-the-art analytical techniques of AOCs, and (4) restoration of natural environments contaminated by AOCs. The book also identifies the gaps in knowledge on the subject matter and as such provides future directions to stimulate scientific research to advance the chemical science on biophysico-chemical interfacial reactions in natural habitats. By virtue of complex nature of the interactions of AOCs with different environmental components and matrixes, no single available technique and instrument is satisfactory yet for determining their fate, transport, availability, and risk in the environment. In order to fully understand the biophysico-chemical interactions and processes of AOCs in the environment, it is critical to know chemical, physical and biological properties of AOCs and their analytical techniques. The book is unique because of its multidisciplinary approach as it provides a comprehensive and integrated coverage of biophysico-chemical reactions and processes of AOCs in various environments, associated analytical techniques, and restoration of natural environments contaminated by AOCs.

Environmental Process Analysis

Author : Henry V. Mott
ISBN : 9781118747599
Genre : Science
File Size : 64. 44 MB
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Enables readers to apply core principles of environmental engineering to analyze environmental systems Environmental Process Analysis takes a unique approach, applying mathematical and numerical process modeling within the context of both natural and engineered environmental systems. Readers master core principles of natural and engineering science such as chemical equilibria, reaction kinetics, ideal and non-ideal reactor theory, and mass accounting by performing practical real-world analyses. As they progress through the text, readers will have the opportunity to analyze a broad range of environmental processes and systems, including water and wastewater treatment, surface mining, agriculture, landfills, subsurface saturated and unsaturated porous media, aqueous and marine sediments, surface waters, and atmospheric moisture. The text begins with an examination of water, core definitions, and a review of important chemical principles. It then progressively builds upon this base with applications of Henry's law, acid/base equilibria, and reactions in ideal reactors. Finally, the text addresses reactions in non-ideal reactors and advanced applications of acid/base equilibria, complexation and solubility/dissolution equilibria, and oxidation/reduction equilibria. Several tools are provided to fully engage readers in mastering new concepts and then applying them in practice, including: Detailed examples that demonstrate the application of concepts and principles Problems at the end of each chapter challenging readers to apply their newfound knowledge to analyze environmental processes and systems MathCAD worksheets that provide a powerful platform for constructing process models Environmental Process Analysis serves as a bridge between introductory environmental engineering textbooks and hands-on environmental engineering practice. By learning how to mathematically and numerically model environmental processes and systems, readers will also come to better understand the underlying connections among the various models, concepts, and systems.

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