GREEN ENGINEERING:ENVIRONMENTALLY CONSCIOUS DESIGN OF CHEM. PROCESSES DAVID T.ALLEN,DAVID R.SHONNARD Księgarnia

Features

Comprehensive review of environmental issues and regulations.
- Allows students to begin working within the context of the real-world restrictions and limitations that must guide their decisions in developing chemical processes and products.
Systematic methods for incorporating the impact to the environment.
- Teaches students that chemical process and product designs must coexist within a larger global context.
Compilation of current strategies for preventing pollution and reducing waste-At the molecular, unit operations, and process/facility levels.
- Offers students effective means of evaluating the emissions and hazards of chemicals and processes.
Life Cycle Assessment (LCA) and Industrial Ecology.
- Allows students to assess the impact of chemical processes and products beyond the boundaries of the plant.
Cost implications of environmental issues and problems.
- Allows students to understand the effect of their designs on the real world.
Additional support online-At the green engineering web site.
- Provides up-to-date resources for greater understanding and learning.

Preface

Chemical processes provide a diverse array of valuable products and materials used in applications ranging from health care to transportation and food processing. Yet these same chemical processes that provide products and materials essential to modern economies also generate substantial quantities of wastes and emissions. Managing these wastes costs tens of billions of dollars each year, and as emission and treatment standards continue to become more stringent, these costs will continue to escalate. In the face of rising costs and increasingly stringent performance standards, traditional end-of-pipe approaches to waste management have become less attractive and a strategy variously known as environmentally conscious manufacturing, eco-efficient production, or pollution prevention has been gaining prominence. The basic premise of this strategy is that avoiding the generation of wastes or pollutants can often be more cost effective and better for the environment than controlling or disposing of pollutants once they are formed.

The intent of this textbook is to describe environmentally preferable or "green" approaches to the design and development of processes and products. The idea of writing this textbook was conceived in 1997 by the staff of the Chemical Engineering Branch (CEB), Economics, Exposure and Technology Division (EETD), Office of Pollution Prevention and Toxics (OPPT) of the US EPA. In 1997, OPPT staff found that, although there was a growing technical literature describing "green" approaches to chemical product and process design, and a growing number of university courses on the subject, there was no standard textbook on the subject area of green engineering.

So, in early 1998, OPPT initiated the Green Engineering Project with the initial goal of producing a text describing "green" design methods suitable for inclusion in the chemical engineering curriculum.

Years of work, involving extensive interaction between chemical engineering educators and EPA staff, have resulted in this text. The text presents the "green" engineering tools that have been developed for chemical processes and is intended for senior-level chemical engineering students. The text begins (Chapters 1-4) with a basic introduction to environmental issues, risk concepts, and environmental regulations. This background material identifies the types of wastes, emissions, material use, and energy use to determine the environmental performance of chemical processes and products. Once the environmental performance targets have been defined, the design of processes with superior environmental performance can begin. Chapters 5-12 describe tools for assessing and improving the environmental performance of chemical processes. The structure of the chapters revolves around a hierarchy of design, beginning with tools for evaluating environmental hazards of chemicals, continuing through unit operation and flowsheet analysis, and concluding with the economics of environmental improvement projects. The final section of the text (Chapters 13 and 14) describes tools for improving product stewardship and improving the level of integration between chemical processes and other material processing operations.

It is our hope that this text will contribute to the evolving process of environmentally conscious design.

Draft manuscripts of this text have been used in senior-level engineering elective and required courses at the University of Texas at Austin, Michigan Technological University, the University of South Carolina, and West Virginia University. It is suggested, in a typical semester, all of the material in the text is presented. Portions of the textbook have been and can be used in a number of other chemical engineering courses as well as other engineering or environmental policy courses.

Dr. David T. Allen, University of Texas, Austin
Dr. David R. Shonnard, Michigan Technological University, Houghton
Nhan T. Nguyen, U.S. Environmental Protection Agency, Washington D.C.

Table of Contents

Preface.
About the Authors.
Acknowledgments.
I. A CHEMICAL ENGINEER'S GUIDE TO ENVIRONMENTAL ISSUES AND REGULATIONS.

1. An Introduction To Environmental Issues.

Introduction. The Role of Chemical Processes and Chemical Products. An Overview of Major Environmental Issues. Global Environmental Issues. Air Quality Issues. Water Quality Issues. Ecology. Natural Resources. Waste Flows in the United States. Summary. References. Problems.
2. Risk Concepts.
Introduction. Description of Risk. Value of Risk Assessment in the Engineering Profession. Risk-Based Environmental Law. General Overview of Risk Assessment Concepts. Hazard Assessment. Dose-Response. Exposure Assessment. Risk Characterization. Summary. References. Problems.
3. Environmental Law and Regulations: From End-of-Pipe to Pollution Prevention.
Introduction. Nine Prominent Federal Environmental Statutes. Evolution of Regulatory and Voluntary Programs: From End-of-Pipe to Pollution Prevention. Pollution Prevention Concepts and Terminology. References. Problems.
4. The Roles and Responsibilities of Chemical Engineers.
Introduction. Responsibilities for Chemical Process Safety. Responsibilities for Environmental Protection. Further Reading in Engineering Ethics. References. Problems.
II. EVALUATING AND IMPROVING ENVIRONMENTAL PERFORMANCE OF CHEMICAL PROCESSES.

5. Evaluating Environmental Fate: Approaches based on chemical structure.
Introduction. Chemical and Physical Property Estimation. Estimating Environmental Persistence. Estimating Ecosystem Risks. Using Property Estimates to Estimate Environmental Fate and Exposure. Classifying Environmental Risks Based on Chemical Structure. References. Problems.
6. Evaluating Exposures.
Introduction. Occupational Exposures: Recognition, Evaluation, and Control. Exposure Assessment for Chemicals in the Ambient Environment. Designing Safer Chemicals. References. Problems.
7. Green Chemistry.
Green Chemistry. Green Chemistry Methodologies. Quantitative/Optimization-Based Frameworks for the Design of Green Chemical Synthesis Pathways. Green Chemistry Expert System Case Studies. Questions for Discussion. References. Problems.
8. Evaluating Environmental Performance During Process Synthesis.
Introduction. Tier 1 Environmental Performance Tools. Tier 2 Environmental Performance Tools. Tier 3 Environmental Performance Tools. References. Problems.
9. Unit Operations and Pollution Prevention.
Introduction. Pollution Prevention in Material Selection for Unit Operations. Pollution Prevention for Chemical Reactors. Pollution Prevention for Separation Devices. Pollution Prevention Applications for Separative Reactors. Pollution Prevention in Storage Tanks and Fugitive Sources. Pollution Prevention Assessment Integrated with HAZ-OP Analysis. Integrating Risk Assessment with Process Design-A Case Study. Questions for Discussion. References. Problems.
10. Flowsheet Analysis for Pollution Prevention.
Introduction. Process Energy Integration. Process Mass Integration. Case Study of a Process Flowsheet. Summary. References. Problems.
11. Evaluating the Environmental Performance of a Flowsheet.
Introduction. Estimation of Environmental Fates of Emissions and Wastes. Tier 3 Metrics for Environmental Risk Evaluation of Process Designs. Summary. References. Problems.
12. Environmental Cost Accounting.
Introduction. Definitions. Magnitudes of Environmental Costs. A Framework for Evaluating Environmental Costs. Hidden Environmental Costs. Liability Costs. Internal Intangible Costs. External Intangible Costs. References. Problems.

III. MOVING BEYOND THE PLANT BOUNDARY.

13. Life-Cycle Concepts, Product Stewardship, and Green Engineering.

Introduction to Product Life Cycle Concepts. Life-Cycle Assessment. Life-Cycle Impact Assessments. Streamlined Life-Cycle Assessments. Uses of Life-Cycle Studies. Summary. Questions for Discussion. References. Problems.
14. Industrial Ecology.

Introduction. Material Flows in Chemical Manufacturing. Eco-Industrial Parks. Assessing Opportunities for Waste Exchanges and Byproduct Synergies. Summary. References. Problems.

IV. APPENDICES.
A. Details Of The Nine Prominent Federal Environmental Statutes.
B. Molecular Connectivity.
C. Estimating Emissions From Storage Tanks.
D. Tables of Environmental Impact Potentials-Tables D-1 to D-.
E. Procedures for Estimating Hidden (Tier II) Costs-Tables E-1 to E-5.
F. Additional Resources-Web Resources/Online Databases/Software.
Index.

Companion Website - Allen
- www.prenhall.com/allen

This book is about pollution prevention and environmental risk reduction for chemical processes. This book is the result of the US EPA (Environmental Protection Agency) green engineering curriculum development effort for chemical engineering departments. The book was developed to fulfill ABET/AICHE requirements on environment, health and safety.

DAVID T. ALLEN, Reese Professor of Chemical Engineering and the Director of the Center for Energy and Environmental Resources at the University of Texas at Austin, was the 2000 recipient of the American Institute of Chemical Engineers Lawrence K. Cecil Award in Environmental Chemical Engineering for his contributions to air quality and pollution prevention engineering and environmental engineering education.

DAVID R. SHONNARD, Associate Professor of Chemical Engineering at Michigan Technological University, is a 1998 recipient of the NSF/Lucent Technologies Foundation Industrial Ecology Research Fellowship for research that integrates environmental impact assessment with process design. Other related awards include an NSF-funded repository for pollution prevention curriculum development materials.

With contributions by authors from US EPA and Industry.

Back Cover Copy

A chemical engineer's guide to managing and minimizing environmental impact.

Chemical processes are invaluable to modern society, yet they generate substantial quantities of wastes and emissions, and safely managing these wastes costs tens of millions of dollars annually. Green Engineering is a complete professional's guide to the cost-effective design, commercialization, and use of chemical processes in ways that minimize pollution at the source, and reduce impact on health and the environment. This book also offers powerful new insights into environmental risk-based considerations in design of processes and products.

First conceived by the staff of the U.S. Environmental Protection Agency, Green Engineering draws on contributions from many leaders in the field and introduces advanced risk-based techniques including some currently in use at the EPA. Coverage includes:

Engineering chemical processes, products, and systems to reduce environmental impacts
Approaches for evaluating emissions and hazards of chemicals and processes
Defining effective environmental performance targets
Advanced approaches and tools for evaluating environmental fate
Early-stage design and development techniques that minimize costs and environmental impacts
In-depth coverage of unit operation and flowsheet analysis
The economics of environmental improvement projects
Integration of chemical processes with other material processing operations
Lifecycle assessments: beyond the boundaries of the plant

Increasingly, chemical engineers are faced with the challenge of integrating environmental objectives into design decisions. Green Engineering gives them the technical tools they need to do so.

PTR Overview

Green Engineering is a complete professional's guide to the cost-effective design, commercialization, and use of chemical processes and products in ways that minimize pollution at the source, and reduce impact on health and the environment. It also offers powerful new insights into environmental risk-based considerations in design of processes and products.KEY TOPICS:First conceived by the staff of the US Environmental Protection Agency's Office of Pollution Prevention and Toxics, Green Engineering draws upon contributions from many leaders in the field, and introduces advanced risk-based techniques currently in use at the EPA. The book introduces sophisticated, early-stage design and development techniques that minimize pollution and cost. Professionals will learn how to define effective environmental performance targets; screen chemicals based on environmental fate, emissions, and risks; and assess the entire lifecycle of a chemical process, including events beyond the boundaries of the plant. The book offers in-depth coverage of unit operation and flowsheet analysis; advanced tools for evaluating environmental impacts; and realistic guidance for understanding the economics of environmental improvement projects.MARKET:For all engineers, managers, regulators, and other professionals concerned with managing and mitigating the environmental impact of chemical processes.

416 pages

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