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Green Engineering: Environmentally Conscious Design of Chemical Processes by David R. Shonnard, David T. Allen

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Chapter 11Evaluating the Environmental Performance of a Flowsheet

byDavid R. Shonnard

11.1 Introduction

After the process flowsheet has been established and energy and mass efficiency measures have been applied (Chapter 10), it is appropriate for a detailed environmental impact evaluation to be performed. The end result of the impact evaluation will be a set of environmental metrics (indexes) which represent the major environmental impacts or risks of the entire process. A number of indexes are needed to account for potential damage to human health and to several important environmental media. The indexes can be used in several important engineering applications during process design, including the ranking of technologies, the optimizing of ...

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