The environmental impact of industrial waste is one of the most serious challenges facing the chemical process industries. From a focus on end-of-pipe treatment in the 1970s, chemical manufacturers have increasinglyimplemented pollution prevention policies in which pollutants are mitigated at the source or separated and recovered and then reused or sold. This book is the first to present systematic techniques for cost-effective pollution prevention, altering what has been an art that depends on experience and subjective opinion into a science rooted in fundamental engineering principles and pr.