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Pollution prevention | Eliminating the problem

In the 1980s the chemical-engineering community began developing ways to eliminate the formation of pollutants early on in the production process. With this advance it was no longer necessary to rely on "end-of-pipe" treatments to make waste streams suitable for safe discharge into the environment.

Benign by design

Chemical engineers are regularly involved in the design and optimization of complex industrial operations, applying their engineering ingenuity to pollution prevention efforts. The objective is to develop techniques and processes that minimize or even eliminate the formation of unwanted by-products and hazardous pollutants—in other words, to make industrial operations "benign by design."

Chemical-engineering contributions to pollution prevention include:

 Improved engineering technologies and advanced machine designs that save raw material and energy,

 Higher-activity catalysts,

 Re-engineered processes designed for "closed-loop" and "zero-discharge" operation,

 Enhanced maintenance procedures,

 Advanced monitoring and diagnostic instrumentation,

 More efficient process control systems with less waste, and

Environmentally friendly, biodegradable solvents.

Prototypes like this computer-notebook fuel cell, which

produces electricity through a reaction with oxygen,

are conceived and created by chemical engineers.

Photo by Yoshikazu Tsuno/Getty Images.

Taken From: http://www.chemicalengineering.org/enviro/pollution.html

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