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Pure Appl. Chem., Vol. 72, No. 7, pp. 1247-1252, 2000.

Special Topic Issue on Green Chemistry

 

Use of the life-cycle assessment (LCA) toolbox for an environmental evaluation of production processes

Monika Herrchen and Werner Klein

Fraunhofer-Institute for Environmental Chemistry and Ecotoxicology, D-57392 Schmallenberg, Germany

Abstract: Green chemistry not only emphasizes the central production process of the "green" chemical, but it ultimately requires a life-cycle conceptual approach for each chemical product. A life-cycle conceptual approach comprises the consideration of all stages along the life cycle of a chemical (i.e., raw material extraction, pre-production, production, use, recycling, and disposal) as well as the consideration of environmental impacts caused by by-products and auxiliaries (such as solvents and additives, but also technical facilities which have to be provided to produce the green chemical). A significant improvement in the evaluation of green chemical products can be approached by the complementary use of the methodologies of life-cycle assessment (LCA) and risk assessment. The use and combination of both methodologies can be performed by a separate use of the instruments (depending on the scope, definition, and application of LCA), an iterative use of LCA and risk assessment, or a complete integration of both instruments. Pros and cons of these approaches are discussed.

 

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