Environmental integrated production and recycling planning is of great
importance for the competitive position of production enterprises. Du
e to increasing disposal costs for industrial byproducts and waste as
well as stronger emission standards. companies will be required to set
up and control advanced, environmental friendly production technologie
s, so that emissions and byproducts will be reduced drastically. Nonav
oidable byproducts and used products at the end of their lifetime have
to be recycled by the producers. The complexity of the resulting deci
sion problems requires adequate. operations research methods. The foll
owing paper deals with the development of sophisticated operations res
earch models for two selected planning problems: recycling of industri
al byproducts and dismantling and recycling of products at the end of
their lifetime. The models have been applied successfully to large ind
ustrial problems in practice in the fields of recycling of demolition
waste in a German-French region and byproduct management in the steel
industry. The presentations of these two applications follow a case st
udy point of view.