Waste management of wood products in life cycle assessment
P Esser, P Eggels, A Voss
Within the framework of the European project LIFE SYS WOOD (contractnr. FAIR CT95-7026) TNO has performed a study on the waste management of wood demolition waste for inclusion in Life Cycle Assessment. In LIFE SYS WOOD one of the main aims was to develop a consistent LCA methodology for wood products. LCA case studies have been performed by partners on wood as raw material, glulam contructions, OSB and plywood roof constructions, window frames, a CCA-treated fence and multi-layer parquet flooring. For the relevant European countries involved contributions to this study of all research partners (EMPA, Imperial College, NTI, Traetek and VTT) have been included, on the composition of the wood waste, on the state of the art of waste management techniques and regulations, and the estimated mix of waste treatment options. The approach in consistently handling final waste management of wood products in LCA and some results are summarised in this paper. For several wood products it has been concluded, that the waste stage has a very significant impact on the LCA results.