- Written by Anna Strom
report from a Swedish national Forest Chemistry project, using existing technology for making plastics from petrochemicals.In terms of technology, the chemical industry at Stenungssund, Sweden, could make the switch today to a renewable raw material as a partial base for its production, according to a recent
However, for the industry to achieve a level of profitability when using wood or woody waste as feedstock comparable to that of using chemicals refined from fossil oil, political support measures similar to those in place for certain types of bioenergy production would be needed, the report authors from SP Processum and Chalmers Technical University say.
The research in Forest Chemistry focused on three tracks of the chemical-making operations: Production of butanol, olefins and methanol extracted from the sulphate process of pulping operations. An environmental impact assessment was performed by Bio4Energy researchers at the SP Technical Research Institute of Sweden in the form of a life-cycle assessment attempting to gauge the environmental and climatic impact of switching 25 per cent of the raw material base for the totality of the production at the industrial cluster to woody feedstock, as compared with a continued used of petrochemical feedstock.
"We have examined the preconditions both for processes in which cellulose-based ethanol and methanol made by gasification of raw materials from the forest are produced as starting materials from the production of chemicals and plastics. The project results show that it is feasible to use existing techniques, even if additional technological progress is welcome as it would make the processes more efficient.
"Looking at the technical side of things is very important since, in addition to bulk products, one could make high value-added products. There is good reason to continue the work, for instance on lignin products", according to Jönsson.
Bio4Energy’s LCA researchers on the project stressed the importance of assessing the sustainability of products coming out of the cluster along their collective value chain.