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(T/MC249) Process Allocation performed on a Life Cycle Assessment of Cheese. Thuresson, Johanna1, Sonesson, Ulf1, Tillman, Anne-Marie2, 1 2 ABSTRACT- A Life Cycle Assessment (LCA) of cheese has been made in collaboration with Arla Foods Falkenberg, Sweden. Four different types of cheeses are produced at the dairy. By-products are cream, milk powder, whey powder and whey concentrates. Raw material used for the cheese-making process include milk, rennet, salt, water, calcium chloride and wax. LCA has been carried out for each one of the four cheese types produced. Data have been gathered from both suppliers and literature. Examples of data, collected for each step in the life cycle are incoming material, additives, waste, volume of product, energy consumption, transports and emissions. Two different allocation techniques have been evaluated during the performance of the LCA. Since the cheese dairy under study produces several cheeses and by-products, allocation of energy consumption and emissions has been made among the produced products. The first allocation has been made in co-operation with the staff at Falkenberg cheese dairy. Assumptions have been made of how much energy each product requires during the process of cheese-making. These numbers are translated into allocation figures and then used in the LCA calculations for the dairy. The other allocation technique used is based on the economical value of the products produced at the dairy. The results from the study using the different allocation techniques will be presented at the conference. Key words: life cycle assessment, lca, allocation, cheese |
