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Evaporation tests were also run in a laboratory simple distillation set (Fig. 2) in which feed (600 ml) with the same composition in the aroma compounds as in the absorption–distillation experiments was used. The results of these tests are reported as simple distillation runs.
Additional experiments were run in the apparatus shown in Fig. 2 in which 52% LiBr solution containing the same amount of the aroma compounds as in the simple distillation runs and the absorption–distillation runs was distilled. These experiments are reported as LiBr reference distillation runs.