Purpose The aim of this work is the evaluation and minimi- tion from bench to pilot scale induced a substantial reduction of zation, using a life cycle assessment approach, of the environ- the impacts on all the categories. On both scales, the analysis mental impacts of starch aerogel production on different scale made using midpoint categories showed that supercritical dry- plants. Aerogels are porous structures, which can be used as ing step strongly affected carcinogens and mineral extraction, carriers for delivery systems; they are obtained through a su- whereas alcogel production step strongly affected respiratory percritical drying. The impacts related to the production of 1 g organics. Solutions aimed at minimizing these impacts were of starch aerogel on two different scales (vessel internal vol- proposed. The performed analysis, using both midpoint and umes equal to 0.5 and 5.2 L) were evaluated and compared. endpoint categories, allowed to identify the aerogel production The environmental impacts on an industrial scale plant were weak points and propose improved solutions. Conclusions Global emissions related to starch aerogel pro- also simulated. Methods All the quantities related to materials, energy con- duction were lowered passing from bench scale to pilot scale. sumption and emissions to
The International Journal of Life Cycle Assessment – Springer Journals
Published: Jul 5, 2017
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