Exploring different methods for valorising oil shale ash into calcium and magnesium acetate de-icersMuldma, Kati; Mets, Birgit; Siirde, Andres; Umerenkova, Violetta; Lopp, Margus; Kaldas, KristiinaFuture Frontiers : PhD Conference on Emerging Technologies : Book of Abstracts2025 / p. 27 ; poster 18 https://tuit.ut.ee/sites/default/files/2025-05/PhD%20Conference%202025%20Book%20of%20Abstracts_pub3.pdf