Methods for converting unsuitable saline lands into suitable soils using the “Coal Acid Utility Model”Makhbuba Ikramova, Bakhtiyor Rakhmatov, Inoyat Gaffarov and Beshim JallievE3S Web of Conf., 389 (2023) 04010DOI: https://doi.org/10.1051/e3sconf/202338904010