Characterization of Used Lubricant Oil in a Latin-American Medium-Size City and Analysis of Options for Its Regeneration. - Sánchez-Alvarracín, Carlos; Criollo-Bravo, Jessica; Albuja-Arias, Daniela; García-Ávila, Fernando; Pelaez-Samaniego, M. Raúl (Recycling (MDPI AG), 2021)