Umbarila-Ortega, M.F. et al. 2019. Sulfide removal using ozone as an oxidizing agent in tannery wastewater. Revista Facultad de Ingeniería. 28, 51 (Apr. 2019), 25–38. DOI:https://doi.org/10.19053/01211129.v28.n51.2019.9081.