Susunaga Miranda, M.A., Estévez Garrido, B.M., Ortíz Muñiz, B. and Susunaga Estévez, R.M. 2021. Removal of Heavy Metals (Cr+6, Ni, Zn) from Leachates of the Sanitary Landfill of the City of Veracruz, Mexico with Reactive Permeable Silica Sand Barriers. Enfoque UTE. 12, 3 (Jul. 2021), pp. 65 - 78. DOI:https://doi.org/10.29019/enfoqueute.756.