Hernández-Rodríguez, M., Otero-Calvis, A., Falcón-Hernández, J. and Yperman, Y. (2017) “Adsorption of NI (II) on activated Carbon of Coconut shell Chemicaly Modifieded with Acid Nitric Solutions”, Chemical Technology, 37(1), pp. 16-30. doi: 10.1590/2224-6185.2017.1.2.