Azabache Liza Y.F., Centurion Tapia F., Rodriguez Espinoza R.F., Julca Urquiza R., Layza Castaneda R.R., Pinedo Canta J.J., Quintanilla Morales L.K., Quispe Burga B.L., 2021, Study of Coffee Husk (coffea Arabica L.) Activated Carbon in the Treatment of Aquifer Water: Adsorption of Turbidity, Colour and Metals (iron-manganese), Chemical Engineering Transactions, 89, 655-660.