*2.2.1 Banana peel*

The preparation of the biomass obtained from the banana peel was washed with ultrapure water, taken to the oven for drying at 70° C and ground by a SHOP63 01 industrial blender. After trituration the obtained product was sieved for Bertel granulometric analysis at 40 mesh.

#### *2.2.2 Rice husk*

The procedure for obtaining the rice husk biomass resembles the banana peel process. The rice husk was prepared by rinsing the husk with ultrapure water for the removal of particles, and was then taken to an oven at 70°C for 24 hours for drying. After drying, they were crushed in an electric mill and its product passed in a sieve for Bertel granulometric analysis with 40 mesh opening.

*Removal of Copper and Lead from Water in the Mariana Mining Disaster Using Biomass… DOI: http://dx.doi.org/10.5772/intechopen.99668*
