Characterization of Biochar Samples of Banana Peels and Orange Bagasse Carbonized at 400 and 600°C

Biochar is a product of the pyrolysis of organic waste with potential use in agriculture. Its use depends on its physico-chemical properties, which vary according to the biomass and the pyrolysis process. Agroindustry that processing oranges and bananas generate a large amount of residues. We produced biochars from banana peels and orange bagasse with pyrolysis at 400 and 600 degrees C. The results showed a variation of properties as a function of the biomass and the pyrolysis temperature. All biochars showed alkaline pH. The banana peels biochars present high ash values and electrical conductivity. The carbon contents varies between 50-60%. The Cu contents limited the agricultural use, as well as the naphthalene content in the bagasse orange biochar at 600 degrees C. Further studies on agronomic advantages and risks of the use of these biochars in tropical soils are needed.