Sugarcane Biochar for Agricultural Use Produced in Different Conditions of Pyrolysis
Juliany Barbosa de Pinho, Aloisio Bianchini, Pedro Silvério Xavier Pereira, Letycia Cunha Nunes, Rodrigo Fernandes Daros, Josilaine Gonçalves da Silva, Dione Aparecido Castro
Journal of Experimental Agriculture International · pp. 1–8 · Published 5 Jul 2019
10.9734/jeai/2019/v38i430307Abstract
From the pyrolysis process, biochar is a carbon rich and recalcitrant organic material with potential for long term carbon sequestration because of its aromatic structure. However, the physical and chemical properties of the biochar vary due to the diversity of raw material and the conditions of production. The present study aimed to evaluate the biochar from the sugarcane bagasse at different temperatures and under two conditions of pyrolysis. The biochar was produced at two final temperatures 200°C (1 hour); 250°C (1h) and 250°C (2h), with pyrolysis of an oxidizing and non-oxidizing atmosphere for both. PH, cation exchange capacity (CTC), carbon content (C), Nitrogen (N), hydrogen (H), H:C, C:N and ash ratios were evaluated. The contents of C, H, N and the atomic ratios H:C and C:N were higher in Biochar produced in a non-oxidizing atmosphere (BNO). However, the content of ash, pH and CTC were higher in Biochar produced in oxidizing atmospheres (BO). One can conclude the direct influence of the pyrolysis condition.
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