Biochar from Pine cone (strobilus of Pinus elliottii) by torrefaction process: evaluation of the adsorptive and energy capacity
Journal of Thermal Analysis and Calorimetry(2023)
Abstract
Using biomass residues of any nature has gained more and more importance over time. In this work, the adsorptive and energetic capacity of biochar produced from a dry pine cone or strobilus residues of Pinus elliottii by torrefaction in the range of 200 and 300 ^∘ C was evaluated. Raw strobilus pellets (P0) and their biochars (P200 to P300) were produced by two distinct routes of obtaining and then assessed for integrity in the water, thermal stability by TG/DTG and DTA, and composition by proximate, ultimate analysis, and ATR-FTIR spectra. As for energy use, the HHV ranged from 18.5 to 22.3 MJ kg ^-1 from P0 to P300. In addition, other energy parameters such as mass and energy yields (MY and EY), enhancement factor (EF), energy-mass co-benefit index (EMCI), severity factor (SF), and torrefaction severity index (TSI) were evaluated. The reduction of MY from P200 to P260 was 14.4
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Key words
Biochar,Pine cone,Adsorptive capacity,Energy capacity,Isothermal models
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