Journal Algérien des Régions Arides
Volume 18, Numéro 2, Pages 34-42
2025-07-01

Effect Of Temperature And Heating Rate On Date Palm Biochar Characterization



Authors : Mohammed Mesnoua . Benchikh Chawqi . Roumani Messaoud . Benouamane Ourida . Otman Tarek . Mizab Ouahiba . Remmani Rania .

Abstract

The role of biochar in improving soil fertility and carbon sequestration is widely recognized. To maximize its benefits in soil applications, it is essential to fully understand its physicochemical properties, which are largely shaped by the choice of feedstock and the specific pyrolysis conditions. This study focuses on analyzing and comparing the physicochemical properties of biochar obtained from date palm residues via slow pyrolysis. The biochar was generated at three distinct pyrolysis temperatures; 400°C, 550°C, and 700°C and under two heating rates: fast (130°C min⁻¹) and slow (13°C min⁻¹). Increasing the pyrolysis temperature resulted in higher concentrations of fixed carbon, ash content, pH, electrical conductivity, and inorganic minerals such as potassium (K), sodium (Na), and calcium (Ca), while simultaneously reducing the biochar yield and volatile matter content. Conversely, raising the heating rate led to an increase in fixed carbon, ash, volatile matter, pH, and mineral elements (Na, Cl, Ca), though the yield, sodium, potassium, and electrical conductivity decreased. The results of this study elucidate the relationship between pyrolysis conditions and the properties of biochar derived from date palm residues. By optimizing pyrolysis parameters, biochar with enhanced attributes can be developed, offering significant potential for environmental management in arid regions, a crucial advancement toward sustainability.

Keywords

Phoenix dactylifera L ; date palm residues ; Biochar analysis ; slow pyrolysis ; Lignocellulose

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