Effect of moisture content, particle size and pressure on some briquetting properties of hazelnut residues

Creative Commons License


Anadolu Tarım Bilimleri Dergisi, vol.35, no.3, pp.330-338, 2020 (Peer-Reviewed Journal) identifier


This study examined the utilization of residues from the production of hazelnuts as a source of biofuel. The residues were briquetted using a hydraulic briquetting machine with a horizontal course. Solid cylindrical briquettes were produced with two different compression pressures (P: 80 MPa and 160 MPa), moisture contents (M: 8%-10% and 13%-15%) and particle sizes (PS: 2-5 mm and 7-10 mm). Thermal and physical-mechanical properties (bulk density, tumbler and shatter indexes, water absorption capacity, moisture and equivalent humidity contents, ash content, higher heating value), flue gas emission of the briquettes were measured. It was found that the optimum briquetting pressure was 160 MPa, optimum moisture content was 8%-10%, and optimum particle size was 2-5 mm for hazelnut husk agricultural residues. The study yielded promising results and proved that the idle residue potential in agriculture could be utilized for green energy.