Development of chicken manure pelleting machine for organic fertilizer production

Jeffrey G Dichoso (), Elmar M Villota (), Jonathan V Fabulac () and Vitaliana U Malamug ()

Asian Journal of Agriculture and Rural Development, 2025, vol. 15, issue 1, 94-101

Abstract: This research aimed to solve the chicken manure disposal problem in the Philippines' poultry industry by developing and evaluating a pelleting machine made from local materials. The machine utilized a flat die and roller system to pelletize dried chicken manure with molasses. Following PAES guidelines and PNS-BAFPS specifications, the study assessed pellet physical properties and processing costs, considering belt speeds (650, 950, 1250 rpm) and molasses-to-chicken ratios (2:100, 3:100, 4:100) in a completely randomized two-factorial experiment. Results showed that higher belt speeds (950 and 1250 rpm) significantly increased pelleting capacity, reaching a maximum capacity of 160.09 kg/hr and 165.12 kg/hr, respectively. An optimal 3:100 molasses ratio yielded 98.02% pelleting efficiency and 98.29% recovery, exceeding PAES minimum standards. Additionally, the produced pellets met PNS-BAFPS physical characteristics, and the pellet durability is comparable to that of the highest pellet durability index of 80%. However, moisture content exceeded recommended levels (47.07-48.63%), indicating the need for drying. At a processing cost of ₱4.26/kg, the machine provides an economical solution, with future development focused on incorporating drying technologies and conducting nutrient analyses.

Keywords: Flat die mill; Individual pellet density; Molasses-chicken manure ratio; Pellet durability index; Pelleting capacity; Pelleting efficiency; Pelleting recovery. (search for similar items in EconPapers)
Date: 2025
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