Optimasi pirolisis limbah kayu Durian (Durio zibethinus) berdasarkan ukuran partikel dan suhu

Abstract

The quality of biochar is influenced by the pyrolysis method and the type of raw material. However, it should be noted that the characteristics of biochar as a soil amendment depend on the production conditions (pyrolysis temperature) and the initial raw materials. This study was aimed to determine the optimum conditions for moisture content, ash content, volatile matter, and fixed carbon of durian wood waste biochar based on the particle size of raw materials and pyrolysis temperature. The size of durian wood waste used in this study was 0.17–0.42 mm;; 0.42–1.00 mm;; and 1.00–2.83 mm. The variation in pyrolysis temperature was 350, 450, 550 °C. The treatment was repeated for three times. Optimization used the Response Surface Methodology (RSM) method with a Central Composite Design (CCD) design. Based on the quadratic model on mathematical equations, the optimum moisture content of durian wood waste biochar was 3.83% with 1.78 mm of raw material particle size and 505.1 oC of pyrolysis temperature. The optimum volatile matter of durian wood waste biochar was 15.48% with 0.82 mm of raw material particle size of and 542.2 oC of pyrolysis temperature. The optimum ash content of durian wood waste biochar was 2.14% with 2.91 mm of particle size and 519.5oC of pyrolysis temperature. Optimum fixed carbon biochar was 77.84% with 1.44 mm of raw material particle size of and 549.5 oC of pyrolysis temperature.