การผลิตน้ำมันชีวภาพจากทะลายปาล์มเปล่า โดยไพโรไลซิสในบรรยากาศไนโตรเจนและไอน้ำ / พีรพล เรืองวิไลรัตน์ = Bio-oil production from oil plam empty fruit bunch by pyrolysis in nitrogen and steam atmospheres / Peerapon Ruengvilairat
The work was carried out the bio-oil production from oil palm empty fruit bunch (EFB) by pyrolysis in nitrogen and steam atmospheres. The particle ranges were below 500 micrometers, between 500-1180, and 1180-2230 micrometers. Feed rates were 150, 350, and 550 rpm. Both factors were analyzed by single factor ANOVA. Additionally, Box-Behnken design was to investigate factors, including temperature (350-600 °C) under sweeping gas as the followings: 0, 100, and 200 cm3/min of nitrogen and 0, 9, and 18 cm3/min of steam. The particle size below 1180 µm was optimal for bio-oil production. The mathematical model from Box-Behnken design succeeded in predicting the optimal conditions for normal and nitrogen atmospheres. In the normal atmosphere or no sweeping gas, the condition was 475 °C and 450 rpm of feed rate. The optimal condition for nitrogen atmosphere was 530 °C, 450 rpm of feed rate, and 200 cm3/min of nitrogen flow rate. However, steam caused high uncertainty and model was unable to predict yield accurately. The bio-oils from normal, nitrogen, steam, and mixed atmospheres were analyzed for general characteristics. NMR and GC-MS were to analyze chemical compositions in the bio-oils. Relationships between physical and chemical characteristics were determined and discussed.