Received Oil Yields and Chemical Compounds of Mixed Grass Synthesized by Pyrolysis Process

Abstract

The pyrolysis of mixed grass (Cogongrass and Manilagrass), conducted criteria with temperatures in the range of 400-500°C, the feeding rate of 150, 350, and 550 rpm (r·min −1 )). Preliminary result of proximate analysis was founded that the high volatile matter, low ash and moisture. The products yield calculation showed that the liquid yield of bio-oil obtained from mixed grass was highest of 42.37 % at 350 rpm, the gases and the solid yield of mixed grass by during pyrolysis were 28.88 and 28.75 %, at 350 rpm, respectively,. Indicated that biomass from mixed grass had good received yields because of low solid yield and gas yield and high liquid yield at 350 rpm. The compounds detected in bio-oil from mixed grass showed that the functional groups, especially; Phenols (24.78 %), Phenol, 2,3-dimethyl-(2.52%), Phenol, 2,6- dimethoxy (14.48 %) ,Phenol, 2-methoxy-(3.18 %), Phenol, 3-methyl-(3.23 %), Phenol, 2-methyl-(4.97 %), Phenol, 4-ethyl-2-methoxy-(3.95 %), alcohols, and ketones.