Effect of Autohydrolysis of Waste Fiber Palm Lignocellulosic From of the Production Chain of Biodiesel
Keywords:
biomass, auto-hydrolysis, fibersAbstract
The palm waste generated in the production chain of palm oil biodiesel was of about 38% of lignocellulosic waste formed normally empty bunches of fibers. The fundamental characterization of pretreated empty bunches of fibers with liquid hot water. This material with average size of 80 mesh was composed of cellulose 14,4%, hemicellulose 16%, insoluble lignin acid 29,4%, lignin-soluble acid 3,2%, extractives 28,2% and total ash 5,2%. The time and temperature of liquid pretreatment with hot water were 30 and 60 min and 100° C. The characterization of these materials was made by SEM, EDS and infrared spectrometry and HPLC extractives. These analyzes showed modification of the morphology the fibers of empty clusters of oil palm with the appearance of porosity and increase of pulp crystallization rate by the solubility of amorphous cellulose, hemicellulose and lignin as shown by the results of FT-IR. After the hydrothermal treatment, the product of the hydrolysis reaction analyzed by HPLC. The increasing the pretreatment time confirms that the auto-hydrolysis process occurs causing an expansion of the fibers, exposing the crystalline cellulose and probably partial leaching of the hemicellulose and lignin. The products were identified: glucose, xylose, and acetic acid. Therefore, under the conditions of the pretreatment was not observed the formation of furfural.
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