Abstract
The main concern in converting sugarcane bagasse to bio-butanol fuel is the conversion of the polysaccharides by enzymatic breakdown into monosaccharides. This study focused on the use of steam explosion as a pretreatment method. Steam explosion treatment of biomass had been previously used to increase cellulose accessibility [1,3,5,6,8,9]. Following steam explosion pretreatment, sugarcane bagasse was subjected to enzymatic hydrolysis employing the Acremonium Cellulase as the reactant. The sugars released by enzymatic hydrolysis were further fermented by Clostridium Beijerinckii. Raw sugarcane bagasse was found to have the polysaccharides content of 56.24%. The fiber loss during the steam explosion treatment was high, up to 67.11%. Steam explosion treatment on sugarcane bagasse increased the enzymatic hydrolysis capability of cellulose. After steam explosion treatment at temperature of 224oC for 2 minutes, the cellulose hydrolysis conversion efficiency could reach 98.04% by applying Acremonium Cellulase for 72 hours. It has been stated that steam explosion was suitable to improve cellulose content and consequently improve fermentable glucose yield from enzymatic hydrolysis while drastically reducing hemicellulose content of the fibers. Butanol has been successfully produced from the sugarcane bagasse hydrolysate in acetone-butanol-ethanol (ABE) process applying C. Beijerinckii.
Highlights
In the 20th century, the world economy has been dominated by technologies that depend on fossil energy, such as petroleum, coal, or natural gas to produce fuels, chemicals, materials and power
Global warming is the theory that the buildup of greenhouse gases (GHG) in the earth’s atmosphere, like carbon dioxide, traps more of the sun’s radiation, causing the earth to become warmer
In this paper we research on capability of the butanol synthesis from sugarcane bagasse using steam explosion as a pretreatment method, with employing Clostridium Beijerinckii for butanol fermentation
Summary
In the 20th century, the world economy has been dominated by technologies that depend on fossil energy, such as petroleum, coal, or natural gas to produce fuels, chemicals, materials and power. People could mitigate its carbon dioxide emissions by substituting biofuels for fossil fuels used in the transportation sector. The agricultural residues and wastes used for the production of biofuels (including ABE) include rice straw, wheat straw, sugarcane bagasse, wood (hardwood), byproducts left over from the corn milling process (corn fiber), annual and perennial crops, and waste paper. These substrates are composed primarily of polysaccharides that contain six and five carbon sugars. In this paper we research on capability of the butanol synthesis from sugarcane bagasse using steam explosion as a pretreatment method, with employing Clostridium Beijerinckii for butanol fermentation
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