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Optimization of Ammonia Percolation Process for Ethanol Production from Miscanthus Sinensis  

Kim, Kyoung-Seob (Department of Chemical Engineering, Kyonggi University)
Kim, Jun Seok (Department of Chemical Engineering, Kyonggi University)
Publication Information
Korean Chemical Engineering Research / v.48, no.6, 2010 , pp. 704-711 More about this Journal
Abstract
Lignocellulose ($2^{nd}$ generation) is difficult to hydrolyze due to the presence of lignin and the technology developed for cellulose fermentation to ethanol is not yet economically viable. However, recent advances in the extremely new field of biotechnology for the ethanol production are making it possible to use of agriculture residuals and nonedible crops biomass, e.q., rice straw and miscanthus sinensis, because of their several superior aspects as agriculture residual and nonedible crops biomass; low lignin, high contents of carbohydrates. In this article, as the basic study of AP(Ammonia Percolation), the properties and the optium conditions of process were established, and then the overall efficiency of AP was investigated. The important independent variables for AP process were selected as ammonia concentration, reaction temperature, and reaction time. The percolation condition for maximizing the content of cellulose, the enzymatic digestibility, and the lignin removal was optimized using RSM(Response Surface Methodology). The determined optimum condition is ammonia concentration; 11.27%, reaction temperature; $157.75^{\circ}C$, and reaction time; 10.01 min. The satisfying results were obtained under this optimized condition, that is, the results are as follows: cellulose content(relative); 39.98%, lignin content(relative); 8.01%, and enzymatic digestibility; 85.89%.
Keywords
Biomass Pretreatment; Ammonia Percolation; Enzymatic Hydrolysis; Bio Ethanol;
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Times Cited By KSCI : 2  (Citation Analysis)
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