以蒸煮爆碎前處理法 增進狼尾草糖化率的研究

Steam explosion pretreatment of Napier grass for enzyme hydrolysis

張振維(Chen-Wei Chang)

指導教授 ： 陳文章 ； 余琬琴

國立臺北科技大學/工程學院/化學工程研究所/碩士(2008年)

https://doi.org/10.6841/NTUT.2008.00159

摘要

木質纖維素類物質利用來生產生物燃料與特用化學品，但由於其三種主要成份(纖維素、半纖維素、木質素)構成複雜。因此若要增加其糖化率，必需經由適當的前處理此一步驟，將其立體結構破壞，如此後續的纖維素水解反應方可有效進行。本研究以狼尾草(Pennisetum purpureum)為原料，並利用蒸煮爆碎法(Steam explosion)來探討不同處理條件下對於狼尾草結構破壞及糖化率的影響，以找出最適的操作參數，本研究探討的參數主要包括溫度、時間、物料的粒徑及鹼液沖洗與否。

關鍵字

蒸煮爆碎法 ； 狼尾草 ； 酵素水解 ； 生物能源

並列摘要

Lignocellulosic materials are renewable resources that can be directly or indirectly used for the production of biofuels and commodity chemicals. However, these applications are limited by the association with three main components of the plant cell wall, cellulose, hemicellulose and lignin. Therefore, pretreatment of lignocelluloses to disrupt their recalcitrant structures is necessary in order to increase the digestibility of the materials. The current research investigates the utilization of Napier grass(Pennisetum purpureum) as a feedstock to produce a value-added product-fermentable sugars.
This research focused on the use of steam explosion as the pretreatment method. Steam explosion treatment of lignocellulosic material has been previously described to increase cellulose digestibility. The governing factors for the treatment of steam explosion are steam temperature and retention time. The two factors are combined into single variable, severity factor, log(R0) . A factorial design was used to understand the influence of three variables in the process, temperature, retention time and sample particle size. The effect of steam explosion pretreatment on enzymatic hydrolysis from Napier grass was studied using a statistically method based on experimental design.

並列關鍵字

Steam explosion ； Napier grass ； Enzyme hydrolysis ； Bioenergy

參考文獻

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