Ammonia fiber explosion treatment of corn stover
Ammonia fiber explosion treatment of corn stover
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DOI：
10.1385/abab:115:1-3:0951
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发表时间：
2004-03-01
影响因子：
3
通讯作者：
Dale, BE
中科院分区：
文献类型：
--
作者：
Teymouri, F;Laureano-Pérez, L;Dale, BE
优化工艺条件和参数（例如氨负载、生物质水分含量、温度和停留时间）对于氨纤维爆炸工艺的最大效率是必要的。玉米秸秆的最佳预处理条件大致为温度90℃、氨水与干玉米秸秆质量比1:1、玉米秸秆含水量60%（以干重计）、停留时间（保持在目标温度）5 min。使用 60 滤纸单位 (FPU) 纤维素酶/g 葡聚糖（相当于 22 FPU/g 干玉米秸秆）对最佳处理的玉米秸秆进行酶解，获得了大约 98% 的理论葡萄糖产率。该样品的乙醇产量比未处理样品增加了 2.2 倍。与 60 FPU 相比，将酶负荷降低至 15 和 7.5 FPU/g 葡聚糖并没有显着影响葡萄糖产量，并且随着处理温度的升高，不同酶水平下效果之间的任何差异都会减小。
Optimizing process conditions and parameters such as ammonia loading, moisture content of biomass, temperature, and residence time is necessary for maximum effectiveness of the ammonia fiber explosion process. Approximate optimal pretreatment conditions for corn stover were found to be temperature of 90degreesC, ammonia:dry corn stover mass ratio of 1:1, moisture content of corn stover of 60% (dry weight basis), and residence time (holding at target temperature), of 5 min. Approximately 98% of the theoretical glucose yield was obtained during enzymatic hydrolysis of the optimal treated corn stover using 60 filter paper units (FPU) of cellulase enzyme/g of glucan (equal to 22 FPU/g of dry corn stover). The ethanol yield from this sample was increased up to 2.2 times over that of untreated sample. Lowering enzyme loading to 15 and 7.5 FPU/g of glucan did not significantly affect the glucose yield compared with 60 FPU, and any differences between effects at different enzyme levels decreased as the treatment temperature increased.