Dilute sulfuric acid cycle spray flow-through pretreatment of corn stover for enhancement of sugar recovery.
Dilute sulfuric acid cycle spray flow-through pretreatment of corn stover for enhancement of sugar recovery.
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DOI：
10.1016/j.biortech.2008.10.001
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发表时间：
2009-03
影响因子：
11.4
通讯作者：
Lishi Yan;Hongman Zhang;Jingwen Chen;Zengxiang Lin;Q. Jin;Honghua Jia;He Huang
中科院分区：
文献类型：
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作者：
Lishi Yan;Hongman Zhang;Jingwen Chen;Zengxiang Lin;Q. Jin;Honghua Jia;He Huang
设计了一种循环喷淋式流通反应器，用于稀硫酸介质中玉米秸秆的预处理。稀硫酸循环喷淋流通（DCF）工艺提高了木糖产率和纤维素消化率，同时增加了木质素的去除。在DCF系统中，玉米秸秆经2%（w/v）稀硫酸预处理，在95°C下，在最佳反应时间（90 min）内，木糖产率可达90-93%。剩余的固体残余物表现出90-95%的酶消化率，其中纤维素酶负载量为60 FPU/g葡聚糖，这是由于在该过程中有效去除了木质素（70-75%）。与直流预处理和压缩热水预处理工艺相比，DCF法的糖浓度和木糖单体产率更高。新型DCF工艺为木质纤维原料预处理提供了一条可行的途径。
A cycle spray flow-through reactor was designed and used to pretreat corn stover in dilute sulfuric acid medium. The dilute sulfuric acid cycle spray flow-through (DCF) process enhanced xylose sugar yields and cellulose digestibility while increasing the removal of lignin. Within the DCF system, the xylose sugar yields of 90–93% could be achieved for corn stover pretreated with 2% (w/v) dilute sulfuric acid at 95°C during the optimal reaction time (90min). The remaining solid residue exhibited enzymatic digestibility of 90–95% with cellulase loading of 60FPU/g glucan that was due to the effective lignin removal (70–75%) in this process. Compared with flow-through and compress-hot water pretreatment process, the DCF method produces a higher sugar concentration and higher xylose monomer yield. The novel DCF process provides a feasible approach for lignocellulosic material pretreatment.