Effects of reduced severity of ammonium sulfite pretreatment on bamboo for high cellulose recovery.
Effects of reduced severity of ammonium sulfite pretreatment on bamboo for high cellulose recovery.
复制标题
硫酸铵预处理对竹子的严重程度降低的影响，以使纤维素回收高。
DOI：
10.1039/c9ra06475c
复制
发表时间：
2019-09-23
期刊：
影响因子：
3.9
通讯作者：
Li, Zhiqiang
中科院分区：
文献类型：
--
作者：
Zhang, Liyue;Liu, Yue;Li, Zhiqiang
本研究对亚硫酸铵处理竹材以获得高纤维素回收率的工艺条件进行了研究和优化。为了在亚硝酸铵浓度、处理时间、处理温度等较弱的前处理条件下获得较高的纤维素回收率，采用基于响应面法的Box-Behnken设计进行三因素三水平试验。结果表明，酶解48h后，纤维素得率可达58.36~59.87%，用20%亚硫酸铵在150℃下处理6h，所得纤维素得率与预测值(58.87%)基本一致。比未处理的竹材(4.41%)高出约13倍。在设计空间内，要获得较高的纤维素回收率，前处理温度和亚硝酸铵浓度是比前处理时间更重要的因素。此外，在优化的条件下对竹材基质进行了扫描电子显微镜分析，结果表明，经过预处理后的生物质表面变得更加粗糙和疏松。本研究对亚硫酸铵处理竹材以获得高纤维素回收率的工艺条件进行了研究和优化。
In this study, the conditions for the pretreatment of bamboo by ammonium sulfite to achieve high cellulose recovery were investigated and optimized. To obtain higher cellulose recovery under low-severity pretreatment conditions such as ammonia sulfite concentration, pretreatment time and pretreatment temperature, three-factor and three-level experiments were designed by the Box–Behnken design based on response surface methodology. The results showed that the cellulose recovery yield after 48 h enzymatic hydrolysis could reach 58.36–59.87%; moreover, the recovered cellulose was pretreated with 20% ammonium sulfite at 150 °C for 6 h, and the obtained yield was in agreement with the predicted yield (58.87%). It was about 13-fold higher than that of the untreated bamboo (4.41%). Pretreatment temperature and ammonia sulfite concentration are significantly important factors than pretreatment time in the design space for achieving high cellulose recovery. Moreover, SEM analysis of the pretreated bamboo substrate under optimized conditions illustrated that the biomass surface had become more rough and porous after pretreatment. In this study, the conditions for the pretreatment of bamboo by ammonium sulfite to achieve high cellulose recovery were investigated and optimized.
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影响因子：
3.8
作者：
Dadi, Anantharam P.;Varanasi, Sasidhar;Schall, Constance A.
通讯作者：
Schall, Constance A.
影响因子：
3.8
作者：
Kang, Kyeong Eop;Jeong, Gwi-Taek;Park, Don-Hee
通讯作者：
Park, Don-Hee
影响因子：
0.5
作者：
Li, Zhiqiang;Yang, Qiang;Pan, Xuejun
通讯作者：
Pan, Xuejun
影响因子：
11.4
作者：
Zhu, J. Y.;Pan, X. J.;Gleisner, R.
通讯作者：
Gleisner, R.
影响因子：
3
作者：
Bridgwater, AV;Meier, D;Radlein, D
通讯作者：
Radlein, D