Optimization of thermal-dilute sulfuric acid pretreatment for enhancement of methane production from cassava residues.
Optimization of thermal-dilute sulfuric acid pretreatment for enhancement of methane production from cassava residues.
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DOI：
10.1016/j.biortech.2010.12.031
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发表时间：
2011-02
影响因子：
11.4
通讯作者：
Qinghua Zhang;Lei Tang;Jian-hua Zhang;Zhonggui Mao;L. Jiang
中科院分区：
文献类型：
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作者：
Qinghua Zhang;Lei Tang;Jian-hua Zhang;Zhonggui Mao;L. Jiang
在本研究中，通过一组统计设计的实验对热稀硫酸（TDSA）水解预处理木薯渣进行了研究。采用三因素中心综合设计（CCD）确定木薯渣用于甲烷生产的最佳预处理条件。采用响应面法 (RSM) 评估了温度、H2SO4 浓度和反应时间对甲烷产量 (IMY) 增加的单独影响和交互影响。优化后得到的最佳预处理条件为157.84℃，使用2.99%（w/w TS）H2SO4处理20.15min，最大甲烷产量（248mL/gVS）比对照（158mL/gVS）提高了56.96%，与预测值56.53%非常接近。这些结果表明，通过 RSM 分析获得的模型适合预测最佳预处理条件，并且利用 TDSA 预处理木薯渣来提高甲烷产量具有巨大潜力。
In this study, the pretreatment of cassava residues by thermal-dilute sulfuric acid (TDSA) hydrolysis was investigated by means of a statistically designed set of experiments. A three-factor central composite design (CCD) was employed to identify the optimum pretreatment condition of cassava residues for methane production. The individual and interactive effects of temperature, H2SO4concentration and reaction time on increase of methane yield (IMY) were evaluated by applying response surface methodology (RSM). After optimization, the resulting optimum pretreatment condition was 157.84°C, utilizing 2.99% (w/w TS) H2SO4for 20.15min, where the maximum methane yield (248mL/gVS) was 56.96% higher than the control (158mL/gVS), which was very close to the predict value 56.53%. These results indicate the model obtained through RSM analysis is suit to predict the optimum pretreatment condition and there is great potential of using TDSA pretreatment of cassava residues to enhance methane yield.