| 董存军,曾强,孙鹏,颜莉,周宇锋,肖超,杨德伟,黄远景,王磊.草酸预处理麦秆工艺优化及其糖化发酵产氢研究[J].中国造纸,2025,44(12):98-104 |
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| 草酸预处理麦秆工艺优化及其糖化发酵产氢研究 |
| Optimization of Oxalic Acid Pretreatment of Wheat Straw for Hydrogen Production by Saccharification and Fermentation |
| 收稿日期：2025-05-09 修订日期：2025-06-25 |
| DOI：10.11980/j.issn.0254-508X.2025.12.010 |
| 关键词: 小麦秸秆 草酸 响应面法 数学模型 糖化发酵 |
| Key Words:wheat straw oxalic acid response surface methodology mathematical model saccharification and fermentation |
| 基金项目: |
| 作者 | 单位 | 邮编 | | 董存军* | 武汉虹之彩包装印刷有限公司,湖北武汉,430040 | 430040 | | 曾强 | 武汉虹之彩包装印刷有限公司,湖北武汉,430040 | 430040 | | 孙鹏 | 武汉虹之彩包装印刷有限公司,湖北武汉,430040 | 430040 | | 颜莉 | 武汉虹之彩包装印刷有限公司,湖北武汉,430040 | 430040 | | 周宇锋 | 武汉虹之彩包装印刷有限公司,湖北武汉,430040 | 430040 | | 肖超 | 武汉虹之彩包装印刷有限公司,湖北武汉,430040 | 430040 | | 杨德伟 | 武汉虹之彩包装印刷有限公司,湖北武汉,430040 | 430040 | | 黄远景 | 湖北中烟工业有限责任公司,湖北武汉,430040 | 430040 | | 王磊* | 湖北工业大学绿色轻工材料湖北省重点实验室,湖北武汉,430068 | 430068 |
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| 摘要:本研究采用Box-Behnken设计和基于3变量中心组合设计的响应面法，对草酸溶液预处理麦秆的工艺进行了优化，建立了麦秆葡萄糖转化率与预处理条件之间的数学模型，并验证了该模型的有效性。结果表明，预处理的反应时间和温度是影响麦秆酶解效果的显著因素。通过响应面分析优化，葡萄糖转化的最佳预处理条件为水与草酸物质的量比3.8∶1.0、反应温度110 ℃、保温时间20 min。在此条件下，纤维素的葡萄糖转化率达95.1%，与模型预测的葡萄糖转化率（94.5%）相近。此条件下处理后的麦秆同步糖化发酵产氢量可达131.5 mL/g，远高于分步糖化发酵的生物氢产量（105.2 mL/g）。 |
| Abstract:This study used a Box-Behnken design and response surface methodology based on a three-variable central composite design to optimize the oxalic acid solution pretreatment process for wheat straw. A mathematical model was established to correlate the glucose conversion rate of wheat straw with pretreatment conditions, and its validity was validated. The results showed that reaction time and temperature during pretreatment were significant factors influencing the enzymatic hydrolysis efficiency of wheat straw. Through response surface analysis optimization, the optimal pretreatment conditions for glucose conversion were identified as follows: a molar ratio of water to oxalic acid of 3.8∶1.0, a reaction temperature of 110 ℃, and a holding time of 20 minutes. Under these conditions, the glucose conversion rate of cellulose reached 95.1%, similar to the model-predicted value (94.5%). Furthermore, the hydrogen production via simultaneous saccharification and fermentation (SSF) of pretreated wheat straw under these conditions achieved 131.5 mL/g, significantly higher than the biohydrogen yield from separate hydrolysis and fermentation (SHF) (105.2 mL/g). |
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