Enhanced hydrogen production from anaerobic fermentation of rice straw pretreated by hydrothermal technology.
Enhanced hydrogen production from anaerobic fermentation of rice straw pretreated by hydrothermal technology.
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DOI：
10.1016/j.biortech.2014.08.049
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发表时间：
2014-11
影响因子：
11.4
通讯作者：
Leilei He;He Huang;Z. Lei;Chunguang Liu;Zhenya Zhang
中科院分区：
文献类型：
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作者：
Leilei He;He Huang;Z. Lei;Chunguang Liu;Zhenya Zhang
本研究测试了不同峰值温度(150℃和210℃，分别为HTT150和HTT210)和保温时间(0-30分钟)下的水热处理(HTT)对稻草在总固形物(TS)为20%时的增溶作用以及随后从合成的底物中产生H_2的影响。在所有的HTT条件下，木质素含量没有明显的降解，这确实打开了稻草的表面结构，并对稻草具有有效的增溶作用。结果表明，秸秆颗粒在高温下产生的可溶性碳水化合物与随后的H_2产生量呈极显著正相关(r=0.9987)。在HTT210和0℃保温条件下，每克挥发性固体(VS)中的可溶性碳水化合物含量最高，达到80 mg/g，相应的产氢量最高(28 mg/g-VS)，约为对照的93倍。结果表明，在考虑后续的H_2生产的情况下，保温时间对于HTT的预处理是至关重要的。
This study tested the effect of hydrothermal treatment (HTT) at different peak temperatures (150 °C and 210 °C, i.e. HTT150 and HTT210, respectively) and holding time (0–30 min) on the solubilization of rice straw at total solids (TS) of 20% and then subsequent H2production from resultant substrates. No obvious degradation was detected in lignin content under all tested HTT conditions which did open up the surface structure and have efficient solubilization effect on rice straw. Soluble carbohydrates produced from straw particles during HTT210 was found to have strongly (r= 0.9987) positive correlation with the subsequent H2yield. The maximum soluble carbohydrates, 80 mg per gram of volatile solids (VS) was achieved under HTT210 and 0 min of holding condition, correspondingly yielding the highest hydrogen production (28 ml/g-VS), about 93-fold higher than the control. Results suggest that holding time is crucial for HTT pretreatment when taking subsequent H2production into consideration.