Zhang Jishi, Zang Lihua
School of Environmental Science and Engineering, Qilu University of Technology, Jinan 250353, China; Key Laboratory of Cleaner Production and Industrial Wastes Recycling and Resourcization in Universities of Shandong, Jinan 250353, China.
School of Environmental Science and Engineering, Qilu University of Technology, Jinan 250353, China; Key Laboratory of Cleaner Production and Industrial Wastes Recycling and Resourcization in Universities of Shandong, Jinan 250353, China.
Bioresour Technol. 2016 Jun;209:73-9. doi: 10.1016/j.biortech.2016.02.110. Epub 2016 Mar 2.
This paper investigated the utilization of calcined-red mud (CRM) pretreatment to enhance fermentative hydrogen yields from brewers' spent grain (BSG). The BSG samples were treated with different concentrations (0.0-20g/L) of CRM at 55°C for 48h, before the biohydrogen process with heat-treated anaerobic sludge inoculum. The highest specific hydrogen production of 198.62ml/g-VS was obtained from the BSG treated with 10g/L CRM, with the corresponding lag time of 10.60h. Hydrogen yield increments increased by 67.74%, compared to the control tests without CRM. The results demonstrated that the CRM could hydrolyze more cellulose and further provided adequate broth and suitable pH value for efficient fermentative hydrogen. The model-based analysis showed that the modified Gompertz model presented a better fit for the experimental data than the first-order model.
本文研究了煅烧赤泥（CRM）预处理对提高啤酒糟（BSG）发酵产氢量的作用。在使用热处理厌氧污泥接种物进行生物制氢之前，将BSG样品在55°C下用不同浓度（0.0 - 20g/L）的CRM处理48小时。用10g/L CRM处理的BSG获得了最高的比产氢量，为198.62ml/g-VS，相应的延迟时间为10.60小时。与未使用CRM的对照试验相比，产氢量增加了67.74%。结果表明，CRM可以水解更多的纤维素，并进一步为高效发酵产氢提供充足的发酵液和合适的pH值。基于模型的分析表明，改进的Gompertz模型比一级模型更适合实验数据。
