School of Electric Power Engineering, China University of Mining and Technology, Xuzhou 221116, China; Institute of Engineering Thermophysics, Chongqing University, Chongqing 400030, China.
Low Carbon Energy Institute, China University of Mining and Technology, Xuzhou 221008, China.
Bioresour Technol. 2015 Apr;181:40-6. doi: 10.1016/j.biortech.2015.01.022. Epub 2015 Jan 13.
A multiphase mixture model was developed for revealing the interaction mechanism between biochemical reactions and transfer processes in the entrapped-cell photobioreactor packed with gel granules containing Rhodopseudomonas palustris CQK 01. The effects of difference operation parameters, including operation temperature, influent medium pH value and porosity of packed bed, on substrate concentration distribution characteristics and photo-hydrogen production performance were investigated. The results showed that the model predictions were in good agreement with the experimental data reported. Moreover, the operation temperature of 30 °C and the influent medium pH value of 7 were the most suitable conditions for photo-hydrogen production by biodegrading substrate. In addition, the lower porosity of packed bed was beneficial to enhance photo-hydrogen production performance owing to the improvement on the amount of substrate transferred into gel granules caused by the increased specific area for substrate transfer in the elemental volume.
建立了多相混合物模型，以揭示包埋细胞光生物反应器中生化反应与传质过程的相互作用机制，该光生物反应器中填充了含有沼泽红假单胞菌 CQK01 的凝胶颗粒。考察了不同操作参数（包括操作温度、入口介质 pH 值和填充床的孔隙率）对基质浓度分布特征和光产氢性能的影响。结果表明，模型预测与已报道的实验数据吻合良好。此外，操作温度为 30°C 和入口介质 pH 值为 7 是生物降解基质光产氢的最适条件。此外，较低的填充床孔隙率有利于提高光产氢性能，因为增加了基质传递的比表面积，从而增加了基质在单元体积内传递的量。
