Institute of Engineering Thermophysics, Chongqing University, Chongqing 400030, China.
Bioresour Technol. 2011 Sep;102(18):8507-13. doi: 10.1016/j.biortech.2011.04.075. Epub 2011 May 1.
In this study, a biofilm photobioreactor with optical fibers that have additional rough surface (OFBP-R) was developed and it was shown that additional rough surface greatly enhanced the biofilm formation and thus increased the cell concentration, leading to an improvement in the hydrogen production performance. The effects of operational conditions, including the influent substrate concentration, flow rate, temperature and influent medium pH, on the performance of OFBP-R were also investigated. The experimental results showed that the optimum operational conditions for hydrogen production were: the influent substrate concentration 60 mM, flow rate 30 mL/h, temperature 30 °C and influent medium pH 7. Under the optimal operation conditions discovered in this work, the OFBP-R yielded fairly good and stable long-term performance with hydrogen production rate of 1.75 mmol/L/h, light conversion efficiency of 9.3% and substrate degradation efficiency of 75%.
在这项研究中，开发了一种带有附加粗糙表面光纤的生物膜光生物反应器（OFBP-R），结果表明，附加粗糙表面极大地促进了生物膜的形成，从而增加了细胞浓度，提高了产氢性能。还研究了操作条件对 OFBP-R 性能的影响，包括进水基质浓度、流速、温度和进水介质 pH 值。实验结果表明，产氢的最佳操作条件为：进水基质浓度 60mM，流速 30mL/h，温度 30°C，进水介质 pH 值 7。在本工作中发现的最佳操作条件下，OFBP-R 表现出相当好且稳定的长期性能，产氢速率为 1.75mmol/L/h，光转化率为 9.3%，基质降解效率为 75%。
