光合细菌生物膜制氢反应器的产氢特性  

HYDROGEN PRODUCTION BEHAVIOR OF A BIOFILM REACTOR WITH PHOTOSYNTHETIC BACTERIA

作　　者：田鑫[1] 廖强[1] 张攀[1] 王永忠[1] 朱恂[1] 

机构地区：[1]重庆大学工程热物理研究所,重庆400044

出　　处：《太阳能学报》2008年第12期1553-1557,共5页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金项目(No.90510020;No.50576107);教育部新世纪优秀人才支持计划(No.NCET-04-0845);重庆市自然科学基金(CSTC;2006BB7225)

摘　　要：对光合细菌生物膜制氢反应器的产氢性能进行了实验研究,探讨了光照度、光谱和底物浓度对反应器产氢性能的影响。实验结果表明:光合细菌生物膜反应器内最适底物浓度为0.12 mol/L,最佳光照度为5000 k,过高或过低的底物浓度和光照度均对光合细菌产氢具有抑制作用;而光的波长对光合细菌产氢的最适底物浓度和最佳光照度均无影响。当底物浓度为0.12mol/L,光照度为5000k,波长为590nm 时,反应器的产氢率达到最高,为3.54mg/h。The hydrogen production performance of a biofilm reactor with photosynthetic bacteria was experimentally studied in present paper. Effect of light illumination intensity, wavelength, and substrate concentration on the hydrogen production performance were discussed, respectively. Experimental results show that the optimal substrate concentration of the biofilm reactor is 0.12 mol/L. A lower substrate concentration leads to a less mass transfer rate, and a larger substrate concentration tends to inhibit the activity of photosynthetic bacteria, both of them result in a decrease in the hydrogen production rate of the biofilm reactor. Besides, the hydrogen production rate firstly increases to a peak value and then, decreases with the increase in light illumination intensity. The optimal light illumination is 5000 Ix. An extra large light illumination will reduce the activity of photosynthetic bacteria. It is also found that the optimal substrate concentration and light illumination are independent on light wavelength. The biofilm reactor has the highest hydrogen production rate of 3.54 mg/h at the substrate concentration of 0.12 mol/L, the light illumination of 5000 lx, and the light wavelength of 590 nm.

关 键 词：光合细菌 生物膜反应器 光照度 波长 氢气产率 

分 类 号：TK519[动力工程及工程热物理—热能工程]