光合细菌利用沼液废水制氢的影响因素

Influencing factors of hydrogen producing by photosynthetic bacteria using biogas slurry

沼液资源化利用将是未来热点问题,首次尝试研究利用光合细菌处理沼液废水的产氢工艺条件,探讨反应预处理时间、光照度、温度、沼液的pH值和接种量因素对光合细菌产氢过程的影响。结果表明,在光照厌氧的条件下,光合细菌产氢的最佳工艺条件为:温度35℃,光照度1 000 lux,pH值9,接种量50%,反应预处理时间24 h,最大产氢量达到500mL/(200 mL沼液),对进一步研究开发光合细菌处理沼液废水和产氢有重要的参考价值。

Biogas slurry utilization will become a hot issue in a few years. In this work, process conditions of hydrogen produced by photosynthetic bacteria using biogas were first studied, such as pretreatment time of biogas slurry, illumination, temperature, pH value and inoculum size. The results showed that the maximal hydrogen production reached 500 mL HJ（200 mL biogas slurry） at the optimum conditions： temperature of 35℃ ; illumination of 1 000 lux; pH of 9; inoculum size of 50% ; pretreatment time of 24 h in the anaerobic-light cultivation. This work could provide significant scientific reference value for further biological hydrogen production from biogas slurry.