104 / 2021-06-30 21:53:12

Effect of light disturbance on the photo-fermentative hydrogen production of giant reed

Light disturbance,Hydrogen production,Giant reed,Photo-fermentation,cumulative hydrogen yield

This study aimed to evaluate the effect of light disturbance on the photo-fermentative hydrogen production of giant reed. For this purpose, different intensity light disturbances (4000lux,5000lux,6000lux,7000lux) at 24h and 36h during the photo-fermentative hydrogen production process were studied. The cumulative hydrogen yield, hydrogen production rate, OD_660nm, pH, Oxidation-Reduction Potential (ORP), and total sugar yield were monitored to explore the influence in the study. The light disturbance has a significant effect on the photo-fermentative hydrogen production. The experiment was applied to the light intensity of 6000lux at 24h, achieved the highest cumulative hydrogen production capacity of 123.4 mL/g TS, which was 19.6% higher than that of the control group (110.4 mL/g TS) and 12.5% higher than the maximum level of the disturbance of 36h (104 mL/g TS). Under the best light disturbance conditions, the maximum hydrogen production potential (P) and the period of latency were 616.38mL H₂ and 10.72 h. The timing supplemental illumination was proved to be a useful mean for enhanced hydrogen yield of photo-fermentation, which provided a new way for the efficient use of lignocellulosic biomass.