Shrivastava Akansha, Sharma Rakesh Kumar
Department of Biosciences, Manipal University Jaipur, Jaipur 303007, Rajasthan, India.
Heliyon. 2023 Jan 13;9(1):e12951. doi: 10.1016/j.heliyon.2023.e12951. eCollection 2023 Jan.
The present study evaluated efficiency of wheat straw (WS) hydrolysate obtained through fungal pre-treatment to produce ethanol and electricity in an electrochemical bioreactor. Three white rot fungi and were used to degrade WS for hydrolysate preparation, Lignocellulolytic enzyme production was also monitored during the pretreatment. Yeast was allowed to ferment all three hydrolysates up to 12 days. The yeast showed maximum electrochemical response as open circuit voltage (0.672 V), current density 542.42 mA m, and power density of 65.09 mW m on 12th day in the hydrolysate prepared using . Maximum ethanol production of 9.2% (w/v) was achieved on 7th day with a fermentation efficiency of about 62.1%. Further, the coulombic efficiency improved from 0.06 to 1.46% during 12 days of the experiment. Thus, the results indicated towards the possible conversion of lignocellulosic biomass into bioethanol along with bioelectricity generation.
本研究评估了通过真菌预处理获得的小麦秸秆水解产物在电化学生物反应器中生产乙醇和电力的效率。使用三种白腐真菌降解小麦秸秆以制备水解产物，预处理过程中还监测了木质纤维素酶的产生。让酵母发酵所有三种水解产物长达12天。在使用[未提及的真菌名称]制备的水解产物中，酵母在第12天表现出最大的电化学响应，即开路电压为0.672 V，电流密度为542.42 mA/m²，功率密度为65.09 mW/m²。在第7天实现了9.2%（w/v）的最大乙醇产量，发酵效率约为62.1%。此外，在12天的实验过程中，库仑效率从0.06%提高到了1.46%。因此，结果表明木质纤维素生物质有可能转化为生物乙醇并同时产生生物电。
