Journal
BIORESOURCE TECHNOLOGY
Volume 339, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2021.125575
Keywords
Cellulosic ethanol; Liquid hot water; Pretreatment; Sugar cane bagasse; One-pot
Funding
- National Natural Science Foundation of China [21978053, 51508547]
- Key Area R&D Program of Guangdong Province [2020B0101070001]
- OneHundred Young Talents Program of Guangdong University of Technology [220413185]
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This study focused on the low-cost and energy-efficient production of cellulosic ethanol from sugarcane bagasse using a one-pot method without the need for solid-liquid separation, water washing, and detoxification. The results showed a high total fermentable sugar conversion and ethanol yield, with no wastewater discharge throughout the process. Overall, this approach provides an economically feasible method for ethanol production.
In these studies, a low-cost and energy efficiency production of cellulosic ethanol from sugarcane bagasse (SCB) using one-pot without solid-liquid separation, water washing, and detoxification was performed. Firstly, SCB was pretreated using liquid hot water as the only reagent at 210 degrees C for a short time (0 min), and the solid liquid ratio (SLR) was 1:20 (w/v). Then, the whole slurry of pretreated SCB was enzymatically hydrolyzed and fermented for cellulosic ethanol in one-pot. The results indicated that the one-pot preparation for ethanol achieved a high total fermentable sugar conversion of 84.52 +/- 1.24%, containing 88.61 +/- 1.57% of glucose and 78.01 +/- 1.63% of xylose. Moreover, the ethanol yield reached 257 +/- 5.51 mg/g (SCB), which was 77.56 +/- 1.64% of the theoretical ethanol conversion from SCB. Importantly, there was no wastewater discharge in the whole process. Overall, the present work provides an economically feasible method for ethanol production.
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