Role of residue cornstalk derived biochar for the enhanced bio-hydrogen production via simultaneous saccharification and fermentation of cornstalk

2021 ◽  
pp. 125006
Author(s):  
Lei Zhao ◽  
Kai-Kai Wu ◽  
Chuan Chen ◽  
Hong-Yu Ren ◽  
Zi-Han Wang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Simultaneous Saccharification And Fermentation ◽  
Simultaneous Saccharification

scholarly journals Enhancing Hydrogen Production from Chlorella sp. Biomass by Pre-Hydrolysis with Simultaneous Saccharification and Fermentation (PSSF)

Energies ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 908 ◽  
Author(s):  
Tran Giang ◽  
Siriporn Lunprom ◽  
Qiang Liao ◽  
Alissara Reungsang ◽  
Apilak Salakkam
Keyword(s):  
Hydrogen Production ◽  
Reducing Sugars ◽  
Simultaneous Saccharification And Fermentation ◽  
Hydrogen Yield ◽  
Microalgal Biomass ◽  
Fermentation Time ◽  
Chlorella Sp ◽  
Volatile Solids ◽  
Filter Paper Unit ◽  
Simultaneous Saccharification

Simultaneous saccharification and fermentation (SSF) and pre-hydrolysis with SSF (PSSF) were used to produce hydrogen from the biomass of Chlorella sp. SSF was conducted using an enzyme mixture consisting of 80 filter paper unit (FPU) g-biomass−1 of cellulase, 92 U g-biomass−1 of amylase, and 120 U g-biomass−1 of glucoamylase at 35 °C for 108 h. This yielded 170 mL-H2 g-volatile-solids−1 (VS), with a productivity of 1.6 mL-H2 g-VS−1 h−1. Pre-hydrolyzing the biomass at 50 °C for 12 h resulted in the production of 1.8 g/L of reducing sugars, leading to a hydrogen yield (HY) of 172 mL-H2 g-VS−1. Using PSSF, the fermentation time was shortened by 36 h in which a productivity of 2.4 mL-H2 g-VS−1 h−1 was attained. To the best of our knowledge, the present study is the first report on the use of SSF and PSSF for hydrogen production from microalgal biomass, and the HY obtained in the study is by far the highest yield reported. Our results indicate that PSSF is a promising process for hydrogen production from microalgal biomass.

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