Hydrogen production with high yield and high evolution rate by self-flocculated cells of Enterobacter aerogenes in a packed-bed reactor

1998 ◽  
Vol 49 (4) ◽  
pp. 450-454 ◽  
Author(s):  
M. A. Rachman ◽  
Y. Nakashimada ◽  
T. Kakizono ◽  
N. Nishio
Keyword(s):  
Hydrogen Production ◽  
Enterobacter Aerogenes ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
Evolution Rate ◽  
High Yield

Simulation of hydrogen production through chemical looping reforming process in a packed-bed reactor

2016 ◽  
Vol 105 ◽  
pp. 137-151 ◽  
Author(s):  
Giuseppe Diglio ◽  
Piero Bareschino ◽  
Erasmo Mancusi ◽  
Francesco Pepe
Keyword(s):  
Hydrogen Production ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
Chemical Looping

Hydrogen production in an upflow anaerobic packed bed reactor used to treat cheese whey

2013 ◽  
Vol 38 (1) ◽  
pp. 54-62 ◽  
Author(s):  
V. Perna ◽  
E. Castelló ◽  
J. Wenzel ◽  
C. Zampol ◽  
D.M. Fontes Lima ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Cheese Whey ◽  
Packed Bed ◽  
Packed Bed Reactor

scholarly journals Comparison of Packed-Bed and Micro-Channel Reactors for Hydrogen Production via Thermochemical Cycles of Water Splitting in the Presence of Ceria-Based Catalysts

Processes ◽  
2019 ◽  
Vol 7 (10) ◽  
pp. 767 ◽  
Author(s):  
Ngoenthong ◽  
Hartley ◽  
Sornchamni ◽  
Siri-nguan ◽  
Laosiripojana ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Packed Bed ◽  
Fluorite Structure ◽  
Packed Bed Reactor ◽  
Temperature Program Reduction ◽  
Micro Channel ◽  
Reduction Temperature ◽  
Channel Reactor ◽  
Thermochemical Cycles ◽  
Program Reduction

Hydrogen production via two-step thermochemical cycles over fluorite-structure ceria (CeO2) and ceria-zirconia (Ce0.75Zr0.25O2) materials was studied in packed-bed and micro-channel reactors for comparison purposes. The H2-temperature program reduction (H2-TPR) results indicated that the addition of Zr4+ enhanced the material’s reducibility from 585 µmol/g to 1700 µmol/g, although the reduction temperature increased from 545 to 680 °C. Ce0.75Zr0.25O2 was found to offer higher hydrogen productivity than CeO2 regardless of the type of reactor. The micro-channel reactor showed better performance than the packed-bed reactor for this reaction.

scholarly journals Simultaneous Coproduction of Hydrogen and Ethanol in Anaerobic Packed-Bed Reactors

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Cristiane Marques dos Reis ◽  
Edson Luiz Silva
Keyword(s):  
Hydrogen Production ◽  
Ethanol Production ◽  
Production Rate ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
Hydrogen Yield ◽  
Hydrogen Production Rate ◽  
Clear Trend ◽  
Packed Bed Reactors ◽  
High Ethanol

This study evaluated the use of an anaerobic packed-bed reactor for hydrogen production at different hydraulic retention times (HRT) (1–8 h). Two reactors filled with expanded clay and fed with glucose (3136–3875 mg L−1) were operated at different total upflow velocities: 0.30 cm s−1(R030) and 0.60 cm s−1(R060). The effluent pH of the reactors was maintained between 4 and 5 by adding NaHCO3and HCl solutions. It was observed a maximum hydrogen production rate of 0.92 L H2 h−1 L−1in R030 at HRT of 1 h. Furthermore, the highest hydrogen yield of 2.39 mol H2 mol−1glucose was obtained in R060. No clear trend was observed by doubling the upflow velocities at this experiment. High ethanol production was also observed, indicating that the ethanol-pathway prevailed throughout the experiment.

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