A newly isolated Rhodobacter sphaeroides HY01 with high hydrogen production performance

2014 ◽  
Vol 39 (19) ◽  
pp. 10051-10060 ◽  
Author(s):  
Honghui Yang ◽  
Jing Zhang ◽  
Xueqing Wang ◽  
Feng Jiangtao ◽  
Wei Yan ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Rhodobacter Sphaeroides ◽  
Production Performance ◽  
High Hydrogen

Enhancing Hydrogen Production Performance by Developing Thermotolerant Fermentative Mixed Consortium via High Temperature Stress Acclimation

2020 ◽  
Vol 14 (3) ◽  
pp. 340-348
Author(s):  
Jinyu Du ◽  
Qinglin Wu ◽  
Weixing Cao ◽  
Jian Wang ◽  
Nirmal Joshee ◽  
...  
Keyword(s):  
High Temperature ◽  
Hydrogen Production ◽  
Temperature Stress ◽  
High Temperature Stress ◽  
Production Performance ◽  
Biohydrogen Production ◽  
High Hydrogen ◽  
Metabolic Characteristics ◽  
Stress Acclimation ◽  
Tropical Areas

A thermotolerant fermentative mixed consortium (TFMC) has been screened by directional high temperature stress acclimation for biohydrogen production. The kinetics and metabolic characteristics of TFMC for hydrogen production at high temperature has also been studied. the TFMC can achieve stable hydrogen production under mesophilic conditions at 38 °C with the maximum potential hydrogen production of 665.09 mL, which is decreases by 9.27% as compared to the original mixed consortium at 30 °C. The TFMC also has characteristic of short lag time of 27 h which is 22 h lower than initial group and high hydrogen production rate of 9.48 mL/h which improved 12.9%. The newly obtained TFMC highlights a great potential for biohydrogen production in tropical areas.

High yield hydrogen production in a single-chamber membrane-less microbial electrolysis cell

2010 ◽  
Vol 61 (3) ◽  
pp. 721-727 ◽  
Author(s):  
Yejie Ye ◽  
Liyong Wang ◽  
Yingwen Chen ◽  
Shemin Zhu ◽  
Shubao Shen
Keyword(s):  
Hydrogen Production ◽  
Production Rate ◽  
Hydrogen Concentration ◽  
Current Density ◽  
Production Performance ◽  
Electrolysis Cell ◽  
Hydrogen Production Rate ◽  
High Hydrogen ◽  
Single Chamber ◽  
Hydrogen Recovery

The single-chamber membrane-less MEC exerted much better hydrogen production performance while given higher applied voltages than it did at lower. High applied voltages that could shorten the reaction time and the exposure of anode to air for at least 30 min between cycles can significantly suppress methanogen and increase hydrogen production. At an applied voltage of 1.0 V, a hydrogen production rate of 1.02 m3/m3/day with a current density of 5.7 A/m2 was achieved. Cathodic hydrogen recovery and coulombic efficiency were 63.4% and 69.3% respectively. The hydrogen concentration of mixture gas produced of 98.4% was obtained at 1.0 V, which was the best result of reports. The reasons that such a high hydrogen concentration can be achieved were probably the high electrochemical activity and hydrogen production capability of the active microorganisms. Increase in substrate concentrations could not improve MEC's performance, but increased the reaction times. Further, reactor configuration and operation factors optimisation should be considered to increase current density, hydrogen production rate and hydrogen recovery.

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