Kinetic study of biological hydrogen production by anaerobic fermentation

2006 ◽  
Vol 31 (15) ◽  
pp. 2170-2178 ◽  
Author(s):  
W CHEN ◽  
S CHEN ◽  
S KUMARKHANAL ◽  
S SUNG
Keyword(s):  
Hydrogen Production ◽  
Kinetic Study ◽  
Anaerobic Fermentation ◽  
Biological Hydrogen Production

Rapid Start-Up of Ethanol-Type Fermentation in Biological Hydrogen Production Reactor from Molasses Wastewater

2010 ◽  
Vol 113-116 ◽  
pp. 623-631
Author(s):  
Li Ran Yue ◽  
Yong Feng Li ◽  
Wei Han ◽  
Jing Li Xu ◽  
Hong Chen ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Ph Value ◽  
Anaerobic Fermentation ◽  
Oxygen Demand ◽  
Low Ph ◽  
Continuous Stirred Tank Reactor ◽  
Fermentation Products ◽  
Biological Hydrogen Production ◽  
Molasses Wastewater ◽  
Start Up

Research on anaerobic fermentation biohydrogen production from molasses wastewater in a continuous stirred-tank reactor (CSTR) was conducted. Emphasis was focused on the rapid start-up of ethanol-type fermentation in biological hydrogen production reactor. It was found that an initial biomass of 17.71 g/L, temperature of 35°C±1°C, hydraulic retention time (HRT) of 6 h, the reactor could start-up the ethanol-type fermentation at the range of 2000-4000 mg/L and at pH from 3.23 to 4.39 in 12 days with COD (chemical oxygen demand), respectively. The content of hydrogen was 45.77% in the fermentation biogas and the COD removal was 8%. As the hydrogen production system experienced low pH (3.23-4.0), the ethanol-produce bacterial can resume easier compared with other fermentation bacteria which are difficult to restore. In addition, when the pH value ranged from 4.0 to 4.63, the hydrogen production increased with the content of ethanol in liquid fermentation products increased. However, it was detected that the yield of hydrogen decreased with a high content of ethanol in the pH value ranged from 3.23 to 4.0, which demonstrated pH value played the most important role on hydrogen production within low pH.

scholarly journals Enhanced biohydrogen production from nutrient-free anaerobic fermentation medium with edible fungal pretreated rice straw

RSC Advances ◽  
2018 ◽  
Vol 8 (41) ◽  
pp. 22924-22930 ◽  
Author(s):  
Tao Sheng ◽  
Lei Zhao ◽  
Lingfang Gao ◽  
Wenzong Liu ◽  
Guofeng Wu ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Rice Straw ◽  
Anaerobic Fermentation ◽  
Fermentation Medium ◽  
Biohydrogen Production ◽  
Biological Hydrogen Production ◽  
Fungal Pretreatment

An edible fungal pretreatment of rice straw was proposed for enhanced hydrogen production while reducing the chemical cost for traditional biological hydrogen production from lignocellulose.

scholarly journals Kinetic Study on the Effect of Substrate and Micronutrient Inhibition during Anaerobic Fermentation of Biohydrogen

2022 ◽  
Vol 05 (01) ◽  
Author(s):  
Nurul Sakinah Engliman ◽  
Keyword(s):  
Hydrogen Production ◽  
Kinetic Study ◽  
Substrate Concentration ◽  
Iron Nanoparticles ◽  
Anaerobic Fermentation ◽  
Substrate Inhibition ◽  
Economic Feasibility ◽  
Inhibition Effect ◽  
Production Of Hydrogen ◽  
Substrate Ph

There are several factors that influence the production of biohydrogen by dark fermentation including inoculum seeds, type and concentration of substrate, pH, temperature, presence of micronutrient and reactor configuration. Previous research has proven that the concentration of substrate and the presence of micronutrient will influence the yield and productivity of biohydrogen production. However, improvement of yield and productivity of the process can only be achieved once the system is under the optimum amount of substrate and micronutrient. Therefore, the best way to determine the effect of substrate concentration and presence of micronutrient is through kinetic study that was done using Monod model along with Andrews model. Besides that, the substrate inhibition effect also will be evaluated to determine the maximum substrate that needs to be supplied for maximum hydrogen production, and thus supplied the information for economic feasibility for fermentation process. In the meantime, the inhibition effect of adding the iron nanoparticles also had been evaluated in order to understand the interaction effect between iron nanoparticles and bacteria in term of catabolism reaction. It was found that increasing the substrate concentration more than 10 g/l will cause the inhibition to the system, in which it will slow down the reaction process and reduced the production of hydrogen. While the presence of iron NPs more than its optimum value (200 mg/l) will inhibit the bacterial growth and hence, affect the hydrogen production. For both cases, when the inhibition occurred at the respective concentration, it was found that the metabolic pathway was shifted to produce more hydrogen-consuming metabolite such as propionate acid, and thus, dropped the hydrogen production.

Patent Landscape for Biological Hydrogen Production

2014 ◽  
Vol 7 (3) ◽  
pp. 207-213 ◽  
Author(s):  
David Levin ◽  
Simona Lubieniechi
Keyword(s):  
Hydrogen Production ◽  
Biological Hydrogen Production ◽  
Patent Landscape

The preparation and application of crude cellulase for cellulose-hydrogen production by anaerobic fermentation

2010 ◽  
Vol 35 (2) ◽  
pp. 459-468 ◽  
Author(s):  
Yi-Ping Guo ◽  
Shao-Qun Fan ◽  
Yao-Ting Fan ◽  
Chun-Mei Pan ◽  
Hong-Wei Hou
Keyword(s):  
Hydrogen Production ◽  
Anaerobic Fermentation
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