Biohydrogen production from wheat straw hydrolysate by dark fermentation using extreme thermophilic mixed culture

2010 ◽  
pp. n/a-n/a ◽  
Author(s):  
Prawit Kongjan ◽  
Sompong O-Thong ◽  
Meher Kotay ◽  
Booki Min ◽  
Irini Angelidaki
Keyword(s):  
Wheat Straw ◽  
Mixed Culture ◽  
Dark Fermentation ◽  
Biohydrogen Production ◽  
Wheat Straw Hydrolysate

Development of a method for biohydrogen production from wheat straw by dark fermentation

2011 ◽  
Vol 36 (1) ◽  
pp. 411-420 ◽  
Author(s):  
Nima Nasirian ◽  
Morteza Almassi ◽  
Saeid Minaei ◽  
Renatus Widmann
Keyword(s):  
Wheat Straw ◽  
Dark Fermentation ◽  
Biohydrogen Production

Characteristics of Biohydrogen Production by Mixed Culture Using Bagasse as the Substrate

2010 ◽  
Vol 113-116 ◽  
pp. 1749-1754
Author(s):  
An Ying Jiao ◽  
Yong Feng Li ◽  
Bing Liu ◽  
Kun Liu
Keyword(s):  
Gas Chromatography ◽  
Mixed Culture ◽  
Dark Fermentation ◽  
Biohydrogen Production ◽  
Hydrogen Yield ◽  
Batch Experiments ◽  
Ethanol Acetic Acid ◽  
Liquid Products ◽  
Initial Ph ◽  
Favorable Conditions

Batch culture of dark fermentation was carried out to study the feasibility of biohydrogen production using bagasse as the substrate. In dark fermentation, hydrogen was produced by mixed culture using bagasse as the substrate. To establish favorable conditions for maximum hydrogen production, process parameters such as temperature and initial pH of the medium were investigated. Also, the component of biogas and liquid products of effluent by fermentation were analyzed by gas chromatography. The VFAs were mostly ethanol, acetic acid, propionic acid and butyric acid, and no valeric acid was observed. It is demonstrated that the hydrogen yield reached the maximum of 30.5mlH2/g bagasse while the temperature was 35°C in batch experiments under a series of temperature (25, 30, 35, 40°C) conditions. The initial pH ranged from 6.8 to 8.5, and the yield of hydrogen reached the maximum of 32mlH2/g bagasse with the initial pH of 8.5.

scholarly journals Zeolite addition to improve biohydrogen production from dark fermentation of C5/C6-sugars and Sargassum sp. biomass

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
R. M. Silva ◽  
A. A. Abreu ◽  
A. F. Salvador ◽  
M. M. Alves ◽  
I. C. Neves ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Anaerobic Bacteria ◽  
Dark Fermentation ◽  
Inorganic Materials ◽  
Biohydrogen Production ◽  
High Rate ◽  
Continuous Reactor ◽  
Organic Loading Rate ◽  
Fermentation Products ◽  
Zeolite Type

AbstractThermophilic biohydrogen production by dark fermentation from a mixture (1:1) of C5 (arabinose) and C6 (glucose) sugars, present in lignocellulosic hydrolysates, and from Sargassum sp. biomass, is studied in this work in batch assays and also in a continuous reactor experiment. Pursuing the interest of studying interactions between inorganic materials (adsorbents, conductive and others) and anaerobic bacteria, the biological processes were amended with variable amounts of a zeolite type-13X in the range of zeolite/inoculum (in VS) ratios (Z/I) of 0.065–0.26 g g−1. In the batch assays, the presence of the zeolite was beneficial to increase the hydrogen titer by 15–21% with C5 and C6-sugars as compared to the control, and an increase of 27% was observed in the batch fermentation of Sargassum sp. Hydrogen yields also increased by 10–26% with sugars in the presence of the zeolite. The rate of hydrogen production increased linearly with the Z/I ratios in the experiments with C5 and C6-sugars. In the batch assay with Sargassum sp., there was an optimum value of Z/I of 0.13 g g−1 where the H2 production rate observed was the highest, although all values were in a narrow range between 3.21 and 4.19 mmol L−1 day−1. The positive effect of the zeolite was also observed in a continuous high-rate reactor fed with C5 and C6-sugars. The increase of the organic loading rate (OLR) from 8.8 to 17.6 kg m−3 day−1 of COD led to lower hydrogen production rates but, upon zeolite addition (0.26 g g−1 VS inoculum), the hydrogen production increased significantly from 143 to 413 mL L−1 day−1. Interestingly, the presence of zeolite in the continuous operation had a remarkable impact in the microbial community and in the profile of fermentation products. The effect of zeolite could be related to several properties, including the porous structure and the associated surface area available for bacterial adhesion, potential release of trace elements, ion-exchanger capacity or ability to adsorb different compounds (i.e. protons). The observations opens novel perspectives and will stimulate further research not only in biohydrogen production, but broadly in the field of interactions between bacteria and inorganic materials.

Biohydrogen production from thermochemically pretreated corncob using a mixed culture bioaugmented with Clostridium acetobutylicum

2021 ◽  
Author(s):  
Miguel A. Medina-Morales ◽  
Luis E. De la Cruz-Andrade ◽  
Lizeth A. Paredes-Peña ◽  
Thelma K. Morales-Martínez ◽  
José A. Rodríguez-De la Garza ◽  
...  
Keyword(s):  
Mixed Culture ◽  
Clostridium Acetobutylicum ◽  
Biohydrogen Production

Use of organic waste for biohydrogen production and volatile fatty acids via dark fermentation and further processing to methane

2019 ◽  
Vol 44 (44) ◽  
pp. 24110-24125 ◽  
Author(s):  
Tobias Weide ◽  
Elmar Brügging ◽  
Christof Wetter ◽  
Antonio Ierardi ◽  
Marc Wichern
Keyword(s):  
Fatty Acids ◽  
Organic Waste ◽  
Volatile Fatty Acids ◽  
Dark Fermentation ◽  
Biohydrogen Production
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