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Bioreactor process for production of hydrogen from biomass

A bioreactor, biomass technology, applied in the direction of gas production bioreactors, microorganism-based methods, specific-purpose bioreactors/fermenters, etc., which can solve problems such as difficult-to-cultivate cultures

Inactive Publication Date: 2012-05-16
UNIVERSITY OF THE WITWATERSRAND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it has been found that the hydrolysis of cellulosic materials and the production of hydrogen from said hydrolysates have become increasingly favorable under the action of mixed bacterial consortia, including anaerobic cellulolytic species, most Thermophiles and extreme thermophiles are difficult to grow and maintain in pure cultures

Method used

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  • Bioreactor process for production of hydrogen from biomass
  • Bioreactor process for production of hydrogen from biomass
  • Bioreactor process for production of hydrogen from biomass

Examples

Experimental program
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Embodiment Construction

[0067] refer to figure 1 , a bioreactor 10 for producing hydrogen from biomass comprises a cylindrical reactor vessel 12 having a fluidized bed 14 of hydrogen-producing bacteria 16 proximate a bottom region 18 thereof. The reactor vessel 12 has a biomass inflow conduit 20 located substantially in the middle of a wall 22 of the reactor vessel 12, and a degassed biomass effluent stream located substantially near the upper end 26 of the reactor vessel 12 Out of pipeline 24.

[0068] The rate at which biomass flows into the reactor vessel 12 through the biomass inflow conduit 20 is controlled by an inflow meter 28 . The rate at which degassed biomass effluent exits the reactor vessel 12 through the biomass effluent effluent conduit 24 is controlled by an effluent meter 30 . The reactor vessel 12 has a conical top 32 which functions as a gas harvesting device 34 . Harvested gas is conducted from the reactor vessel 12 through a gas release line 36 . The treated degassed biomass ...

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Abstract

This invention relates to bioreactor processes, particularly bioreactor processes for the production of hydrogen gas from biomass, more particularly to bioreactor processes for the production of hydrogen gas employing a mixed anaerobic thermophilic bacterial consortium during the anaerobic fermentation of biomass.

Description

technical field [0001] The present invention relates to bioreactor processes, in particular to bioreactor processes for the production of hydrogen and / or carbon dioxide from biomass, and more particularly to soluble hydrolysates obtained from the hydrolysis of cellulosic materials, including hemicellulose A bioreactor process in which a mixed anaerobic bacterial consortium (especially a mixed anaerobic thermophilic bacterial consortium) is used to produce hydrogen and / or carbon dioxide in the anaerobic fermentation of . [0002] definition [0003] The definitions of the following terms included in the description of the present invention are as follows: [0004] "HP" hydrogen productivity [0005] "HY" hydrogen yield (hydrogen yield) Background technique [0006] The production of hydrogen and ethanol and other fermentation products from biomass (especially plant biomass) is becoming an increasingly attractive option for producing alternative fuels due to the increase in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12M1/107C12M1/36
CPCC12M25/20C12M21/04C12M29/18C12P1/04C12P3/00C12N1/205C12R2001/01
Inventor 文森特·迈尔斯·格雷
Owner UNIVERSITY OF THE WITWATERSRAND