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Biohydrogen production from anaerobic digestion of carbohydrate organic matter.

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Hiligsmann Serge, Masset Julien, Beckers Laurent, Hamilton Christopher, Thonart Philippe

Centre Wallon de Biologie Industrielle /

Walloon Centre for Industrial Biology

University of Liege, B40. B-4000 Sart-Tilman. BELGIUM

Faculty of Agricultural Sciences. Passage des Déportés, 2 B-5030 Gembloux. BELGIUM

.

Investigations carried out by CWBI

• Selection and characterization of bacteria strains

• Optimization of culture conditions for the most interesting bacteria strains i.e.

Clostridium sp : influence of pH and H2

partial pressure, …

• Design of highly efficient bioreactors : biofilm formation, H2 transfer, …

• Scale-up of the biotechnological process : 20 L 650 L, fuel cell operation, biomethanisation, …

Biohydrogen production from

anaerobic digestion of carbohydrate organic matter

Two microbial pathways for biohydrogen production

Dark fermentation Photo fermentation Phototrophic microorganisms Carbone Source Light Anaérobiosis, Nutrients Chemotrophic microorganisms CO2+ H2 Alcohols, acids, ... in aqueous solution ... 6CO2+ 12H2 ... 2CH3COOH + 2CO2+ 4H2

C6H12O6 C6H12O6 Carbone Source Phototrophic microorganisms Carbone Source Light Anaérobiosis, Nutrients Chemotrophic microorganisms CO2+ H2 Alcohols, acids, ... in aqueous solution ... 6CO2+ 12H2 ... 2CH3COOH + 2CO2+ 4H2

C6H12O6 C6H12O6

Carbone Source

Dark fermentation is more

adapted for industrial H

2

production from wastewater

and biomass

Pollution reduction

Energy generation

http://cwbi.fsagx.ac.be

Biotechnological process

Residual organic matter Bioreactor I Bioreactor II CO2+ H2 Biogas

treatment Fuel cell

CO2+ CH4

Engine or

steam power Steam and mechanic energy Ultimate treatment Brewery effluents 10 000 m3/d wastewaters 1400 mg/L DBO5 3000 m3H2 375 kW 150 kW + hot water 1000 kW Natural environment 225 kW 750 kW Residual organic matter Bioreactor I Bioreactor II CO2+ H2 Biogas

treatment Fuel cell

CO2+ CH4

Engine or

steam power Steam and mechanic energy Ultimate treatment Brewery effluents 10 000 m3/d wastewaters 1400 mg/L DBO5 3000 m3H2 375 kW 150 kW + hot water 1000 kW Natural environment 225 kW 750 kW

Références

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