Biological hydrogen production from nitrogen-deficient substrates

✍ Scribed by Sasha D. Hafner

• Book ID: 101723817
• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 101 KB
• Volume: 97
• Category: Article
• ISSN: 0006-3592
• DOI: 10.1002/bit.21279

✦ Synopsis

Dark fermentation of biomass using mixed bacterial cultures is one approach to producing renewable H 2 . The objective of this work was to determine if this approach could be applied to N-deficient feedstocks using an N 2 -fixing mixed culture. A mixed culture produced up to 240 mL H 2 /g glucose (1.9 mol H 2 /mol glucose) from a medium initially lacking combined N. Yields from sugarcane were also promising: 170 mL H 2 /g volatile solids (7.5 mmol H 2 /g volatile solids). This approach could reduce economic and environmental costs of fermentative H 2 production, provide combined N for subsequent bioconversion stages, and improve effluent suitability for subsequent uses.