Novel Hydrogen Bioreactor and Detection Apparatus.

Area of Science:

• Biotechnology
• Renewable Energy
• Chemical Engineering

Background:

• Hydrogen is a key commodity chemical with potential as a future transportation fuel.
• Enzymatic biotransformation (SyPaB) allows hydrogen storage in carbohydrates.
• Biohydrogen production offers solutions for distributed energy, reduced CO2, and cost-effectiveness.

Purpose of the Study:

• To introduce a novel bioreactor for enzymatic hydrogen generation.
• To develop an alternative calibration method for hydrogen sensors.
• To demonstrate high-rate biohydrogen production from carbohydrates.

Main Methods:

• Design and implementation of a novel bioreactor for oxygen-free enzymatic hydrogen generation.
• Development of a flow calibration method for continuous hydrogen sensors.
• Enzymatic conversion of glucose and glucose 6-phosphate to hydrogen.

Main Results:

• The novel bioreactor successfully maintained an oxygen-free environment for hydrogen generation.
• A flow calibration method was introduced as an alternative to electrolysis.
• High hydrogen production rates were achieved, including 157 mmol/L/h from glucose 6-phosphate at 60 °C.

Conclusions:

• The developed bioreactor and calibration method are effective for in vitro biohydrogen generation.
• Enzymatic conversion of carbohydrates offers a promising route for sustainable hydrogen fuel production.
• The system demonstrates potential for efficient, distributed bioenergy applications.