Photosynthetic electron focusing technology for direct efficient biohydrogen production from solar energy

Introduction

We propose a disruptive technology based on synthetic biology, which we call photosynthetic electron focusing, for the efficient production of hydrogen using low-cost photosynthetic bacteria (cyanobacteria) genetically re-engineered to exclusively direct the solar energy to hydrogen.

Energy Efficiency

Through the development of new high-efficiency large-scale photobioreactors, we will obtain an unprecedented increase in energy efficiency, up to ten-fold higher than current approaches.

Cost Estimates

Our theoretical estimates for the production costs could be as low as $5/Kg of H2, making our technology potentially comparable to current photovoltaic systems coupled with electrolysis.

Adaptability and Sustainability

Our bacteria could be adapted and grown in seawater and wastewater. Moreover, it would not require the use of Critical Raw Materials or toxic processes.

Technological Approach

Our biological route involves using fermentation-like technologies, with expertise available in many sectors such as the food industry. It will also employ contained bioreactors, constructed with simple fabrication technologies, which are decreasing in cost. For example, the cost of 3D printing materials is decreasing much faster than the cost of microfabrication.

Validation

We will validate our engineered cyanobacterium in a custom 1,300 L photobioreactor, which will be able to produce validated innovative green H2 production technology. This proof-of-concept production will be located in a hydrogen industrial stakeholder to ensure the large-scale relevance of our production.