The production of electrofuels requires the efficient transport of electrons from an electrochemical system into a biological system. We have approached this challenge by identifying natural chemical mediators that
- can be easily reduced electrochemically and
- are natural substrates for different bacterial strains, thus eliminating the need to engineer this aspect of primary metabolism in the biological hosts.
In our first project we have constructed a reverse microbial fuel cell using the ammonia oxidizing bacteria, N. europaea. These cells grow planktonically and they efficiently oxidize ammonia to nitrite while fixing carbon dioxide. We have developed an electrochemical reactor to reduce the nitrite back to ammonia so that we are producing biomass from electricity and air. We have recently engineered the N. europaea cells to produce isobutanol, which is a transportation infrastructure compatible biofuel.
In a second project we are working with A. ferrooxidans, which is an iron oxidizing bacteria used in biomining operations. The oxidized iron can be readily reduced electrochemically, and efforts are underway to engineer these cells to make isobutanol as well. As these processes are developed and optimized, they may be able to produce biofuels and other petroleum derived chemicals from electricity and air.
Would you like to access this content?
No problem. You just have to complete the following steps.
You have completed 0 of 2 steps.
You must be logged in to view this content. Log in now.
You must purchase this webinar using one of the options below.
If you already purchased this content recently, please click here to refresh the system's record of ownerships.
|Credits||1 Use credits|
|List Price||$99.00 Buy now|
|AIChE Members||$69.00 Buy now|
|AIChE Undergraduate Student Members||Free Free access|
|AIChE Graduate Student Members||$69.00 Buy now|
|SBE Members||Free Free access|