Transportation

Invizyne Technologies proposes an electrically powered cell-free enzymatic approach for upgrading ethanol into more useful chemicals. Because carbon for 99% of organic chemicals is petroleum-derived, replacing petroleum carbon with carbon captured from the atmosphere could greatly mitigate carbon emissions. Atmospheric CO2 represents a potentially limitless source of inexpensive carbon, but there are significant challenges to converting captured CO2 into useful chemicals and fuels.

QuesTek Innovations will apply computational materials design, additive manufacturing (AM), coating technology, and turbine design/manufacturing to develop a comprehensive solution for a next-generation turbine blade alloy and coating system capable of sustained operation at 1300°C.

Advanced Conductor Technologies will develop two-pole, high-temperature, superconducting DC power cables and connectors with a power rating of up to 50 MW to enable twin-aisle aircraft with distributed electric propulsion to reduce carbon emissions. The cables and connectors will contain insulation independent of the cryogenic medium used as coolant and allow an operating voltage of 10 kV. Because they have intrinsic fault current limiting capabilities, the cables can protect the power distribution network from over-currents.

ZymoChem will develop carbon- and energy-efficient biocatalysts capable of co-conversion of one-carbon molecules and biomass-derived substrates to a high-volume platform fuel and chemical intermediate. The team will demonstrate a carbon-conserving process decoupling growth and production. Most bioprocesses using microbes and renewable feedstocks to make fuels and chemicals are unprofitable, precluding their adoption on the industrial scale.

Stanford University is developing a commercially attractive, scalable, carbon-negative technology for producing commodity biochemicals. Glucose, carbon dioxide (CO2), and electricity will provide the required atoms and energy for carbon-negative, energy-positive production. Instead of releasing CO2 into the atmosphere, this new approach will enable use of atmospheric CO2 and glucose obtained from cornstarch to produce renewable fuels and chemicals.

The University of Washington will develop cell-free (in vitro) platforms that produce functional multi-enzyme systems and perform the cost-effective bioconversion of CO2 into industrial chemicals. Cell-free transcription-translation (TXTL) is a popular, robust approach for producing cell-free biocatalytic systems capable of complex, multi-enzyme reactions.

The University of California, Irvine, proposes a cell-free enzymatic process as the first biological platform to convert carboxylic acids into a broad range of fuels and commodities with greater than 100% carbon efficiency. This is achieved using stabler bioenergy-storage and transmission molecules and specially engineered enzymes. Natural biological pathways for carboxylic acid conversion suffer from a low carbon yield, however.

ZymoChem has created fermentation processes that convert sugars into polymer precursors using microorganisms with novel enzyme-based pathways that avoid the loss of the sugar’s carbon as CO2. ZymoChem will develop two transformational innovations that combine (1) inexpensive metal catalysts from abundant metals for converting electricity and CO2 into formate and (2) electricity-compatible fermentation systems that enable microbes to co-utilize formate and sugars for the production of a high-volume platform fuel and chemical intermediate.

The University of Delaware aims to develop a platform technology based on synthetic syntrophic consortia of Clostridium microbes to enable fast and efficient use of renewable carbohydrates to produce targeted metabolites as biofuels or chemicals. In this syntrophic microbial consortium, two microbial species are co-cultured, allowing the different species to divide individual bioconversion steps and reduce their individual metabolic burden.

New propulsion and energy storage (ES) systems technologies, as well as the charging/fueling infrastructure, must be developed to fully decarbonize U.S. rail freight greenhouse gas (GHG) emissions. Northwestern will develop and apply analysis, evaluation, and decision tools to assess the effectiveness of technologies and deployment strategies to significantly reduce GHG emissions from the rail freight sector.