Carbon dioxide conversion process may be adapted for biofuel synthesis
Using a novel approach involving a key enzyme that helps regulate global nitrogen, University of California, Irvine molecular biologists have discovered an effective way to convert carbon dioxide (CO2) to carbon monoxide (CO) that can be adapted for commercial applications like biofuel synthesis.
Led by Yilin Hu, UCI assistant professor of molecular biology & biochemistry at the Ayala School of Biological Sciences, the researchers found that they could successfully express the reductase component of the nitrogenase enzyme alone in the bacterium Azotobacter vinelandii and directly use this bacterium to convert CO2 to CO. The intracellular environment of the bacterium was shown to favor the conversion of CO2 in a way that would be more applicable to the future development of strategies for large-scale production of CO. The findings were surprising to the group, as nitrogenase was only previously believed to convert nitrogen (N2) to ammonia (NH3) within the bacterium under similar conditions. The full study can be found online in Nature Chemical Biology.
Hu and her colleagues knew that the intracellular environment of the bacterium Azotobacter vinelandii favors other reduction reactions, due in part to its well-known oxygen protection mechanisms and presence of physiological electron donors. But they were unsure if the intracellular environment would support the conversion of CO2 to CO.
They were excited to discover that the bacterium could reduce CO2 and release CO as a product, which makes it an attractive whole-cell system that could be explored further for new ways of recycling atmospheric CO2 into biofuels and other commercial chemical products. These findings of Hu’s group establish the nitrogenase enzyme as a fascinating template for developing approaches to energy-efficient and environmentally-friendly fuel production.
“Our observation that a bacterium can convert CO2 to CO opens up new avenues for biotechnological adaptation of this reaction into a process that effectively recycles the greenhouse gas into the starting material for biofuel synthesis that will help us simultaneously combat two major challenges we face nowadays: global warming and energy shortages,” Hu said.
Receive an email update when we add a new CO2 TO FUEL article.
The Latest on: CO2 to fuel
via Google News
The Latest on: CO2 to fuel
- European M&A propels 2018 power and utilities deal value to all-time high on February 19, 2019 at 1:49 am
Reforms pave the way for Europe's clean energy transition European Union (EU) energy market reforms, including raising 2030 renewable energy targets, mandating Co2 caps on transport and removing capac... […]
- EU backs cuts to CO2 emissions from trucks on February 19, 2019 at 1:49 am
Heavy trucks are responsible for around 6 percent of the bloc's total CO2 emissions, and they're also currently used ... standards "will help tackle emissions, as well as bring fuel savings to transpo... […]
- Clean mobility: Putting an end to polluting trucks. Commission welcomes first-ever EU standards to reduce pollution from trucks on February 19, 2019 at 1:11 am
Today’s deal follows the agreement reached in December on new CO2 emission standards for cars and light vans ... strengthen the competitiveness of EU industry and stimulate employment, while reducing ... […]
- A CO2 sponge: Arizona scientist working to combat rising carbon dioxide levels on February 18, 2019 at 10:10 pm
Carbon dioxide made up 81 percent of all greenhouse ... The report noted an increased demand for air travel and diesel fuel as the leading causes. “The transportation sector retained its title ... […]
- Smart Ideas: Swiss Scientists Look to Make Fuel From Air on February 18, 2019 at 6:08 pm
Air-captured CO2 can be combined with hydrogen and then fashioned into any kind of fossil-fuel substitute you want. Instead of making bread from air, you can make fuels from air." And ultimately, they ... […]
- Letters: New Orleans' new airport is going to worsen carbon emissions on February 18, 2019 at 4:17 pm
Beyond the CO2 issue, there is the is the new “airport wall” or sound barrier on Aberdeen Avenue, which divides the neighborhood of Susan Park in half. Other environmental issues are the jet fuel pipe... […]
- We Need A Fossil Fuel Primer Because The Media Isn’t Telling Us Enough About Climate Change on February 18, 2019 at 4:59 am
Over the years, the ratio of heavy to light carbon atoms has decreased as the overall amount of CO2 has increased. This information tells scientists that fossil fuel emissions are the largest ... […]
- Artificial Leaves Convert CO2 to Fuel 10 Times More Efficient Than Nature on February 17, 2019 at 11:46 pm
Artificial leaves mimic photosynthesis -- the process whereby plants use water and carbon dioxide from the air to produce carbohydrates using energy from the sun. But even state-of-the-art artificial ... […]
- Biofuels are key to reducing carbon dioxide emissions on February 16, 2019 at 3:32 am
“That’s just one example of a Minnesota biofuel company that is helping strengthen our economy while decreasing our dependence on foreign oil,” Klobuchar said two years ago in a statement that also me... […]
via Bing News