ScienceDaily shares links with sites in the. "To recycle carbon dioxide into methane, an established industrial method involves the reaction of hydrogen and carbon dioxide using a ruthenium-based catalyst at … "To recycle carbon dioxide into methane, an established industrial method involves the reaction of hydrogen and carbon dioxide using a ruthenium-based catalyst at temperatures of 300 to 400 degrees Celsius, but this method limited how much and when methane could be produced since it requires such high temperature," Sekine says. However, they use different starting materials, like acetate. New method converts carbon dioxide to methane at low temperatures. “It’s exciting,” he said of the new report. Scientists have engineered a bacterium that can take carbon dioxide from the air and turn it into fuel in a single enzymatic step. However, the new nitrogenase isn’t anywhere near as efficient at producing methane from carbon dioxide as it is at making ammonia from nitrogen gas. Or view hourly updated newsfeeds in your RSS reader: Keep up to date with the latest news from ScienceDaily via social networks: Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. “The normal enzyme makes about two hydrogens for every [molecule of] ammonia,” Harwood said. But this modified enzyme was tediously produced in test tubes at small scales, which isn’t good enough for a process that might one day produce industrial quantities of biofuels. "The results show that the catalyst exhibited high and stable catalytic activity for converting carbon dioxide to methane through hydrogenation with the electric field.". The ratio of mcrA/pmoA genes correlated with methane emission from ambient and FACE paddy plots at the PI stage. (2020, February 27). “We wanted to see if we could get an actual living organism to do this conversion,” Harwood said. “The process that’s naturally occurring is still more efficient, but because of the simplicity of this engineered organism, it would make it easier to manipulate the process,” Lessner said. In this newly-developed method reported in Chemistry Letters, carbon dioxide can be converted into methane more efficiently and quickly in the 100 degrees Celsius range. Some of her collaborators managed to isolate and alter nitrogenase to use the most oxidized form of carbon, carbon dioxide, as its starting material and produce the most reduced form of carbon — methane. The researchers found that the modified nitrogenase could no longer fix nitrogen, but it could produce methane and hydrogen when the bacteria were illuminated. “What you need then is not just one microorganism but multiple microorganisms.”. The enzyme uses adenosine triphosphate (ATP), a compound that serves as an energy currency in cells. Waseda University. ScienceDaily. Subscribers get more award-winning coverage of advances in science & technology. On the other hand, the new engineered nitrogenase in R. palustris converts carbon dioxide into methane on its own in a single step, simplifying the process. Holiday Sale: Save 25%, If scaled up, batches of bacteria could convert CO2 emissions into fuel, in a single step. In its natural state, the bacterium absorbs sunlight to produce ATP, so light helped generate the energy to power the enzyme in the modified cells. “The methanogens require other microbes to provide them with other electron donors,” he said. "New method converts carbon dioxide to methane at low temperatures." . www.sciencedaily.com/releases/2020/02/200227114523.htm (accessed November 28, 2020). Reprinted from ClimateWire with permission from Environment & Energy Publishing, LLC. Scientists have engineered a bacterium that can take carbon dioxide from the air and turn it into fuel in a single enzymatic step. Financial support for ScienceDaily comes from advertisements and referral programs, where indicated. For instance, some plants in Germany have already been launched based on the Power to Gas concept, which allows energy from electricity to be stored and transported in the form of compressed gas. The abundance of methane-oxidizing bacteria was significantly decreased by elevated [CO2] and LN in both soil layers at the rice MR stage and by ET in the upper soil layer. Explore our digital archive back to 1845, including articles by more than 150 Nobel Prize winners. "New method converts carbon dioxide to methane at low temperatures." 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Rex Had Huge Growth Spurts, but Other Dinos Grew Slow and Steady, Largest Aggregation of Fishes in Abyssal Deep Sea, Very Hungry and Angry, Caterpillars Head-Butt to Get What They Want, The Secret Social Lives of Giant Poisonous Rats, Truffle Munching Wallabies Shed New Light on Forest Conservation, Geoscientists Discover Ancestral Puebloans Survived from Ice Melt in New Mexico Lava Tubes, Large Predatory Fish Thrive on WWII Shipwrecks Off North Carolina Coast. Harwood said her team is now investigating whether they can tweak the enzyme to improve its efficiency in reducing carbon dioxide, as well as looking for other useful chemicals they could make. Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Discover world-changing science.