President, International Technical Development Management, LLC | Founder, The John L. Robinson Educational Fund
"Prototype device produces critical fertilizer ingredient from thin air, cutting carbon emissions" (Tech Xplore) December 13, 2024 | Provided by Stanford University "The air around us contains a powerful solution for making agriculture more sustainable. Researchers at Stanford University and King Fahd University of Petroleum & Minerals - KFUPM in #Saudi Arabia have developed a prototype device that can produce ammonia—a key fertilizer ingredient—using wind energy to draw air through a mesh. The approach they developed, if perfected, might eliminate the need for a century-old method that produces ammonia by combining nitrogen and hydrogen at high pressures and temperatures. The older method consumes 2% of global energy and contributes 1% of annual carbon dioxide emissions from its reliance on natural gas. The study, published Dec. 13 in Science Advances (https://lnkd.in/gFFpjvNf), involved the first on-site—rather than in a lab—demonstration of the technology. The researchers envision someday integrating the device into irrigation systems, enabling farmers to generate fertilizer directly from the air. 'This breakthrough allows us to harness the nitrogen in our air and produce ammonia sustainably,' said study senior author Richard Zare, the Marguerite Blake Wilbur Professor in Natural Science at the Stanford School of Humanities and Sciences. 'It's a significant step toward a decentralized and eco-friendly approach to agriculture.'" "The Stanford team's process makes ammonia cleanly and inexpensively and utilizes the surrounding air to get nitrogen and hydrogen from water vapor. ... Farmers could run the portable device onsite, eliminating the need to purchase and ship fertilizer from a manufacturer." "In laboratory experiments, the team demonstrated further potential by recycling water through a spraying system, achieving ammonia concentrations sufficient to fertilize plants grown in a greenhouse after just two hours. By incorporating a filter made from a microporous stone material, this approach could produce enough ammonia to support broader agricultural applications." "The device is two to three years away from being market-ready, according to study co-author Basheer Chanbasha of King Fahd University of Petroleum & Minerals. In the meantime, the researchers plan to use increasingly large mesh systems to produce more ammonia. 'There is a lot of room to develop this,' Basheer said. Ammonia's importance extends beyond fertilizers. As a clean energy carrier, it can store and transport renewable energy more efficiently than hydrogen gas due to its higher energy density. The innovation positions ammonia as a linchpin in decarbonizing industries like shipping and power generation. 'Green ammonia represents a new frontier in sustainability,' Zare said. 'This method, if it can be scaled up economically, could drastically reduce our reliance on fossil fuels across multiple sectors.'" Dick Zare https://lnkd.in/gd5bB-Km
