Scientists at PNNL are charting a profitable course for carbon capture through carbon upcycling, unlocking a crucial step in the decarbonization process and moving closer to achieving net zero emissions. The requirement for technology that can capture, eliminate, and recycle carbon dioxide grows
explores the cost of running the methanol system using different PNNL-developed capture solvents, and that figure has now dropped to just below $39 per metric ton of CO-binding solvents in this new study,” said chemical engineer Yuan Jiang, who led the assessment. “We found that they capture over 90 percent of the carbon that passes through them, and they do so for roughly 75 percent of the cost of traditional capture technology.
Different systems can be used depending on the nature of the plant or kiln. But, no matter the setup,2is not new. But the ability to both capture carbon and then convert it into methanol in one continuously flowing system is. Capture and conversion has traditionally occurred as two distinct steps, separated by each process’s unique, often non-complementary chemistry.
“We’re finally making sure that one technology can do both steps and do them well,” said Heldebrant, adding that traditional conversion technology typically requires highly purified CODialing down tomorrow’s emissions-negative. The carbon in methanol is released when burned or sequestered when methanol is converted to substances with longer lifespans.
Other target materials include polyurethanes, which are found in adhesives, coatings, and foam insulation, and polyesters, which are widely used in fabrics for textiles. Once researchers finalize the chemistry behind converting COinto materials that keep it out of the atmosphere for climate-relevant timescales, a wide web of capture systems could be poised to run such reactions.refineries built into or alongside power plants, where CO-containing products can be made on-site.
References: “Energy-effective and low-cost carbon capture from point-sources enabled by water-lean solvents” by Yuan Jiang, Paul M. Mathias, Richard F. Zheng, Charlies J. Freeman, Dushyant Barpaga, Deepika Malhotra, Phillip K. Koech, Andy Zwoster, and David J.
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