![]() The work was funded by ExxonMobil, which is working with both the Berkeley group and Long's start-up, Mosaic Materials Inc., to develop, scale up and test processes for stripping CO 2 from emissions. The cost of scrubbing the emissions would have to be facilitated by government policies, such as carbon trading or a carbon tax, to incentivize CO 2 capture and sequestration, something many countries have already implemented. "These materials, at least from the experiments we have done so far, look very promising."īecause there's little market for most captured CO 2, power plants would likely pump most of it back into the ground, or sequester it, where it would ideally turn into rock. It is rightly seen as the cheapest way to do it," said senior researcher Jeffrey Long, UC Berkeley professor of chemistry and of chemical and biomolecular engineering and senior faculty scientist at Berkeley Lab. "For CO 2 capture, steam stripping-where you use direct contact with steam to take off the CO 2-has been a sort of holy grail for the field. ![]() The process uses low temperature steam to regenerate the MOF for repeated use, meaning less energy is required for carbon capture. In experiments, the technique showed a six times greater capacity for removing CO 2 from flue gas than current amine-based technology, and it was highly selective, capturing more than 90% of the CO 2 emitted. Developed by researchers at the University of California, Berkeley, Lawrence Berkeley National Laboratory and ExxonMobil, the new technique uses a highly porous material called a metal-organic framework, or MOF, modified with nitrogen-containing amine molecules to capture the CO 2 and low temperature steam to flush out the CO 2 for other uses or to sequester it underground.
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