It looks as if baking soda is a key breakthrough in carbon capture and storage. Most countries were assuming a technology breakthrough that would allow them to take carbon out of the atmosphere. We should remember that if there is excess carbon dioxide in the atmosphere and it contributes to global warming then a key solution is to take this out of the atmosphere. This reality serves as the basis of a significant portion of the carbon reductions signed up for by various countries.
In a new breakthrough scientists have fashioned sponges made with baking soda to capture carbon emissions. They have tested microcapsules filled with their baking soda formula and believe their approach could be up to 40% cheaper than any existing technology.
One article cites Joshua Stolaroff, an environmental researcher at the Livermore Labs. He said, “Like all the commercial CO2 schemes we have today, the goal for large scale implementation is taking many tons of gas from a power plant and finding geological features deep underground where we can inject the CO2 and it will stay indefinitely.”
This leads us to the second development to be called out in research summarized in the June 10, 2016 issue of Science magazine. This article essentially says that 95% of carbon dioxide carbonizes and turns into benign carbonate minerals within two years when injected into a site in Iceland. This assumes the site has the appropriate chemistry and composition for carbon dioxide storage.
The carbon dioxide is dissolved in large amounts of water and then stored in porous basaltic rock. Here it undergoes a chemical transition to become a carbonate that binds to iron, calcium or magnesium, all of which are natural ingredients of the basalt.
Previously, scientists believed it would take hundreds if not thousands of years for carbon dioxide to harden underground. Obviously the faster the carbon dioxide turns to a harder material the better because it can be reused by other industries. An advantage of the microcapsule approach is that the carbon dioxide can be retrieved. If the baking soda solution is heated it turns into a form of gas that increases its value to others.
As said many times, there is reason for optimism in that human beings can find a solution or react fast enough to solve or diminish any problem we might identify. If we could only combine these two technologies or even if we can use them separately, it is clear we are making progress.
Taking carbon dioxide out of the atmosphere is a part of the worldwide solution to climate change. This baking soda solution and the fact that it takes only two years to mineralize carbon dioxide underground, each point to progress in lessening climate change. This gives us reason for optimism when we think about our scientific community and the great problems confronting us.
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