High Tech Money Laundering with Carbon Dioxide

Thousand Dollar BillCarbon dioxide (CO2) gets an awful lot of bad press these days. So I was pleased, earlier this week, to note it being touted as the environmentally-friendly solution to a big green problem.

It turns out that dealing with old paper money is a huge issue for the world’s central banks. The notes generally need to be destroyed and replaced since there has been no good way to clean them. Now scientists in Rhode Island have come up with a solution: use supercritical CO2 to clean the accumulated hand oils and dirt off of the old bills so they can be re-used.

Here’s the layman’s version of the story, from The Econmist: The Benefits of Money Laundering

Or, for you folks who prefer your science news unmediated by the press, here’s a reference to the research paper itself: http://pubs.acs.org/doi/abs/10.1021/ie403307y

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About Anne Gunn

A Wyoming native who grew up in Montana, Anne Gunn lived for 20 years in New England before returning to Wyoming in 1999. While in New England, she co-founded Tally Systems, a bootstrap-funded software company. At Tally she wore many hats, including software development, sales, technical support, quality assurance, and product management. In 1995 she promoted herself from Senior VP of Product Management to entry level programmer in order to have more flexibility about when and where she worked. She remained on the board of Tally until its sale to Novell in 2005. Here in Wyoming, she has worked as a freelance programmer and has a small software company, Sheridan Programmers Guild, that publishes apps, websites, and ebooks. But these days, most of her time and energy goes into teaching coding as a computer science instructor at Sheridan College / NWCCD.

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