WLRN News
University of Miami chemistry professor Carl Hoff stands with Oswaldo Guio, one of his graduate students, in front of a Retsch MM500 machine.
As we head into the South Florida rainy season and the first year that Miami-Dade County has banned fertilizer to help improve Biscayne Bay, University of Miami chemists are looking at another way to clean up fertilizer by changing how we make it.
UM chemistry professors Carl Hoff and Burjor Captain worked with two graduate students to discover a way to improve the production of fertilizer.
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Chemists close in on greener method for making fertilizer
After adding a mechanical mixer and salts to their experiments, University of Miami researchers find a new way to convert a polluting gas into a key component of fertilizer.
Known as laughing gas, nitrous oxide is no laughing matter. The potent greenhouse gas emitted during the production of fertilizer is 300 times more harmful than carbon dioxide, forcing industrial factories all over the world to spend a lot of money and energy to dispose of the waste byproduct.
But in a breakthrough that one day might enable farmers to produce their own fertilizer from recycled waste, University of Miami chemists Carl Hoff and Burjor Captain have shown for the first time that it’s possible to convert nitrous oxide into potassium nitrate a key component of the fertilizer needed to feed half the world’s population.