A Breath Of Fresh Air To Treat Toxic Waste
Searching for cheaper, better ways to treat hazardous waste has become a preoccupation for industry. Today, contaminated groundwater at Superfund sites is cleansed by pumping it out of the ground, filtering it, and sending it to a wastewater plant for final treatment. That's an expensive process--and one that researchers at Stanford University now suggest could be done right in the ground, using air bubbles.
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