FAMU-FSU College of Engineering’s Gang Chen found that microwaving sewage waste, or biosolids, can remove the toxic heavy metals contaminating them so they can be used as fertilizers for crops. Microwaving the biosolids was an efficient and environmentally friendly method of decontamination.
“This is a solution that should be beneficial for many people. For instance, managers of wastewater treatment plants could potentially earn revenue by selling the biosolids instead of paying disposal fees for [them] to be dumped [in] landfills,” says Chen. “Farmers would also benefit from cheap organic fertilizers that could replace the chemical synthetic ones...”
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