![]() Trang said a reputable study would account for what substances went in and what was recovered. "The method we developed is not ready for prime time in any sense." "All the other ones are pilot-scale or lab-scale investigations," Trang said. Trang said the only method used at the municipal level is incineration, though if the temperature is not hot enough, that can result in formation of other fluorinated compounds or just spread the PFAS into the air. "This is really where the frontier is," said Brittany Trang, a science writer who discovered a new method for destroying PFAS using solvents at relatively low temperatures as part of her Ph.D. To date, most PFAS remediation involves the use of filters to trap the chemicals. "You kind of need to see the data to see if that's really happening," Remucal said. Remucal wants to see controlled lab studies before the technology is tested in the field. Remucal said treating groundwater in place is typically more effective and requires far less energy than pumping it out and through filters, which then must be buried in special landfills.īut Remucal said there's little scientific evidence that biodegradation works on PFAS, whose strong molecular bonds make them difficult to break down and which tend to transform into other harmful substances. The idea is to trap PFAS so the microbes can break them down. The process, according to materials on Orin's website, entails injecting a mix of chemicals and bacteria into the soil along with electrodes that generate oxygen. Dane County Regional Airport spokesperson Michael Riechers said data would be released after it is presented to the state Department of Natural Resources, but did not say when that would happen.īut airport director Kimberly Jones said the pilot will be expanded to other parts of the airport, including one of two former training areas, known as "burn pits," that the DNR identified in 2018 as potential contaminated sites.ĭNR officials did not respond to questions about the results or whether the county has been authorized to expand the project.Īccording to the county, the test cleanup was done by Orin Technologies, of Verona, and a Canadian company known as Fixed Earth Innovations, which have formed a new joint venture called Onur Solutions. County officials did not provide data to support the claim or say whether the treated water meets state or federal guidelines.
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