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Recycling and reusing items is generally accepted as the “right” thing to do. But what if there were unintended, negative consequences to recycling? For example, old car tires are often ground down and reused for synthetic turf, with roughly 40,000 tires used per field.1 However, car tires contain the chemical 6PPD,5 which is converted by ozone to a quinone compound 6PPD-quinone (6PPD-Q) and enters river systems where it is toxic to coho salmon. In addition, some studies have detected per- and polyfluorinated alkyl substances (PFAS)— the” forever chemicals”—in artificial turf,1,4 which means it may be a source of PFAS found in nearby water supplies and potentially in drinking water.
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The secrets of recycling: PFAS and 6PPD
Recycling and reusing items is generally accepted as the “right” thing to do. But what if there were unintended, negative consequences to recycling? For example, old car tires are often ground down and reused for synthetic turf, with roughly 40,000 tires used per field.1 However, car tires contain the chemical 6PPD,5 which is converted by ozone to a quinone compound 6PPD-quinone (6PPD-Q) and enters river systems where it is toxic to coho salmon. In addition, some studies have detected per- and polyfluorinated alkyl substances (PFAS)— the” forever chemicals”—in artificial turf,1,4 which means it may be a source of PFAS found in nearby water supplies and potentially in drinking water.
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