Potentially harmful chemicals can contaminate untreated water used in recycling plants to clean plastics before they're processed into new products, according to a new study by an Iowa State University research group. Researchers from Iowa State's Polymer and Food Protection Consortium tested common industrial plastic-washing practices and found that some methods left the wash water with high levels of two types of phthalates—a class of widely used additives linked to cancer risks and hormone disruptions related to reproduction and development, especially in children.
