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printech, December, 2000
RE: powderizing ink?


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From:SSchuler (SSchuler@PIMN.ORG)
Date:Fri, 29 Dec 2000 10:45:27 -0600


Sherry. I don't think you've gotten the proper response to your waste ink question yet. Here in Minnesota, waste petroleum oil based litho ink is not considered to be a hazardous waste unless it is co-mingled with a hazardous waste solvent or contains heavy metals above the TCLP limits. Therefore, it can be disposed of in an industrial waste landfill if it is first "powderized" as you put it. This process involves adding layers of oil/floor dry compound every few inches of ink in a 55-gallon drum. So as waste ink is added to the drum, so is the oil/floor dry compound. There is no set formula for the ratio of oil/floor dry to ink. Common sense rules here. The main goal is to absorb/adsorb most of the oil in the ink into the oil/floor dry compound so that if, or should I say when, the drum leaks in the future, the oil will be bound up and will not leak out of the drum and consequently, will not seep into the groundwater. PIM recommends that printers not landfill their waste ink because of possible future superfund liabilities. There certainly are better, less risky alternatives for managing waste ink that are described in detail in PNEAC fact sheets and through the listserv archives. I hope this is the information you were looking for. Happy New Year! Scott Schuler Environmental Director Printing Industry of Minnesota, Inc. 2829 University Avenue SE, Suite 750 Minneapolis, MN 55414-3222 Main Number: (612) 379-3360 Direct Number: (612) 379-6006 Fax: (612) 379-6030 e-mail: sschuler@pimn.org website: www.pimn.org



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