||Treatability of Phthalate Ester Compounds from Plastics Molding and Forming Wastewaters.
Gardner, D. ;
Osantowski, R. ;
Dostal, K. A. ;
Dempsey, C. R. ;
||Radian Corp., Milwaukee, WI.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.
Waste water ;
Chemical removal(Water treatment) ;
Activated carbon treatment ;
Organic compounds ;
Waste treatment ;
Industrial wastes ;
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The objective of the project was to evaluate methods of removing phthalates from a plastics molding and forming contact cooling and heating water. Two technologies were evaluated: (1) ferric chloride assisted clarification; and, (2) activated carbon adsorption. The actual wastewater was spiked with about 2 mg/l of each of the following phthalates: bis (2-ethylhexyl), di-n-butyl and dimethyl. The spiked wastewater was then used to conduct the bench-top jar tests. The ferric chloride assisted clarification reduced the bis (2-ethylhexyl) phthalate concentration by about 90 percent but did not remove either of the other two phthalates. A series of powdered activated carbon jar tests were conducted on the spiked wastewater and adsorption isotherms were generated for each of the three phthalates.