Purification of Waste Organic Solvent Containing Propylene Glycol Monomethyl Ether Acetate (PGMEA)

PGMEA를 포함하는 폐유기용제의 정제

  • Yoon, Kyoung-Jin (Department of Environmental Engineering, Chungbuk National University) ;
  • Lee, Woong-Mok (Department of Environmental Engineering, Chungbuk National University) ;
  • Kwon, Oh-Hoon (Department of Environmental Engineering, Chungbuk National University) ;
  • Kim, Jae-Yong (Department of Environmental Engineering, Chungbuk National University)
  • Received : 2010.06.29
  • Accepted : 2010.08.30
  • Published : 2010.12.10

Abstract

This study was performed to recycle Propylene Glycol Monomethyl Ether Acetate (PGMEA) from Liquid Crystal Display (LCD) industry emission as a waste organic solvent by using a multistage distillation column and tried to decide optimum reflux ratio. From the final experiment result, it was confirmed ; in case the sample A, the PGMEA purity is more than 98% and the moisture is less than 0.05%, on the other hand, in case the sample B, the PGMEA purity is more than 95% when the reflux ratio is 6 and the moisture is less than 0.01% (Refer to Table 1 for the contents of sample A and B). These values means fine level which can be adapted in the LCD manufacture, requiring more than 90% common purity of recycling level.

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