This study was conducted to determine the absorption properties of silicone oil, liquid paraffin, and silicone rubber as absorbents for hydrophobic volatile organic compounds (VOCs) mainly emitted from the printing and publishing industry through VOCs absorption efficiency and partition coefficient. Also, changes in absorbability were tested through blending of absorbents and load of target VOCs mixtures. The results obtained can be used as fundamental data to choose an appropriate absorbent. All of the three absorbents showed an excellent absorption efficiency of above 98% for each 5 wt% load of the target VOCs including toluene, xylene, methyl ethyl ketone (MEK), isopropyl alcohol (IPA), 1,2,4-trimethylbenzene (124-TMB), and n-Nonane. In terms of toluene load, all absorbents showed good absorption efficiency of above 95% to a high load of 15 wt%. The air-absorbent partition coefficient of each target compound (P value) exhibited the highest value of 9.8 × 10−5 for 124-TMB in silicone rubber and the lowest value of 1.6 × 10−2 for IPA in liquid paraffin. These results indicate that the target VOCs had high affinity for the three absorbents. Absorption efficiency for the target VOCs at various absorbent blending ratios using three kinds of absorbents was improved to 99.9% regardless of the absorbent type or blending ratio. This result suggests that the shortcomings of single absorbents can be overcome through absorbent blending, enabling cost reduction and applicability to a dry-type treatment process. In treatment for mixture of the target VOCs to mimic an actual VOCs treatment, the absorption performances of silicone oil showed an absorption efficiency of 99% for 16 wt% of total VOCs load. These results indicated that silicone oil could be considered as a good absorbent.

Abstract
 1. 서 론
 2. 실험 방법
  2.1 대상 VOCs와 흡수제
  2.2 단일 VOCs 흡수능 평가방법
  2.3 VOCs 혼합물 흡수능 평가
  2.4 물질별 분배계수 측정
  2.5 흡수제 블랜딩에 따른 흡수능 변화
  2.6 분석 방법
 3. 실험 결과 및 고찰
  3.1 흡수제별 순수 toluene 흡수능
  3.2 흡수제별 toluene, TXYL, MEK, IPA, 124-TMB및 n-Nonane 흡수능
  3.3 인쇄출판업 배출 주요 VOCs 물질별 분배계수 비교
  3.4 흡수제 블랜딩에 따른 대상 VOCs 흡수능 변화
  3.5 대상 VOCs 혼합주입에 따른 흡수능 변화
 4. 결 론
 References

• 윤정희(이화여자대학교 환경공학과) | Jeonghee Yun (Department of Environmental Science and Engineering, Ewha Womans University)
• 서윤주(이화여자대학교 환경공학과) | Yoonjoo Seo (Department of Environmental Science and Engineering, Ewha Womans University)
• 장시내(이화여자대학교 환경공학과) | Shi-nae Jang (Department of Environmental Science and Engineering, Ewha Womans University)
• 조경숙(이화여자대학교 환경공학과) | Kyung-Suk Cho (Department of Environmental Science and Engineering, Ewha Womans University) Corresponding author