인쇄업에서 배출되는 반응성 VOCs 종류와 흡착 제거 방법의 적용 (Volatile organic compounds emitted from printing processes and their removal by adsorption)

서지정보

· 발행기관 : 한국냄새환경학회
· 수록지 정보 : 실내환경 및 냄새 학회지 / 17권 / 4호 / 396 ~ 403페이지
· 저자명 : 안해영, 송지현, 이윤경

초록

In this study, volatile organic compounds (VOCs) emitted from printing industries were analyzed, and an inorganicadsorbent, γ-alumina, was selected for the effective control of the VOC emissions. Printing processes commonlyrequire inks, thinners, and cleaners, and they were mixed organic solvents containing aromatic compounds, ketones,and alcohols. Therefore, toluene, methyl ethyl ketone (MEK), and isopropyl alcohol (IPA) were selected as modelcompounds for this study. The adsorptive properties using γ-alumina were determined for the model compounds.
Both batch isotherm and continuous flow column tests demonstrated that the adsorption capacity of MEK andIPA was 3~4 times higher than that of toluene. The column test performed at an inlet toluene concentration of100 ppm showed that an 80% breakthrough for toluene was observed after 3 hours, but both MEK and IPA werecontinuously adsorbed during the same time period. A numerical model simulated that the γ-alumina could removetoluene at a loading rate of 0.4 mg/min only for a 4-hour period, which might be too short of a duration for realapplications. Consequently, lifetime enhancement for γ-alumina must be implemented, and ozone oxidation andregeneration would be feasible options.

영어초록

In this study, volatile organic compounds (VOCs) emitted from printing industries were analyzed, and an inorganicadsorbent, γ-alumina, was selected for the effective control of the VOC emissions. Printing processes commonlyrequire inks, thinners, and cleaners, and they were mixed organic solvents containing aromatic compounds, ketones,and alcohols. Therefore, toluene, methyl ethyl ketone (MEK), and isopropyl alcohol (IPA) were selected as modelcompounds for this study. The adsorptive properties using γ-alumina were determined for the model compounds.
Both batch isotherm and continuous flow column tests demonstrated that the adsorption capacity of MEK andIPA was 3~4 times higher than that of toluene. The column test performed at an inlet toluene concentration of100 ppm showed that an 80% breakthrough for toluene was observed after 3 hours, but both MEK and IPA werecontinuously adsorbed during the same time period. A numerical model simulated that the γ-alumina could removetoluene at a loading rate of 0.4 mg/min only for a 4-hour period, which might be too short of a duration for realapplications. Consequently, lifetime enhancement for γ-alumina must be implemented, and ozone oxidation andregeneration would be feasible options.

참고자료

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