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자료유형
학술저널
저자정보
윤정희 (이화여자대학교) 조경숙 (이화여자대학교)
저널정보
한국냄새환경학회 실내환경 및 냄새 학회지 실내환경 및 냄새 학회지 제17권 제2호
발행연도
2018.1
수록면
95 - 121 (27page)

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This paper is a review on the treatment of volatile organic compounds using absorbents. Volatile organiccompounds (VOCs) are carbon-based compounds with a boiling point ranging from 50oC to 250oC. VOCs havebeen considered as contributors of photochemical smog and global warming as well as hazards to human health. VOCs can be removed by a variety of methods, including those that are destructive (incineration, catalyticoxidation, and biodegradation) and non-destructive (adsorption, absorption, and condensation). The removalperformance of VOCs in the gas phase is influenced by gas-liquid mass transfer and/or the microbial activitydepending on VOC properties such as solubility, diffusivity, bioavailability, and toxicity. Since the usual processesfor VOCs removal involve water as a VOC absorbent, it is necessary to improve the removal efficiency ofhydrophobic VOCs. In addition, VOC removal processes do not appear to show consistently satisfactoryperformance due to transient high-strength VOC loading in practical fields. To increase the gas-liquid mass transferof hydrophobic VOCs and to prevent the functional deterioration due to transient high loading, the use of nonaqueousphase VOC absorbents is a promising strategy. This review offers a critical overview of the types,properties, and the applications of the VOC absorbents, including liquid organic solvents, ionic liquids, and solidpolymers. This paper also details the advantages by employing the VOC absorbents for the removal of hydrophobicVOCs in the integrated process, absorption and biodegradation coupling process. The challenges of and futureperspectives on the development of efficient VOC removal processes using VOC absorbents are briefly discussed.

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