In this study, the adsorption/desorption performance of toluene was evaluated using zeolite adsorbent to replace activated carbon with one-off and ignition characteristics. For the proper operation of the VOCs adsorption/desorption and condensate recovery steps, the operating range by various adsorption/desorption temperatures was selected. The adsorbent is a bead-type zeolite, which was put into an adsorption tower of 10 LPM scale. As a result, it was demonstrated that 0.079 mg/g was adsorbed at a low temperature (20°C) during adsorption. In the case of desorption, it was found that VOCs adsorbed on the adsorbent were completely recovered after the desorption operation at 220°C for about 160 minutes. However, in the heating rate step for desorption, it was not possible to maintain an appropriate heating rate by filling the tower with zeolite. This was complemented by applying a copper plate with high thermal conductivity, and it was shown that the time was shortened by about 10 minutes or more. When VOCs are emitted at high concentrations during the desorption process, they can be reused as energy resources through low-temperature maintenance, and a condensation method was attempted. The efficiency of condensing chiller (cooler) with temperature control and liquid nitrogen condensing was compared. It was found that the chiller condensing efficiency increased as the temperature decreased. In the case of liquid nitrogen condensation, the liquid nitrogen temperature was maintained at -196°C, showing a stable efficiency of 90%.

Abstract
1. 서 론
2. 재료 및 방법
    2.1 VOCs 흡·탈착 실험 장치 및 방법
    2.2 VOCs 응축 실험 장치 및 방법
3. 결과 및 고찰
    3.1 VOCs 종류에 따른 흡착 성능 평가
    3.2 흡착 특성에 미치는 온도 영향
    3.3 탈착 특성에 미치는 온도 및 유량의 영향
    3.4 흡착제 유무에 따른 승온 속도 영향
    3.5 VOCs 저온 응축 기술 비교
4. 결 론
감사의 글
References

• 김준오(경기대학교 일반대학원 환경에너지공학과,) | Jun Oh Kim (Department of Environmental Energy Engineering, Graduate School of Kyonggi University)
• 장영희(경기대학교 일반대학원 환경에너지공학과,) | Younghee Jang (Department of Environmental Energy Engineering, Graduate School of Kyonggi University)
• 노영일(경기대학교 일반대학원 환경에너지공학과,) | Young Il Noh (Department of Environmental Energy Engineering, Graduate School of Kyonggi University)
• 정현수(경기대학교 일반대학원 환경에너지공학과,) | Hyeonsu Jeong (Department of Environmental Energy Engineering, Graduate School of Kyonggi University)
• 이상문(경기대학교 환경에너지공학과) | Sang Moon Lee (Department of Environmental Energy Engineering, Kyonggi University)
• 김성수(경기대학교 환경에너지공학과) | Sung Su Kim (Department of Environmental Energy Engineering, Kyonggi University) Corresponding Author