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- In relation to this article, we declare that there is no conflict of interest.
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Received November 29, 2019
Accepted December 23, 2019
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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실로퓨트에 의한 아세나프텐 흡착에 관한 등온흡착식, 동역학 및 열역학적 특성
Isotherm, Kinetic and Thermodynamic Characteristics for Adsorption of Acenaphthene onto Sylopute
공주대학교 화학공학부, 31080 충남 천안시 서북구 천안대로 1223-24
Department of Chemical Engineering, Kongju National University, 1223-24, Cheonan-daero, Seobuk-gu, Cheonan-si, Chungcheongnam-do, 31080, Korea
Korean Chemical Engineering Research, February 2020, 58(1), 127-134(8), 10.9713/kcer.2020.58.1.127 Epub 4 February 2020
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Abstract
상용흡착제 실로퓨트에 의한 Taxus chinensis 유래 주요 타르 성분인 아세나프텐의 흡착 특성을 조사하였다. 초기 아세나프텐 농도, 흡착 온도 및 시간에 따른 흡착 데이터를 Langmuir, Freundlich, Temkin 및 Dubinin-Radushkevich 등온흡착식에 적용한 결과, Langmuir 등온흡착식이 가장 적합하였다. 동역학적 흡착 데이터는 유사 이차 속도식에 가장 잘 따름을 알 수 있었다. 열역학적 파라미터로부터 흡착 공정이 적합하며 비자발적 발열이었다. 등량흡착열은 흡착량에 의존하지 않아 실로퓨트의 표면에너지가 균일함을 알 수 있었다.
The adsorption characteristics of the major tar compound, acenaphthene, derived from Taxus chinensis by the commercial adsorbent Sylopute were investigated using different parameters such as initial acenaphthene concentration, adsorption temperature, and contact time. Out of Langmuir, Freundlich, Temkin and Dubinin-Radushkevich isotherm models, adsorption data were best described by Langmuir isotherm. The adsorption kinetics was evaluated by pseudo-firstorder, pseudo-second-order and intraparticle diffusion models. The pseudo-second-order model was found to explain the adsorption kinetics most effectively. Thermodynamic parameters revealed the feasibility, nonspontaneity and exothermic nature of adsorption. In addition, the isosteric heat of adsorption was independent of surface loading indicating the Sylopute used as an energetically homogeneous surface.
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