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입상활성탄에 의한 물 중의 페놀의 제거: 매개변수 추정

Removal of Phenol in Water by Granular Activated Carbon: Parameter Estimation

윤영삼 권성헌 변윤섭 김인실 박판욱 정용옥

Yun YS Kweon SH Byun YS Kim IS Park PW Jeong(Park) YO

HWAHAK KONGHAK, October 1997, 35(5), 705-711(7), NONE

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Abstract

수용액에서 입상활성탄에 의한 페놀의 제거를 통해 흡착제의 특성과 흡착관의 성능을 조사하고자 흡착평형등온, 흡착속도와 충전층 흡착관의 실험을 수행하였다. 흡착거동에 대한 예측모델을 구성하여 finite element method(FEM)을 이용, 수치해를 구하였다. 흡착제의 흡착거동은 예측모델로 표면확산모델과 세공확산모델을 적용하여 고찰하였고, 두 모델 모두 흡착현상을 예측하는데 적용될 수 있었다. 그러나, 세공확산모델이 표면확산모델보다 실험치와의 부합도가 다소 좋았다. 그러므로, 충전층 흡착관 설계를 목적으로 운전 조건에 따른 충전층 흡착관의 거동을 예측하기 위하여 세공확산모델을 선정하였다.

Experimental studies on adsorption equilibrium adsorption rate and fixed-bed adsorption were performed to investigate the adsorption behavior of an activated carbon and the capacity of fixed-bed adsorber for the removal of phenol from aqueous solution. The composed prediction model equations for adsorption behavior were solved by finite element method(FEM). Adsorption behavior of adsorbent was analyzed by the surface and pore diffusion models. Both of the models can be applied to predict the performance of the adsorbent. However, the pore diffusion model was slightly better than the surface diffusion model in representing the experimental data. Therefore, the pore diffusion model was applied to predict the adsorber performance by changing operational variables associated with adsorption process of phenol on the granular activated carbon for the design purpose for fixed-bed adsorber.

Keywords

Adsorption Finite Element Method Fixed-Bed Adsorber Design Pre Diffusion Model Surface Diffusion Model

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