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이민규 ( Min Gyu Lee ),감상규 ( Sang Kyu Kam ),서근학 ( Keun Hak Suh ) 한국환경과학회 2012 한국환경과학회지 Vol.21 No.5
The adsorption behavior of Eosin Y on activated carbon (AC) in batch system was investigated. The adsorption isotherm could be well fitted by the Langmuir adsorption equation. The kinetics of adsorption followed the pseudo-second-order model. The temperature variation was used to evaluate the values of free energy (ΔGo), enthalpy (ΔHo) and entropy (ΔSo). The positive value of enthalpy change ΔH° for the process confirms the endothermic nature of the process and more favourable at higher temperature, the positive entropy of adsorption ΔS° reflects the affinity of the AC material toward Eosin Y and the negative free energy values ΔG° indicate that the adsorption process is spontaneous. With the increase of the amount of AC, removal efficiency of Eosin Y was increased, but adsorption capacity was decreased. And adsorption capacity was increased with the decrease of particle size. With the increase of the amount of AC, removal efficiency of Eosin Y was increased, but adsorption capacity was decreased. And adsorption capacity was increased with the decrease of particle size.
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박인수,서근학 경남대학교 환경문제연구소 1982 환경연구 Vol.4 No.-
A dynamic model was developed by applying Kubin-Kucera model in case of the porous solid with bimodal pore structure-gas system to the porous polymer resin with unimodal pore structure-gas system. With the model pore diffusivity and polymer gel diffusivity in fixed bed of porous polymer resin can be estimated simultaneously. Analysing the transient response of Amberlyst 15-N₂system by means of moment analysis, we obtained the D_(i)/r_(o)² value of 10^(-2) order of magnitude. And temperature dependence of the gel diffusivity was represented by Arrhenius' equation.
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