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활성탄에 의한 헤테로고리화합물의 흡착에 미치는 관능기의 영향
Effect of Functional Groups of Hetero Cyclic Compound on Adsorption with Activated Carbon
HWAHAK KONGHAK, December 1995, 33(6), 669-674(6), NONE
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Abstract
활성탄에 의한 수용액중의 헤테로고리화합물의 흡착은 Freundlich형 등온식으로 설명할 수 있으며, Freundlich 상수의 곱[k n]은 끓는점(Tb)에 대하여 직선적으로 증가하였다. 포화흡착량(qs)은 하메트상수(σ), 유발상수(σ*) 및 극성상수(F)에 대하여 직선적으로 감소하였으며, 흡착속도는 표면확산이 지배적이었다. 표면확산계수(Ds)와 평형흡착량(qs)과의 관계는 Ds=Dso.exp[a.qe]로 표시할 수 있었으며, 관능기 종류 및 위치에 따라 속도인자 Dso와 a를 각각 구하여 Table 5에 제시하였다.
The isotherm of heterocyclic compound in aqueous solution onto activated carbon was correlated with Freundlich type equation, and Freundlich product [k n] appeared linear relationship with boiling point(Tb). Saturated adsorbed amount(qs) decreased with hammett constant(σ), inductive constant(σ*) and polar constant(F). Surface diffusion was considered to be dominant. Relationship between surface diffusivity(Ds) and equilibrium adsorbed amount(qe) was Ds=Ds0 exp[a qe]. Kinetic parameter Ds0 and a was shown Table 5 for kind and position of functional groups.
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