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자료유형
학술저널
저자정보
저널정보
한국수처리학회 한국수처리학회지 한국수처리학회지 제23권 제2호
발행연도
2015.1
수록면
13 - 26 (14page)

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The adsorption of two dyes, namely Basic Yellow 2(BY2) and Acid Red 88(AR88) onto granular activated carbon was studied as various physicochemical parameters of initial dye concentration, temperature, initial pH, pre-treatment by HCl and NaOH and ionic strengh with KCl. This adsorption experiment was performed in batch system. The equilibrium isotherms for AR88 and BY2 were described by both of the Langmuir isotherm model and the Freundlich model. The results of initial dye concentration showed that the adsorption capacity of both dyes increased with the initial concentration increased and the adsorption process of two dyes were described well pseudo-second-order kinetics. The adsorption capacity of BY2 and AR88 increased with increased temperature. But there is not a distinct difference of the amount of dyes adsorbed (BY2(qe=16.10~16.55); AR88(qe=14.98-15.33)). The ΔG°, ΔH° and ΔS° were also evaluated for thermodynamic study. The removal efficiency was highest in a pH range of 6-10 for BY2 and of 2 for AR88. The effect of the activated carbon pre-treated with HCl and NaOH was 95-96% for BY2 and 89-93% for AR88. And optimum conditions for both dyes removal were found to be 0.01M KCl.

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