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이온교환법에 의한 탈질소 공정개발의 기초연구 (Ⅲ) : 희분식 반응기에서의 반응속도론 A kinetic study in the batch reactor
채용곤,이동환,김승일,윤태경,홍성수,이민규 한국환경과학회 2000 한국환경과학회지 Vol.9 No.2
A kinetic study for anion exchange was performed for commercially available Cl^- type anion exchange resin in use to remove nitrate in water. The obtained results from the batch reactor were applied to the Langmuir and Freundlich models. The constants for Langmuir model were q_max=29.82 and b=0.202, and for Freundlich model were K=5.509 and n=1.772. Langmuir model showed better fit than Frendlich model for the experimental results. Ion exchange reaction rate was also calculated and the approximate first-order reaction, rate constant k_1 was 0.16 L/㎎·hr. Effective diffusion coefficient was obtained in the range from 9.67×10 exp (-8) to 1.67×10 exp (-6) ㎠/sec for initial concentration change, and from 6.09×10 exp (-7) to 3.98×10 exp (-6) ㎠/sec for reaction temperature change. Activation energy during the diffusion was calculated as 36 ㎉/㏖.