Basic Study for Development of Denitrogenation Process by Ion Exchange(III) - A kinetic study in the batch reactor -

이온교환법에 의한 탈질소 공정개발의 기초연구(III) - 회분식 반응기에서의 반응속도론-

  • 채용곤 (대구보건대학 보건위생과) ;
  • 이동환 (부경대학교 화학공학부) ;
  • 김승일 (동의대학교 화학과) ;
  • 윤태경 (동의대학교 화학공학과) ;
  • 홍성수 (대구보건대학 보건위생과) ;
  • 이민규 (대구보건대학 보건위생과)
  • Published : 2000.04.01

Abstract

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 Lagmuir model were qmax =29.82 and b=0.202, and for Freundlich model were K=5.509 and n=1.772. Langmuir model showed betterfit than Frendlich model for the experimental results. Ion exchange reaction rate was also calculated and the the approximate first-order reaction, rate constant k1 was 0.16 L/mg.hr. Effective diffusion coefficient was obtained in the range from $9.67$\times$10^{-8} cm^2/sec$ for initial concentration change, and from $6.09$\times$10^{-7} to 3.98$\times$10^{-6} cm^2/sec$ for reaction temperature change. Activation energy during the diffusion was calculated as 26 kcal/mol.

Keywords

nitrate removal;anion exchange;Langmuir model;Feundlich model;effective diffusion coefficient

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