Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Adsorption Behavior and Kinetic Characteristic of Cibacron Brilliant Red 3B-A by Granular Activated Carbon

입상활성탄에 의한 Cibacron Brilliant Red 3B-A의 흡착거동 및 동력학적 특성

  • Lee, Jong Jib (Division of chemical Engineering, Kongju National University)
  • 이종집 (공주대학교 화학공학부)
  • Received : 2014.01.29
  • Accepted : 2014.03.18
  • Published : 2014.08.01
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Abstract

In this paper, the adsorption behavior and kinetic characteristics of cibacron brilliant red 3B-A from aqueous solution using granular activated carbon were investigated. The effect of various parameters such as adsorbent dose, pH, initial concentration, contact time and temperature on the adsorption system were studied. Base on the estimated Langmuir constant ($R_L$) and Freundlich constant (1/n), This process could be employed as effective treatment method. From the Temkin constant (B) and Dubinin-Radushkevich constant (E), This adsorption process is physical adsorption. From kinetic experiments, the adsorption process followed the pseudo second order model with good correlation. Base on the Gibbs free energy and enthalpy, the adsorption of cibacron brilliant red 3B-A onto granular activated carbon was physisorption and endothermic in nature.

본 연구는 입상활성탄을 사용하여 수용액으로부터 cibacron brilliant red 3B-A의 흡착 거동과 동력학적 특성에 대해 회분식 실험을 통해 알아보았다. 흡착변수로는 흡착제의 양, pH, 초기농도와 접촉시간과 온도를 사용하였다. 평가된 Langmuir 상수($R_L$)과 Freundlich 상수(1/n)로부터 활성탄에 의한 cibacron brilliant red 3B-A의 흡착조작이 적절한 처리방법이 될 수 있음을 알았고, Temkin 상수(B)와 Dubinin-Radushkevich 상수(E)로부터 물리흡착공정임을 알았다. 흡착공정에 대한 동력학적 해석을 통해 반응속도식의 적용결과는 유사이차반응속도식에 잘 맞는 것으로 나타났다. Gibbs 자유에너지와 엔탈피값으로부터 입상활성탄에 대한 cibacron brilliant red 3B-A의 흡착은 자발적인 물리흡착 및 흡열과정으로 진행되었다.

Keywords

References

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