Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Adsorption characteristic of Cu(II) and phosphate using non-linear and linear isotherm equation for chitosan bead

비선형과 선형 등온흡착식을 이용한 키토산비드의 구리와 인산염의 흡착특성

  • Kim, Taehoon (Department of Civil Engineering, Sangmyung University) ;
  • An, Byungryul (Department of Civil Engineering, Sangmyung University)
  • 김태훈 (상명대학교 건설시스템공학과) ;
  • 안병렬 (상명대학교 건설시스템공학과)
  • Received : 2020.05.26
  • Accepted : 2020.06.08
  • Published : 2020.06.15
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Abstract

2 (Langmuir, Freundlich, Elovich, Temkin, and Dubinin-Radushkevich) and 3 (Sips and Redlich-Peterson)-parameter isotherm models were applied to evaluated for the applicability of adsorption of Cu(II) and/or phosphate isotherm using chitosan bead. Non-linear and linear isotherm adsorption were also compared on each parameter with coefficient of determination (R2). Among 2-parameter isotherms, non-linear Langmuir and Freundlich isotherm showed relatively higher R2 and appropriate maximum uptake (qm) than other isotherm equation although linear Dubinin-Radushkevich obtained highest R2. 3-parameter isotherm model demonstrated more reasonable and accuracy results than 2-parmeter isotherm in both non-linear and linear due to the addition of one parameter. The linearization for all of isotherm equation did not increase the applicability of adsorption models when error experiment data was included.

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