Journal of Thermal Analysis and Calorimetry

, Volume 104, Issue 2, pp 555–559 | Cite as

Determination of partial immersion enthalpy in the interaction of water and activated carbon

  • Y. S. Murillo
  • L. Giraldo
  • J. C. Moreno-Piraján
Article

Abstract

A way to calculate the enthalpic contributions of each component of the mixture of activated carbon and water to the immersion enthalpy using the concepts of the solution enthalpies is presented. By determining the immersion enthalpies of a microporous activated carbon in water, with values that are between –18.97 and −27.21 Jg−1, from these and the mass ratio of activated carbon and water, differential enthalpies for the activated carbon, Δ\(H_{{\rm DIF}_{\rm ac}}\) and water, Δ\(H_{{\rm DIF}_{\rm w}}\) are calculated, and values between –15.95 and –26.81 Jg−1 and between –19.14 and –42.45 Jg−1, respectively are obtained. For low ratios of the mixture, the components’ contributions to the immersion enthalpy of activated carbon and water differ by 3.20 Jg−1.

Keywords

Enthalpy of immersion Activated carbon Water Enthalpy differential relative partial enthalpies 

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2010

Authors and Affiliations

  • Y. S. Murillo
    • 1
  • L. Giraldo
    • 1
  • J. C. Moreno-Piraján
    • 2
  1. 1.Departamento de Química, Facultad de CienciasUniversidad Nacional de ColombiaBogotáColombia
  2. 2.Departamento de Química, Facultad de CienciasUniversidad de los Andes, Grupo de Investigación en Sólidos Porosos y CalorimetríaBogotáColombia

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