Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Thermodynamic study of some basic dyes adsorption from aqueous solutions on activated carbon and new correlations

Gopinathan, R., Bhowal, A.[Avijit], Garlapati, C.[Chandrasekhar]
J. Chem. Thermodyn. 2017, 107, 182-188
ABSTRACT
The adsorption behaviour of safranine O and malachite green oxalate dyes on activated carbon as a function of temperature for a fixed initial concentration was investigated at T = (303, 313 and 323) K and p = 0.1 MPa through adsorption isotherms and their thermodynamic parameters DGo, DHo and DSo. The isotherms were correlated with a new model based on the principle of phase equilibrium. The new model equation comprising of 4 adjustable parameters correlates the isotherms as a function of temperature, sorbate melting temperature. The overall deviation between the experimental and the correlated results was less than 6.85% in averaged absolute relative deviation (AARD).
Compounds
# Formula Name
1 C20H19ClN4 Safranine O
2 C52H54N4O12 Malachite green oxalate
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • Normal melting temperature, K ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • VISOBS
  • 1
  • POMD
  • 2
  • Normal melting temperature, K ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • VISOBS
  • 1