Thermophysical properties of fresh and lean thermally degraded N-methyldiethanolamine

Ahmad Shihadeh Abukashabeh, Emad Alhseinat, Sameer Al-Asheh, Fawzi Banat

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


This paper gives a deep insight to the thermophysical properties for thermally degraded methyldiethanolamine (MDEA) solutions. Density, viscosity and surface tension of samples of fresh MDEA solutions, real lean MDEA solutions, and thermally degraded MDEA solutions were measured at different temperatures. The measured values were validated through comparison with literature data. The obtained results were used to produce correlations for MDEA solution density and viscosity as a function of initial amine concentration, degradation time, and temperature. Increasing the degradation time and temperature increased the density, viscosity and surface tension. The predicted concentrations of MDEA of real lean amine samples were compared with the measured values through acid-base titration. The relative deviation between the results of titration and the predicted ones by the developed correlations ranged from 3.5% to 7.5%.

Original languageBritish English
Pages (from-to)317-323
Number of pages7
JournalJournal of Natural Gas Science and Engineering
StatePublished - Jul 2014


  • Density
  • MDEA
  • Surface tension
  • Temperature
  • Thermal degradation
  • Viscosity


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