Assessing blending of non-newtonian fluids in static mixers by planar laser- induced fluorescence and electrical resistance tomography

Research output: Contribution to journalArticlepeer-review


  • Giuseppe Forte
  • E. Hugh Stitt
  • Elisabetta Brunazzi

Colleges, School and Institutes

External organisations

  • Johnson Matthey Catalysts
  • Department of Civil and Industrial Engineering, University of Pisa


Planar laser-induced fluorescence (PLIF) and electrical resistance tomography (ERT) were applied simultaneously to monitor the mixing performance of a KM static mixer for the blending of non-Newtonian fluids of dissimilar rheologies in the laminar regime. The areal distribution method was used to obtain quantitative information from the ERT tomograms and the PLIF images. Comparison of the ERT and PLIF results demonstrates the ability of ERT to detect the mixing performance in cases of poor mixing within the resolution of the measurement, though the accuracy decreases as the condition of perfect mixing is approached. Thus, ERT has the potential to detect poor mixing within the confines of its resolution limit and the required conductivity contrast, providing potential rapid at-line measurement for industrial practitioners.


Original languageEnglish
Pages (from-to)1602-1610
Number of pages9
JournalChemical Engineering & Technology
Issue number8
Early online date15 Apr 2019
Publication statusPublished - Aug 2019


  • Electrical resistance tomography, Mixing, Non-Newtonian fluid, Planar laser-induced fluorescence, Static mixer