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Chemical Engineering Professor 
Transfer, Interface Mixing group
+33 (0)561559686

INSA de Toulouse
135 avenue de Rangueil
31077 Toulouse cedex 4 - FRANCE



2001 - Chemical Engineering Professor
Biosystems and Process Engineering Laboratory (LISBP INSA Toulouse - France President of the Occitanie Wastes Observatory (ORDIMIP- ORDECO) (2009- )

Deputy-Director of LISBP (2009-2015)

Deputy-Director of Process Engineering and Environment Laboratory (LIPE 2003- 2007)

Manager of the LIPE group Physical and Physico-Chemical Hydrodynamics of Multiphase Reactors (2003-2009)

Member of the board of Directors of FERMAT research federation (2005-2009)

Responsible for a collaborative joint research group Life and Process Sciences and Technologies for Environment (2003-2007 PPF LBB-LIPE)

Responsible INSA for the international n+i program for foreign students (2006- 2010)


Before 0ctobre 2001
Full time researcher CNRS (National Center for Scientific Research)
Chemical Engineering Laboratory
ENSIACET – Institut National Polytechnique – Toulouse – France
Co-responsible for the research group two-phase contactors (1992 – 2001)
Assistant director of the joint research group FERMaT (Fédération pour l’Etude des Réacteurs et la Maîtrise Avancée des Transferts)




Chemical engineering – multiphase reactors – CFD – local experimental techniques (LDA, PDA, LIF, PIV) – population balances – microphysics of dispersed media - Flotation, nanoparticles separation, microalgae harvesting


55 papers in international journals – Co-advising of 30 PhD Member of the International Scientific board for Flotation of the International Water Association since 2007

Chairman of the Organizing Committee of the 7the IWA Flotation Conference on Flotation for water and wastewater systems, Toulouse, France, 2016 


Physical chemistry S

urfaces, interfaces and colloids

Two-phase flow modelling

Solvent extraction




  1. M. Zhang, J.-L. Trompette, and P. Guiraud, “Role of Humic Acid in Enhancing Dissolved Air Flotation for the Removal of TiO2 Nanoparticles,” Ind. Eng. Chem. Res., Jan. 2017.
  2. A. H. Shimako et al., “Environmental assessment of bioenergy production from microalgae based systems,” Journal of Cleaner Production, vol. 139, pp. 51–60, décembre 2016.
  3. Y. Liu, M. Tourbin, S. Lachaize, and P. Guiraud, “Nanoparticles in wastewaters: Hazards, fate and remediation,” Powder Technology, vol. 255, no. 0, pp. 149–156, Mar. 2014.
  4. R. Hreiz, B. Sialve, J. Morchain, R. Escudié, J.-P. Steyer, and P. Guiraud, “Experimental and numerical investigation of hydrodynamics in raceway reactors used for algaculture,” Chemical Engineering Journal, vol. 250, no. 0, pp. 230–239, 2014.
  5. G. Angelov, P. Guiraud, and L. Boyadzhiev, “Dimensional changes of vegetal particles in contact with a solvent,” Comptes Rendus De L Academie Bulgare Des Sciences, vol. 67, no. 5, pp. 665–670, 2014.
  6. D. Colombet, A. Cockx, P. Guiraud, and D. Legendre, “Experiments and modelling of a draft tube airlift reactor operated at high gas throughputs,” Chemical Engineering Science, vol. 104, no. 0, pp. 32–43, Dec . 2013.
  7. D. Colombet, D. Legendre, A. Cockx, and P. Guiraud, “Mass or heat transfer inside a spherical gas bubble at low to moderate Reynolds number,” International Journal of Heat and Mass Transfer, vol. 67, no. 0, pp. 1096–1105, Dec . 2013.
  8. A. Besson and P. Guiraud, “High-pH-induced flocculation–flotation of the hypersaline microalga Dunaliella salina,” Bioresource Technology, vol. 147, no. 0, pp. 464–470, Nov. 2013.
  9. M. Zhang and P. Guiraud, “Elimination of TiO2 nanoparticles with the assist of humic acid: Influence of agglomeration in the dissolved air flotation process,” Journal of Hazardous Materials, vol. 260, no. 0, pp. 122–130, Sep. 2013.
  10. Y. Liu, M. Tourbin, S. Lachaize, and P. Guiraud, “Silica nanoparticles separation from water: Aggregation by cetyltrimethylammonium bromide (CTAB),” Chemosphere, vol. 92, no. 6, pp. 681–687, Jul. 2013.
  11. Y. Liu, M. Tourbin, S. Lachaize, and P. Guiraud, “Silica Nanoparticle Separation from Water by Aggregation with AlCl3,” Industrial & Engineering Chemistry Research, vol. 51, no. 4, pp. 1853–1863, Feb. 2012.
  12. Z. Huang, D. Legendre, and P. Guiraud, “Effect of interface contamination on particle–bubble collision,” Chemical Engineering Science, vol. 68, no. 1, pp. 1–18, Jan. 2012.
  13. S. Khirani, P. Kunwapanitchakul, F. Augier, C. Guigui, P. Guiraud, and G. Hébrard, “Microbubble Generation through Porous Membrane under Aqueous or Organic Liquid Shear Flow,” Ind. Eng. Chem. Res., Sep. 2011.
  14. D. Colombet et al., “Experimental study of mass transfer in a dense bubble swarm,” Chemical Engineering Science, vol. 66, no. 14, pp. 3432–3440, Jul. 2011.
  15. Z. Huang, D. Legendre, and P. Guiraud, “A new experimental method for determining particle capture efficiency in flotation,” Chemical Engineering Science, vol. 66, no. 5, pp. 982–997, Mar. 2011.