DIC process for treatment of organic materials - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Conference Poster Year : 2006

DIC process for treatment of organic materials

Magdalena Kristiawan
Vaclav Sobolik
  • Function : Correspondent author
Mazen Al Haddad
  • Function : Contributor
Karim Allaf


A new process for material texturing, instantaneous controlled pressure drop (DIC), consists in heating wet materials in an autoclave, followed by a fast expansion (ΔP/Δt > 2.105 Pa/s) into a pressure lower than the atmospheric one (5 kPa). The vapour, which evolves due to the rapid pressure drop, mechanically strains the material. This stress creates porous structures, breaks the cells and destroys micro-organisms. The temperature of the material before the expansion is usually higher than 100°C and the pressure in the autoclave corresponds to the saturated steam pressure. Manifold applications of this process are presented on the example of the extraction of essential oil from dried ylang-ylang flowers. The essential oil is separated from the condensate. The treated flowers are also analysed. The results are compared with the classical steam distillation.
Fichier principal
Vignette du fichier
C5_IWPI 2006 abstract_1.pdf (77.49 Ko) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-02754479 , version 1 (03-06-2020)


  • HAL Id : hal-02754479 , version 1
  • PRODINRA : 358645


Magdalena Kristiawan, Vaclav Sobolik, Mazen Al Haddad, Karim Allaf. DIC process for treatment of organic materials. International Workshop on Process Intensification in Fluid and Particle Engineering, Oct 2006, Kobe, Japan. Chemical Engineering of Japan, Journal of Chemical Engineering of Japan, 40, pp.1021-1029, 2006, Isolation of Indonesian Cananga Oil by Instantaneous Controlled Pressure Drop: Influence of Processing Parameters on Compound Yields. ⟨hal-02754479⟩
7 View
1 Download


Gmail Facebook Twitter LinkedIn More