4.4 Article

Numerical and Experimental Biomass Separation from Fermentation Process by Minihydrocyclones

Journal

CHEMICAL ENGINEERING & TECHNOLOGY
Volume 44, Issue 1, Pages 23-30

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/ceat.202000130

Keywords

Biomass particle separation; Computational fluid dynamics; Minihydrocyclone; Particle separation; Yeast

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Biomass particle separation in the pharmaceutical industry is challenging due to the small size and light weight of the particles. This study introduced mini-hydrocyclones as a better solution for continuous processes, achieving a higher concentration of biomass suspension in the product compared to conventional batch separation techniques.
Biomass particle separation is challenging in the pharmaceutical industry because of the smallness and lightness of such particles. Centrifugation is applied conventionally for batch separation. However, imposing multiple wash steps in order to eliminate culture residues and the high risk of extrinsic contamination hamper batch techniques. In this research, minihydrocyclones were introduced to provide a better solution for the mentioned limitations in continuous processes. Numerical separation of methylotrophic yeast from fermentation broth was carried out in three hydrocyclones with different lengths, and the most efficient one was examined experimentally. Three various feed flow rates and seven feed concentrations were evaluated. The concentration of biomass suspension in the product was raised to 20 %.

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