Application of pervaporation and osmotic membrane distillation to the regeneration of spent solutions from the osmotic food dehydration

• Authors: Wojciech Kujawski , Magdalena Gierszewska-Drużyńska , Justyna Warczok , Carme Güell
• Languages of publication: EN

Abstracts

EN

Results of pervaporation (PV) of sucrose and calcium chloride spent solutions were presented. Additionally, osmotic membrane distillation (OMD) of sucrose solutions was investigated. It was found that the regeneration of spent sucrose solution for the reuse is possible by using PV or OMD processes. However, OMD process produces another spent stream i.e. CaCl2. Pervaporation membranes showed fluxes in the range of 0.5 - 0.9 kg m-2 h-1 in contact with 40° Brix sucrose solution, whereas OMD water permeate fluxes were in the range of 4 - 5 kg m-2 h-1 for the same feed concentration.Two different hybrid processes were suggested: i) pretreatment followed by OMD reconcentration of spent sucrose solution and independently PV for CaCl2 regeneration; ii) membrane pretreatment (MP) followed by PV of sucrose solution. Based on the experimental results, the membrane areas for both systems were calculated and compared. MP-PV system seems to be a better solution for the spent mixtures management.

Keywords

EN

food processing; spent solution management; pervaporation; osmotic membrane distillation

• Publisher: De Gruyter Open
• Journal: Polish Journal of Chemical Technology
• Year: 2009
• Volume: 11
• Issue: 2
• Pages: 41-45

Dates

published

1 - 1 - 2009

online

19 - 6 - 2009

Contributors

author

Wojciech Kujawski

• Faculty of Chemistry, Nicolaus Copernicus University, ul. Gagarina 7, 87-100 Toruń, Poland

author

Magdalena Gierszewska-Drużyńska

• Faculty of Chemistry, Nicolaus Copernicus University, ul. Gagarina 7, 87-100 Toruń, Poland

author

Justyna Warczok

• Department of Chemical Engineering, Rovira i Virgili University, Avda. Paisos Catalans 26, 43007 Tarragona, Spain

author

Carme Güell

• Department of Chemical Engineering, Rovira i Virgili University, Avda. Paisos Catalans 26, 43007 Tarragona, Spain

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Identifiers

DOI

10.2478/v10026-009-0022-1