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

• Autorzy: Kujawski W. , Gierszewska-Drużyńska M. , Warczok J. , Güell C.
• Języki publikacji: EN

Abstrakty

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.

Słowa kluczowe

EN

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

PL

przetwórstwo spożywcze; roztwory odpadowe; zarządzanie odpadami; perwaporacja; destylacja membranowa; destylacja osmotyczna

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2009
• Tom: Vol. 11, nr 2
• Strony: 41--45
• Opis fizyczny: Bibliogr. 22 poz., rys.

Twórcy

autor

Kujawski W.

autor

Gierszewska-Drużyńska M.

autor

Warczok J.

autor

Güell C.

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

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