How Overlimiting Current Condition Influences Lactic Acid Recovery and Demineralization by Electrodialysis with Nanofiltration Membrane: Comparison with Conventional Electrodialysis
Acid whey is the main co-product resulting from the production of fresh cheeses and Greek-type yogurts. It generally goes through a spray-drying process prior to valorization, but it needs to be deacidified (lactic acid recovery) and demineralized beforehand to obtain a powder of quality with all th...
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doaj-af211ed8a54f44178e2dc46cc1354ea12020-11-25T03:07:28ZengMDPI AGMembranes2077-03752020-05-011011311310.3390/membranes10060113How Overlimiting Current Condition Influences Lactic Acid Recovery and Demineralization by Electrodialysis with Nanofiltration Membrane: Comparison with Conventional ElectrodialysisMarielle Beaulieu0Véronique Perreault1Sergey Mikhaylin2Laurent Bazinet3Institute of Nutrition and Functional Food (INAF) and Department of Food Sciences, Pavillon Paul-Comtois, Université Laval, Quebec, QC G1V 0A6, CanadaInstitute of Nutrition and Functional Food (INAF) and Department of Food Sciences, Pavillon Paul-Comtois, Université Laval, Quebec, QC G1V 0A6, CanadaInstitute of Nutrition and Functional Food (INAF) and Department of Food Sciences, Pavillon Paul-Comtois, Université Laval, Quebec, QC G1V 0A6, CanadaInstitute of Nutrition and Functional Food (INAF) and Department of Food Sciences, Pavillon Paul-Comtois, Université Laval, Quebec, QC G1V 0A6, CanadaAcid whey is the main co-product resulting from the production of fresh cheeses and Greek-type yogurts. It generally goes through a spray-drying process prior to valorization, but it needs to be deacidified (lactic acid recovery) and demineralized beforehand to obtain a powder of quality with all the preserved compounds of interest such as lactose and proteins. Electrodialysis (ED) is a process actually used for acid whey treatment, but scaling formation at the surface of the ion-exchange membrane is still a major problem. In this work, a combination of two new avenues of ED treatment has been studied. First, the integration of a nanofiltration (NF) membrane in an ED conventional stack was compared to a classical ED stack with an anion-exchange membrane in a standard current condition. Secondly, both configurations were tested in the overlimiting current condition to study the impact of electroconvective vortices on process efficiency. The combined effects of the NF membrane and overlimiting current condition led to a higher lactic acid recovery rate of acid whey (40%), while the conventional ED stack in the overlimiting current condition led to a higher demineralization (87% based on the total cation concentration). Those effects were related to the conductivity, pH, global resistance, and energy consumption of each treatment that are influenced by water splitting phenomenon, which was decreased in the overlimiting condition.https://www.mdpi.com/2077-0375/10/6/113acid wheylactic acid recoverydemineralizationelectrodialysisenergy consumptionnanofiltration membrane |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Marielle Beaulieu Véronique Perreault Sergey Mikhaylin Laurent Bazinet |
spellingShingle |
Marielle Beaulieu Véronique Perreault Sergey Mikhaylin Laurent Bazinet How Overlimiting Current Condition Influences Lactic Acid Recovery and Demineralization by Electrodialysis with Nanofiltration Membrane: Comparison with Conventional Electrodialysis Membranes acid whey lactic acid recovery demineralization electrodialysis energy consumption nanofiltration membrane |
author_facet |
Marielle Beaulieu Véronique Perreault Sergey Mikhaylin Laurent Bazinet |
author_sort |
Marielle Beaulieu |
title |
How Overlimiting Current Condition Influences Lactic Acid Recovery and Demineralization by Electrodialysis with Nanofiltration Membrane: Comparison with Conventional Electrodialysis |
title_short |
How Overlimiting Current Condition Influences Lactic Acid Recovery and Demineralization by Electrodialysis with Nanofiltration Membrane: Comparison with Conventional Electrodialysis |
title_full |
How Overlimiting Current Condition Influences Lactic Acid Recovery and Demineralization by Electrodialysis with Nanofiltration Membrane: Comparison with Conventional Electrodialysis |
title_fullStr |
How Overlimiting Current Condition Influences Lactic Acid Recovery and Demineralization by Electrodialysis with Nanofiltration Membrane: Comparison with Conventional Electrodialysis |
title_full_unstemmed |
How Overlimiting Current Condition Influences Lactic Acid Recovery and Demineralization by Electrodialysis with Nanofiltration Membrane: Comparison with Conventional Electrodialysis |
title_sort |
how overlimiting current condition influences lactic acid recovery and demineralization by electrodialysis with nanofiltration membrane: comparison with conventional electrodialysis |
publisher |
MDPI AG |
series |
Membranes |
issn |
2077-0375 |
publishDate |
2020-05-01 |
description |
Acid whey is the main co-product resulting from the production of fresh cheeses and Greek-type yogurts. It generally goes through a spray-drying process prior to valorization, but it needs to be deacidified (lactic acid recovery) and demineralized beforehand to obtain a powder of quality with all the preserved compounds of interest such as lactose and proteins. Electrodialysis (ED) is a process actually used for acid whey treatment, but scaling formation at the surface of the ion-exchange membrane is still a major problem. In this work, a combination of two new avenues of ED treatment has been studied. First, the integration of a nanofiltration (NF) membrane in an ED conventional stack was compared to a classical ED stack with an anion-exchange membrane in a standard current condition. Secondly, both configurations were tested in the overlimiting current condition to study the impact of electroconvective vortices on process efficiency. The combined effects of the NF membrane and overlimiting current condition led to a higher lactic acid recovery rate of acid whey (40%), while the conventional ED stack in the overlimiting current condition led to a higher demineralization (87% based on the total cation concentration). Those effects were related to the conductivity, pH, global resistance, and energy consumption of each treatment that are influenced by water splitting phenomenon, which was decreased in the overlimiting condition. |
topic |
acid whey lactic acid recovery demineralization electrodialysis energy consumption nanofiltration membrane |
url |
https://www.mdpi.com/2077-0375/10/6/113 |
work_keys_str_mv |
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