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Title: Electrowashing of microalgae Arthrospira platensis filter cake
Authors: Aoude, Christa
Grimi, Nabil
Zakhem, Henri El 
Vorobiev, Eugene
Affiliations: Department of Chemical Engineering 
Keywords: Arthrospira platensis
Filter cake washing
Microalgae cake
Issue Date: 2023-03-14
Publisher: Taylor & Francis Online
Part of: Separation Science and Technology (Philadelphia)
Volume: 58
Issue: 8
Start page: 1527
End page: 1539
Cake washing has been used to remove compounds trapped in the pores of a filter cake. These compounds could be desired products that should be recovered. Cake washing and electrowashing have been studied and found to present many benefits, but in some cases washing filter cakes can be a slow process. In this work, electrowashing (EW) and pressure electrowashing (PEW) were for the first time applied to enhance the liquid flowing in the the algal filter cake, which has a very high specific resistance and low washing velocity. The new EW and PEW processes were compared with conventional pressure washing (PW) of Arthrospira platensis microalgae. Washing was carried out to extract desired biocompounds (CPC, APC and proteins) from the filter cake. The study showed that the use of a constant direct current (60 A/m2) coupled with the effect of an applied hydraulic pressure was an effective way to increase the cake washing kinetics. It also demonstrated that it was possible to extract proteins and pigments by applying the washing by displacement technique.
ISSN: 01496395
DOI: 10.1080/01496395.2023.2189547
Ezproxy URL: Link to full text
Type: Journal Article
Appears in Collections:Department of Chemical Engineering

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