Fabrication of low-cost ceramic ultrafiltration membrane made from bentonite clay and its application for soluble dyes removal

By S. Saja, A. Bouazizi, B. Achiou, H. Ouaddari, A. Karim, M. Ouammou, A. Aaddane, J. Bennazha, S. Alami Younssi. Journal of the European Ceramic Society, 2020

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Abstract This work reports the preparation and the characterization of low-cost ultrafiltration bentonite membrane deposited on ceramic perlite support. The bentonite layer was obtained by spin-coating process of colloidal solution with different bentonite contents ranging from 0.25 to 1.50 wt.%, followed by sintering at 500 °C. It was confirmed that optimized membrane prepared with 0.75 wt.% of bentonite is homogeneous and exhibits a good adhesion on perlite support. Furthermore, the membrane has a thickness of 6 μm, a pore size of 13 nm and a permeability of 30 L/h.m2.bar. In addition, the filtration performance of bentonite membrane was evaluated by tangential filtration of Direct Red 80 and Rhodamine B solutions under pressure of 4 bar. The effect of filtration time and initial feed concentration on flux and rejection was studied and showed that the rejection of Direct Red 80 and Rhodamine B could achieve value of 97.0 and 80.1 % respectively.

Subfields: Biomaterials, Renewable Energy, Sustainability and the Environment, Water Science and Technology

View Paper: https://www.semanticscholar.org/paper/519a9f67d6e215bc5a39ffc3e7018e3238d7fbca