New low-cost ceramic microfiltration membrane made from natural magnesite for industrial wastewater treatment

[Display omitted] •Novel low-cost ceramic microfiltration membrane made from natural magnesite.•The effect of sintering on magnesite membrane properties was investigated.•The optimized magnesite membrane showed a high turbidity removal of 99.9 %.•Four fouling models were used to fit flux decline dur...

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Bibliographic Details
Published in:Journal of environmental chemical engineering 2020-08, Vol.8 (4), p.103906, Article 103906
Main Authors: Manni, A., Achiou, B., Karim, A., Harrati, A., Sadik, C., Ouammou, M., Alami Younssi, S., El Bouari, A.
Format: Article
Language:English
Subjects:
Ceramic membrane
Magnesite
Microfiltration
Sintering
Turbidity
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Summary:[Display omitted] •Novel low-cost ceramic microfiltration membrane made from natural magnesite.•The effect of sintering on magnesite membrane properties was investigated.•The optimized magnesite membrane showed a high turbidity removal of 99.9 %.•Four fouling models were used to fit flux decline during filtration of textile wastewater. This paper mainly focuses on the preparation of new low-cost ceramic microfiltration membrane made from natural magnesite. Firstly, local Moroccan magnesite was deeply characterized in order to understand its chemical and mineralogical composition, and its thermal behavior. It was confirmed that used natural magnesite exhibits high purity degree in terms of magnesite mineral. Next, flat magnesite membrane was fabricated via uniaxial pressing and sintering methods. The effect of sintering in the range 900−1200 °C on morphology, porosity, pore size, permeability and mechanical strength was investigated. Based on experimental results, the optimized membrane (sintered at 1100 °C) has a porosity of 48.15 %, a pore size of 1.12 μm, a water permeability of 922 L  h−1  m-2  bar-1 and a mechanical strength of 6.1 MPa. Finally, the optimized magnesite membrane was subjected to filtration of industrial textile wastewater in order to evaluation its performance as microfiltration membrane. Importantly, experimental results are clearly demonstrated that magnesite membrane effectively clarifies textile wastewater. It was showed that turbidity and chemical oxygen demand removals could achieve 99.9 and 69.7 %, respectively.
ISSN:2213-3437
2213-3437
DOI:10.1016/j.jece.2020.103906