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Publikācija: Phosphate Mine Tailing Recycling in Membrane Filter Manufacturing: Microstructure and Filtration Suitability

Publication Type Scientific article indexed in SCOPUS or WOS database
Funding for basic activity Other research projects
Defending: ,
Publication language English (en)
Title in original language Phosphate Mine Tailing Recycling in Membrane Filter Manufacturing: Microstructure and Filtration Suitability
Field of research 2. Engineering and technology
Sub-field of research 2.4 Chemical engineering
Research platform Materials, Processes, and Technologies
Authors Mohamed Loutou
W. Misrar
M. Koudad
M. Mansori
Līga Grase
C. Favotto
Y. Taha
R. Hakkou
Keywords ceramic membrane, experimental desing, filtration, industrial waste, phosphate mine tailings
Abstract Ceramic membrane filters based on industrial by-products can be considered to be a valorization alternative of phosphate mine tailings, even more so if these ceramic membranes are used in the industrial wastewater treatment due to their good mechanical, chemical, and thermal resistance. The depollution of textile industry rejections with this method has not been studied in detail previously. In this work, ceramic membrane filters have been manufactured from natural clay and phosphate mine tailings (phosphate sludge). Blends of the abovementioned materials with a pore-forming agent (sawdust, up to 20 wt. %) were investigated in the range 900-1100 ◦C using thermal analysis, X-ray diffraction, scanning electron microscopy, and mercury porosimetry. Ceramic properties were measured as a function of firing temperature and sawdust addition. Filtration tests were carried out on samples with advantageous properties. The results showed that gehlenite together with diopside neoformed from lime decomposed carbonates and breakdown products of clay minerals, while calcium phosphate derived from partial decomposition of fluorapatite. Both quartz and fluorapatite resisted heating. The results of the experimental design showed that the variations of physical properties versus processing factors were well described by the polynomial model. Filtration results are quite interesting, allowing these membranes to be used in industrial effluent treatment.
DOI: 10.3390/min9050318
Hyperlink: https://www.mdpi.com/2075-163X/9/5/318 
Reference Loutou, M., Misrar, W., Koudad, M., Mansori, M., Grase, L., Favotto, C., Taha, Y., Hakkou, R. Phosphate Mine Tailing Recycling in Membrane Filter Manufacturing: Microstructure and Filtration Suitability. Minerals, 2019, Vol. 9, No. 5, pp.1-18. ISSN 2075-163X. Available from: doi:10.3390/min9050318
Additional information Citation count:
ID 29780