Effects of sintering temperature on the filtration and mechanical properties of ceramic water filters
This paper presents the results of a combined experimental and theoretical study of the effects of sintering temperature on the mechanical and filtration properties of clay ceramic water filters (CWFs). CWFs produced from 50:50 volume proportion mixtures of clay and sieved sawdust (porogen) were sin...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2022-12-01
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| Series: | Cogent Engineering |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/23311916.2022.2119536 |
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| author | Oluwole A. Omoniyi Ali A. Salifu John D. Obayemi Oluwaseun K. Oyewole Pierre-Marie Nigay Omololu Akin-Ojo Winston O. Soboyejo |
| author_facet | Oluwole A. Omoniyi Ali A. Salifu John D. Obayemi Oluwaseun K. Oyewole Pierre-Marie Nigay Omololu Akin-Ojo Winston O. Soboyejo |
| author_sort | Oluwole A. Omoniyi |
| collection | DOAJ |
| description | This paper presents the results of a combined experimental and theoretical study of the effects of sintering temperature on the mechanical and filtration properties of clay ceramic water filters (CWFs). CWFs produced from 50:50 volume proportion mixtures of clay and sieved sawdust (porogen) were sintered at 850°C, 900°C and 950°C to produce micro- and nano-porous structures. The sintered clay structures were then characterized using X-ray diffraction and scanning electron microscopy. The flow and filtration characteristics of the filters were then elucidated using a combination of theory and fluid flow experiments, before exploring the effects of porosity on E. coli removal and flow rates through the filter. The E. coli removal efficiency is shown to be inversely proportional to the sintering temperature, with log removal values (LRV) of 4.89, 4.59 and 4.46 for the CWFs sintered at 850°C, 900°C and 950°C, respectively. The paper also examines the effects of sintering temperature on the compressive and flexural strengths, as well as the fracture toughness of the CWFs. The compressive strengths of the CWFs increased (between 6.55 and 7.02 MPa), whereas the flexural strengths (between 3.05 and 2.22 MPa) and the fracture toughness values (between 0.21 and 0.14 MPa [Formula: see text]) both decreased in response to the increased porosities induced by the increased sintering temperature. The underlying fracture and toughening mechanisms are then elucidated before discussing the implications of the results for the fabrication, transportation, and handling of robust ceramic water filters. |
| first_indexed | 2024-03-12T18:30:17Z |
| format | Article |
| id | doaj.art-c4575dffcf064303a7233972d3d0862c |
| institution | Directory Open Access Journal |
| issn | 2331-1916 |
| language | English |
| last_indexed | 2024-03-12T18:30:17Z |
| publishDate | 2022-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Cogent Engineering |
| spelling | doaj.art-c4575dffcf064303a7233972d3d0862c2023-08-02T08:20:38ZengTaylor & Francis GroupCogent Engineering2331-19162022-12-019110.1080/23311916.2022.2119536Effects of sintering temperature on the filtration and mechanical properties of ceramic water filtersOluwole A. Omoniyi0Ali A. Salifu1John D. Obayemi2Oluwaseun K. Oyewole3Pierre-Marie Nigay4Omololu Akin-Ojo5Winston O. Soboyejo6Department of Materials Science and Engineering, African University of Science and Technology (AUST), Abuja, NigeriaMaterials Science and Engineering Program, Department of Mechanical Engineering, Worcester Polytechnic Institute (WPI), Worcester, MA, USAMaterials Science and Engineering Program, Department of Mechanical Engineering, Worcester Polytechnic Institute (WPI), Worcester, MA, USAMaterials Science and Engineering Program, Department of Mechanical Engineering, Worcester Polytechnic Institute (WPI), Worcester, MA, USAMaterials Science and Engineering Program, Department of Mechanical Engineering, Worcester Polytechnic Institute (WPI), Worcester, MA, USADepartment of Physics, University of Ibadan, Ibadan, NigeriaDepartment of Materials Science and Engineering, African University of Science and Technology (AUST), Abuja, NigeriaThis paper presents the results of a combined experimental and theoretical study of the effects of sintering temperature on the mechanical and filtration properties of clay ceramic water filters (CWFs). CWFs produced from 50:50 volume proportion mixtures of clay and sieved sawdust (porogen) were sintered at 850°C, 900°C and 950°C to produce micro- and nano-porous structures. The sintered clay structures were then characterized using X-ray diffraction and scanning electron microscopy. The flow and filtration characteristics of the filters were then elucidated using a combination of theory and fluid flow experiments, before exploring the effects of porosity on E. coli removal and flow rates through the filter. The E. coli removal efficiency is shown to be inversely proportional to the sintering temperature, with log removal values (LRV) of 4.89, 4.59 and 4.46 for the CWFs sintered at 850°C, 900°C and 950°C, respectively. The paper also examines the effects of sintering temperature on the compressive and flexural strengths, as well as the fracture toughness of the CWFs. The compressive strengths of the CWFs increased (between 6.55 and 7.02 MPa), whereas the flexural strengths (between 3.05 and 2.22 MPa) and the fracture toughness values (between 0.21 and 0.14 MPa [Formula: see text]) both decreased in response to the increased porosities induced by the increased sintering temperature. The underlying fracture and toughening mechanisms are then elucidated before discussing the implications of the results for the fabrication, transportation, and handling of robust ceramic water filters.https://www.tandfonline.com/doi/10.1080/23311916.2022.2119536ceramic water filterssintering temperatureE. coli removalfilter robustnesscompressive/flexural strengthsfracture toughness |
| spellingShingle | Oluwole A. Omoniyi Ali A. Salifu John D. Obayemi Oluwaseun K. Oyewole Pierre-Marie Nigay Omololu Akin-Ojo Winston O. Soboyejo Effects of sintering temperature on the filtration and mechanical properties of ceramic water filters Cogent Engineering ceramic water filters sintering temperature E. coli removal filter robustness compressive/flexural strengths fracture toughness |
| title | Effects of sintering temperature on the filtration and mechanical properties of ceramic water filters |
| title_full | Effects of sintering temperature on the filtration and mechanical properties of ceramic water filters |
| title_fullStr | Effects of sintering temperature on the filtration and mechanical properties of ceramic water filters |
| title_full_unstemmed | Effects of sintering temperature on the filtration and mechanical properties of ceramic water filters |
| title_short | Effects of sintering temperature on the filtration and mechanical properties of ceramic water filters |
| title_sort | effects of sintering temperature on the filtration and mechanical properties of ceramic water filters |
| topic | ceramic water filters sintering temperature E. coli removal filter robustness compressive/flexural strengths fracture toughness |
| url | https://www.tandfonline.com/doi/10.1080/23311916.2022.2119536 |
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