Enhanced Performance of Fly Ash-Based Supports for Low-Cost Ceramic Membranes with the Addition of Bauxite
| Autor: | Minghui Qiu, Xianfu Chen, Dong Zou, Wan Fan, Jingrui Xu, Yiqun Fan |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Sintering Filtration and Separation Mullite TP1-1185 Permeance engineering.material Article Chemical engineering acid/alkali corrosion resistance Chemical Engineering (miscellaneous) Ceramic Shrinkage Chemical technology Process Chemistry and Technology Metallurgy ceramic supports bauxite Bauxite low-cost ceramic membranes Ceramic membrane fly ash visual_art Fly ash engineering visual_art.visual_art_medium TP155-156 |
| Zdroj: | Membranes Volume 11 Issue 9 Membranes, Vol 11, Iss 711, p 711 (2021) |
| ISSN: | 2077-0375 |
| Popis: | Support is a necessary foundation for ceramic membranes to achieve high performance. Finding the optimum balance between high performance and low cost is still a significant challenge in the fabrication of ceramic supports. In this study, low-cost fly ash-based ceramic supports with enhanced performance were prepared by the addition of bauxite. The pore structure, mechanical strength, and shrinkage of fly ash/bauxite supports could be tuned by optimizing the bauxite content and sintering temperature. When the sintering temperature and bauxite content were controlled at 1300 °C and 40 wt%, respectively, the obtained membrane supports exhibited a high pure water permeance of approximately 5.36 m3·m−2·h−1·bar−1 and a high bending strength of approximately 69.6 MPa. At the same time, the optimized ceramic supports presented a typical mullite phase and excellent resistance to acid and alkali. This work provides a potential route for the preparation of ceramic membrane supports with characteristics of low cost and high performance. |
| Databáze: | OpenAIRE |
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