Sieving and Adsorption in Heterophase Alumina Ceramic Membranes for Applications in Water Treatment
Source abstract
Abstract
This study presents a ceramic membrane (MIX-CM, denoting a mixed phase) fabricated through die casting and sintering of heterophase YS-Al 2 O 3 and α-Al 2 O 3 precursors, yielding a hierarchically mesoporous structure with high porosity (60%) and well-balanced mechanical strength (42 MPa). The MIX-CM demonstrates superior chemical stability (<2% mass loss in acidic/alkaline media) and thermal stability up to 1000 °C. Its unique composite microstructure enables dual-function separation via synergistic sieving and adsorption. Under cross-flow filtration (0.5 bar, 25 °C), MIX-CM achieves high rejection of colloids (>98%), humic acid (>96%), and bovine serum albumin (92%), while exhibiting exceptional adsorption of antibiotics─tetracycline hydrochloride (99.6%) and norfloxacin (95.7%)─and selective removal of heavy metals, with Pb 2+ reduced from 492 to 3.4 μg L –1 (below WHO limits). In real surface water treatment, the membrane maintains stable UV 254 and turbidity removal at 53% and 78%, respectively. NaClO backwashing achieves 96% flux recovery, while a crushing-reconstruction strategy fully restores severely fouled membranes. The MIX-CM is economically viable, with a production cost of ∼113 USD m –2, markedly lower than commercial ceramic membranes (500–3000 USD m –2 ). These findings position MIX-CM as a scalable, cost-effective, and multifunctional solution for advanced potable water purification.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Membrane Separation Technologies · Adsorption and biosorption for pollutant removal · Layered Double Hydroxides Synthesis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials Science and Engineering
Jingdezhen Ceramic University
Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering
Guangzhou University
Department of Chemistry and Physics, Ivory V. Nelson Center for the Sciences
Lincoln University
Department of Textile Engineering, Faculty of Engineering
Daffodil International University
Shandong WEGO Blood Purification Products Co. Ltd.
Institute of Environmental Research at Greater Bay/Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education
Funding
National Key Research and Development Program of China · Basic and Applied Basic Research Foundation of Guangdong Province · National Natural Science Foundation of China · Young top-notch talent of the Guangdong Special Support Program
References (49)
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