{"title":"利用粉煤灰制备晶须莫来石陶瓷膜，实现高效油水分离","authors":"","doi":"10.1016/j.ceramint.2024.06.082","DOIUrl":null,"url":null,"abstract":"<div><p><span>Mullite<span><span> ceramic membrane is considered as </span>microfiltration membrane suitable for oil-water </span></span><strong>(</strong>O/W<strong>)</strong><span><span><span> emulsion wastewater treatment. This study presented a facile sintering approach to prepare mullite ceramic membrane from coal fly ash. Various characterization techniques, such as X-Ray Diffraction (XRD), </span>Scanning Electron Microscope<span> (SEM), shrinkage and apparent porosity, </span></span>bending strength etc. were used to reveal the effect of MoO</span><sub>3</sub><span> addition and sintering temperature<span> on ceramic membrane. At sintering temperature 1300 °C, adding 5 wt% MoO</span></span><sub>3</sub><span>, the apparent porosity of membrane is 46.04%, the bending strength is 32.11 MPa, and the average pore size<span> is 0.190 μm. Finally, whisker mullite ceramic membranes were applied for deep treatment of oily wastewater. As-synthesized ceramic membrane exhibits excellent permeate flux (391.10 L·m</span></span><sup>−2</sup>·h<sup>−1</sup><span><span>) and oil rejection (97%) for separation of O/W emulsion. The membrane fouling is mainly controlled by </span>cake filtration mechanism. Meanwhile, the ceramic membranes show good regeneration performance and acid and alkali resistance. This study provides theoretical and technical support for preparation of whisker mullite ceramic membranes from fly ash and deep treatment of oily wastewater.</span></p></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"50 18","pages":"Pages 32727-32736"},"PeriodicalIF":5.1000,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Preparation of whisker mullite ceramic membrane from coal fly ash for efficient oil-water separation\",\"authors\":\"\",\"doi\":\"10.1016/j.ceramint.2024.06.082\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p><span>Mullite<span><span> ceramic membrane is considered as </span>microfiltration membrane suitable for oil-water </span></span><strong>(</strong>O/W<strong>)</strong><span><span><span> emulsion wastewater treatment. This study presented a facile sintering approach to prepare mullite ceramic membrane from coal fly ash. Various characterization techniques, such as X-Ray Diffraction (XRD), </span>Scanning Electron Microscope<span> (SEM), shrinkage and apparent porosity, </span></span>bending strength etc. were used to reveal the effect of MoO</span><sub>3</sub><span> addition and sintering temperature<span> on ceramic membrane. At sintering temperature 1300 °C, adding 5 wt% MoO</span></span><sub>3</sub><span>, the apparent porosity of membrane is 46.04%, the bending strength is 32.11 MPa, and the average pore size<span> is 0.190 μm. Finally, whisker mullite ceramic membranes were applied for deep treatment of oily wastewater. As-synthesized ceramic membrane exhibits excellent permeate flux (391.10 L·m</span></span><sup>−2</sup>·h<sup>−1</sup><span><span>) and oil rejection (97%) for separation of O/W emulsion. The membrane fouling is mainly controlled by </span>cake filtration mechanism. Meanwhile, the ceramic membranes show good regeneration performance and acid and alkali resistance. This study provides theoretical and technical support for preparation of whisker mullite ceramic membranes from fly ash and deep treatment of oily wastewater.</span></p></div>\",\"PeriodicalId\":267,\"journal\":{\"name\":\"Ceramics International\",\"volume\":\"50 18\",\"pages\":\"Pages 32727-32736\"},\"PeriodicalIF\":5.1000,\"publicationDate\":\"2024-06-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ceramics International\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S027288422402488X\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ceramics International","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S027288422402488X","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
Preparation of whisker mullite ceramic membrane from coal fly ash for efficient oil-water separation
Mullite ceramic membrane is considered as microfiltration membrane suitable for oil-water (O/W) emulsion wastewater treatment. This study presented a facile sintering approach to prepare mullite ceramic membrane from coal fly ash. Various characterization techniques, such as X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM), shrinkage and apparent porosity, bending strength etc. were used to reveal the effect of MoO3 addition and sintering temperature on ceramic membrane. At sintering temperature 1300 °C, adding 5 wt% MoO3, the apparent porosity of membrane is 46.04%, the bending strength is 32.11 MPa, and the average pore size is 0.190 μm. Finally, whisker mullite ceramic membranes were applied for deep treatment of oily wastewater. As-synthesized ceramic membrane exhibits excellent permeate flux (391.10 L·m−2·h−1) and oil rejection (97%) for separation of O/W emulsion. The membrane fouling is mainly controlled by cake filtration mechanism. Meanwhile, the ceramic membranes show good regeneration performance and acid and alkali resistance. This study provides theoretical and technical support for preparation of whisker mullite ceramic membranes from fly ash and deep treatment of oily wastewater.
期刊介绍：
Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties.
Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour.
Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.
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