Waste-to-resource preparation of a porous ceramic membrane support featuring elongated mullite whiskers with enhanced porosity and permeance

Zhu, Li; Dong, Yingchao; Hampshire, Stuart; Cerneaux, Sophie; Winnubst, Louis

doi:10.1016/j.jeurceramsoc.2014.09.016

Cited by 106 publications

(42 citation statements)

References 37 publications

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“…The advantages of using aluminum sludge are the small particle sizes and less thermally stable properties of its aluminum hydroxides content, which would readily mix and react with silica source to form mullite upon sintering. [18] porous mullite coal fly ash + bauxite 1200-1550 mixing, pressing 2009 [19] porous mullite coal fly ash + bauxite 1100-1500 mixing, pressing 2015 [20] porous mullite/corundum coal fly ash + bauxite 1100-1400 mixing, pressing 2015 [21] porous mullite coal fly ash + bauxite 1200-1500 mixing, pressing 2014 [22] mullite coal fly ash + bauxite Plasma heating mixing 2011 [23] mullite coal fly ash + bauxite 1300-1550 mixing, pressing 2011 [24] porous mullite coal fly ash + bauxite 1300-1500 mixing, pressing 2010 [25] mullite coal fly ash + bauxite 1000-1600 mixing, pressing 2008 [26] mullite/alumina coal fly ash + bauxite 1000-1200 mixing, pressing 2008 [27] Glass ceramics coal fly ash 1050-1500 mixing 2011 [28] mullite coal fly ash 1300-1600 mixing, molding 2010 [29] mullite coal fly ash 1200-1600 leaching, molding 2015 [30] Glass Coal fly ash is an abundant waste product obtained from the combustion of pulverized coal in coal-fired thermal power plants. It consists of fine inorganic particles with main compositions of Al 2 O 3 and SiO 2 , which is especially suitable for the fabrication of mullite-based ceramics.…”

Section: Starting Materialsmentioning

confidence: 99%

A Review on Synthesis of Mullite Ceramics from Industrial Wastes

et al. 2019

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Some industrial wastes are shown to be useful in the production of mullite ceramics. These industrial wastes are rich in certain metal oxides such as silica (SiO2) and alumina (Al2O3). This gives wastes the potential to be used as a starting material source for mullite ceramics preparation. The purpose of this review paper is to compile and review various mullite ceramics preparation methods that utilized a variety of industrial wastes as starting materials. This review also describes the sintering temperatures and chemical additives used in the preparation and its effects. A comparison of both mechanical strength and thermal expansion of the reported mullite ceramics prepared from various industrial wastes were also addressed in this work.

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Section: Starting Materialsmentioning

confidence: 99%

A Review on Synthesis of Mullite Ceramics from Industrial Wastes

et al. 2019

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“…47) While at 50 wt % rice husk ash the alumina dissolved into the glassy phase of mullite to produce sillimanite (Al 2 SiO 5 ) phase. 36) All of these ceramic phases affect the mechanical properties of porous alumina ceramics. Figure 10 presents the pore size distribution for the porous alumina ceramic samples using different pore-forming agents, i.e.…”

Section: )31)mentioning

confidence: 99%

Preparation and characterization of porous alumina ceramics using different pore agents

Ali

Hanim

Tahir

et al. 2017

J. Ceram. Soc. Japan

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Graphite waste from primary batteries, active yeast and commercial rice husk ash have been used as pore-forming agents to fabricate porous alumina ceramics using a fugitive materials technique. The pore-forming agent ratios were between 10 to 50 wt %. The effects of the pore-forming agent ratios on the mechanical properties, the porosity and the microstructure have been investigated in this study. The results showed that through increasing the pore-forming agent ratio for graphite waste, yeast and rice husk ash, the porosity increased from 37.3 to 61.1%, 30.2 to 63.8% and 42.9 to 49.0%, respectively. The hardness also decreased from 172.6 to 38.1 HV 1 and from 160.6 to 15.0 HV 1 for porous alumina ceramics using graphite waste and yeast as pore-forming agents, respectively. However, the hardness of the porous alumina ceramics with rice husk ash as a pore-forming agent increased at 30 wt % (150.9 HV 1 ) and 50 wt % (158.9 HV 1 ). The tensile strength for porous alumina ceramics using graphite waste and yeast as pore-forming agents decreased from 24.9 to 14.3 MPa and from 26.2 to 5.4 MPa. The compressive strength decreased from 112.3 to 34.3 MPa and from 19.5 to 1.8 MPa, respectively. However, for porous alumina ceramics using rice husk ash, the tensile strength increased at 30 wt % (24.1 MPa) and 50 wt % (21.9 MPa). The compressive strength also increased at 30 wt % (69.7 MPa) and at 50% (60.1 MPa).

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“…For commercial membrane applications, alumina is the most common material, but this material requires high sintering temperatures (generally greater than 1500°C) that increases the membrane cost . Therefore, several materials have been proposed for the fabrication of ceramic membranes, including the use of kaolin, mullite, calcite, diatomite, and dolomite . The ceramic material should present the required mechanical strength, stability, and selectivity for the produced membrane.…”

Section: Introductionmentioning

confidence: 99%

Influence of sintering temperature on the morphology of ceramic hollow fibers prepared from niobium pentoxide

Ferreira

Bessa

Cardoso

et al. 2018

Int J Applied Ceramic Tech

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Ceramic hollow fibers were prepared by the phase inversion and sintering method using niobium pentoxide (Nb 2 O 5 ) as an innovative starting material. X-ray diffraction and Raman analyses revealed the same monoclinic crystalline phase for the ceramic material, H-Nb 2 O 5 , at all the evaluated sintering temperatures. According to SEM images, the starting material was composed of polydisperse particles of irregular size and shape with sizes ranging from 12.5 to 89.7 μm. The increase in the sintering temperature caused particles agglomeration. In the hollow fiber precursor (without sintering), Nb 2 O 5 grains were surrounded by the coagulated polymer. The polymeric phase was eliminated when the fibers were sintered at temperatures above 600°C. When sintered at 1350°C, the outer surface of the fiber presented elongated crystals of well-defined shape, while agglomerated round shape grains were observed at the inner surface of the fiber. Formation of these elongated crystals was probable due to the material sintering at high temperatures (up to 1350°C) for more than 300 minutes. This study demonstrated the potential for general applicability of niobium pentoxide to fabricate ceramic hollow fiber membranes. K E Y W O R D Shollow fibers, niobium pentoxide, phase inversion, sintering technique

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Waste-to-resource preparation of a porous ceramic membrane support featuring elongated mullite whiskers with enhanced porosity and permeance

Cited by 106 publications

References 37 publications

A Review on Synthesis of Mullite Ceramics from Industrial Wastes

A Review on Synthesis of Mullite Ceramics from Industrial Wastes

Preparation and characterization of porous alumina ceramics using different pore agents

Influence of sintering temperature on the morphology of ceramic hollow fibers prepared from niobium pentoxide

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