Elaboration and characterization of ceramic membrane supports from raw materials used in microfiltration

Ghouil, Boudjemaa; Harabi, Abdelhamid; Bouzerara, Ferhat; Brihi, N.

doi:10.1080/19443994.2015.1021098

Cited by 31 publications

(16 citation statements)

References 24 publications

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“…Related to this work, Harabi and co-workers [37][38][39][40][41][42][43][44][45][46][47][48] have investigated most of the ceramic support fabrication from kaolin and reported mechanical strength value and porosity. Based on the Table 3 Gas permeation performance of kaolin ceramic support at different kaolin particle sizes and contents.…”

Section: Comparison Between Mechanical Strength Value Of Samples Prepmentioning

confidence: 94%

Effect of kaolin particle size and loading on the characteristics of kaolin ceramic support prepared via phase inversion technique

Hubadillah

Harun

Othman

et al. 2016

Journal of Asian Ceramic Societies

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a b s t r a c tIn this study, low cost ceramic supports were prepared from kaolin via phase inversion technique with two kaolin particle sizes, which are 0.04-0.6 m (denoted as type A) and 10-15 m (denoted as type B), at different kaolin contents ranging from 14 to 39 wt.%, sintered at 1200 • C. The effect of kaolin particle sizes as well as kaolin contents on membrane structure, pore size distribution, porosity, mechanical strength, surface roughness and gas permeation of the support were investigated. The support was prepared using kaolin type A induced asymmetric structure by combining macroporous voids and sponge-like structure in the support with pore size of 0.38 m and 1.05 m, respectively, and exhibited ideal porosity (27.7%), great mechanical strength (98.9 MPa) and excellent gas permeation. Preliminary study shows that the kaolin ceramic support in this work is potential to gas separation application at lower cost.

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Section: Comparison Between Mechanical Strength Value Of Samples Prepmentioning

confidence: 94%

Effect of kaolin particle size and loading on the characteristics of kaolin ceramic support prepared via phase inversion technique

Hubadillah

Harun

Othman

et al. 2016

Journal of Asian Ceramic Societies

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“…As a result, powerful and continuous collisions may occur between the hard milling balls and the powder particles which substantially reduce the powder particle size. Many interesting published works have used this original milling system [23][24][25]; they concern hydroxyapatite based ceramics [26][27][28], wollastonite [29][30][31], diopside [32][33][34], anorthite [35,36], and others [37][38][39][40][41][42]. By drying, the test specimens for firing tests, shaped as discs of about 13 mm diameter and about 2 mm thickness, were obtained after uniaxial pressing of powders at 75 MPa.…”

Section: Methodsmentioning

confidence: 99%

Sintering and dielectric properties of a technical porcelain prepared from economical natural raw materials

et al. 2016

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In this study, the production of a technical porcelain, for the ceramic dielectric applications by using economical natural raw materials, was investigated. The basic porcelain composition was selected consisting of 30 wt% kaolin, 45 wt% potash-feldspar and 25 wt% quartz. The obtained phases in the sintered samples were investigated by X-ray diffraction, Fourier transform infrared spectroscopy analysis, and scanning electron microscopy images. It has been confirmed by these techniques that the main crystalline phases were quartz and mullite. Dielectric measurements of technical porcelains have been carried out at 1 kHz from room temperature to 200 °C. The dielectric constant, loss factor, dielectric loss tangent, and resistivity of the porcelain sample sintered at 1160 °C were 22-25, 0.32-1.80, 0.006-0.07, and 0.2-9 x 10 13 W.cm, respectively. The value of dielectric constant was significantly high when compared to that of conventional porcelains which did not exceed generally 9. ResumoNeste estudo, foi investigada a produção de uma porcelana técnica para aplicações cerâmicas dielétricas pelo uso de matériasprimas naturais de baixos custos. A composição básica da porcelana foi selecionada consistindo de 30% de caulim, 45% de feldspato potássico e 25% de quartzo. As fases obtidas nas amostras sinterizadas foram investigadas por difração de raios X, espectroscopia no infravermelho com transformada de Fourier e imagens de microscopia eletrônica de varredura. Foi confirmado por estas técnicas que as principais fases cristalinas foram quartzo e mulita. Medidas dielétricas das porcelanas técnicas foram realizadas a 1 kHz entre a temperatura ambiente de 200 °C. A constante dielétrica, fator de perda, tangente de perda dielétrica e resistividade da amostra de porcelana sinterizada a 1160 °C foram 22-25, 0,32-1,80, 0,006-0,07 e 0,2-9 x 10 13 .cm, respectivamente. O valor de constante dielétrica foi significativamente alto quando comparado ao de porcelanas convencionais que geralmente não excede 9. Palavras-chave: porcelana, caulim, feldspato, quartzo, sinterização, propriedades dielétricas.

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“…Several materials are usually employed for the preparation of ceramics membranes, such as alumina, zirconia and titania. However, natural raw materials, such as kaolin (chemical structure: [57,58] are more and more used for preparing porous ceramics membranes [9][10][11][12][59][60][61][62][63][64][65][66][67][68] and it has been used in this work as a starting material.…”

Section: Introductionmentioning

confidence: 99%

Development and characterization of tubular composite ceramic membranes using natural alumino-silicates for microfiltration applications

Ghouil

Harabi

Bouzerara

et al. 2015

Materials Characterization

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The preparation and characterization of porous tubular ceramic composite microfiltration membranes, using kaolins and calcium carbonates, were reported. The porous gehlenite (2CaO·Al 2 O 3 ·SiO 2 ) and anorthite (CaO·Al 2 O 3 ·2SiO 2 ) based ceramics were obtained by a solid state reaction. A ceramic support, sintered at 1250°C, within an average pore size of about 8 μm, a porosity of about 47% and a compression strength around 40 MPa, was prepared. The microfiltration active top layer was added on the support by a slip casting from clay powder suspensions. The novel microfiltration membrane layer has a thickness of 40 μm and an APS value of about 0.2 μm. This average pore size value was improved and considerably lower than those reported in the literature (0.5 μm). The performance of the novel microfiltration ceramic membrane was determined for evaluating both the water permeability and rejection. This proved the potentiality of the membrane produced in the microfiltration field. Moreover, the good adhesion, between the support and the active microfiltration layer membranes, was also proved. A correlation between microstructures of used powders and physicochemical properties was discussed. Finally, the origin of the unique two powder order membrane depositions was also proposed.

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Elaboration and characterization of ceramic membrane supports from raw materials used in microfiltration

Cited by 31 publications

References 24 publications

Effect of kaolin particle size and loading on the characteristics of kaolin ceramic support prepared via phase inversion technique

Effect of kaolin particle size and loading on the characteristics of kaolin ceramic support prepared via phase inversion technique

Sintering and dielectric properties of a technical porcelain prepared from economical natural raw materials

Development and characterization of tubular composite ceramic membranes using natural alumino-silicates for microfiltration applications

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