Porous Ceramic Supports for Membranes Prepared from Kaolin (DD3) and Calcite Mixtures

Harabi, Abdelhamid; Boudaira, B.; Bouzerara, Ferhat; Foughali, Lazhar; Zenikheri, F.; Guechi, A.; Ghouil, Boudjemaa; Condom, S.

doi:10.12693/aphyspola.127.1164

Cited by 19 publications

(18 citation statements)

References 36 publications

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“…In this work, the long-term goal is the development of a low cost anorthite from inexpensive raw materials, such as kaolin and calcite (CaCO 3 ) using a modified milling system. Many works have already been published for appreciating these native raw materials including bioceramics [9][10][11][12][13][14][15][16][17], advanced ceramics [18][19][20][21][22][23][24][25][26][27] and ceramic membranes [28][29][30][31][32][33][34][35][36][37][38][39][40][41][42]. Most of these publications are closely related to this work and clearly highlight their possible applications.…”

Section: Cerâmicas De Boa Qualidade Têm Alto Custo O Que Limita O Sementioning

confidence: 99%

“…Most of these publications are closely related to this work and clearly highlight their possible applications. As far as ceramic membranes publications are concerned [28][29][30][31][32][33][34][35][36][37][38][39][40][41][42], a lot of low cost materials were also fabricated using the abundantly available raw materials as mentioned above. More recently, porous tubular ceramic composite microfiltration membranes were prepared by an extrusion method using kaolin and calcium carbonates as starting materials, carried out in [42].…”

Section: Cerâmicas De Boa Qualidade Têm Alto Custo O Que Limita O Sementioning

confidence: 99%

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Mechanical properties of anorthite based ceramics prepared from kaolin DD2 and calcite

et al. 2017

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Anorthite is widely spread in nature and belongs to the plagioclase group of rock forming minerals. Plagioclases represent a continuous series of solid solutions between anorthite (CaO.Al 2 O 3 .2SiO 2 ) and albite (Na 2 O.Al 2 O 3 .6SiO 2 ) and form an enormous group of triclinic minerals. harabi52@gmail.com, Zaiou_21@yahoo.fr, guechia@yahoo.fr, semouni84@gmail.com, kanour17@yahoo.fr, foughali_lazhar@yahoo.fr, zouaisouheila@yahoo.fr, mezahif@yahoo.fr, guerfatiha@gmail.com Mineralogically, anorthite is reported as a chemically weak mineral, resulting in a basic reaction when dissolved into boiling water, while strong acidic and basic solutions dissolve it. Glass-ceramics and ceramics with crystalline anorthite are mainly used in electrical, thermo-mechanical and water resistance applications [1][2][3][4]. Anorthite is an important technical ceramic material that has good physical properties, such as very low thermal expansion coefficient, low dielectric constant and loss, good thermal shock resistance, and high creep resistance at high AbstractGood quality ceramics costs a lot that has limited their use in developing countries. This work was devoted to prepare low-cost and good quality anorthite based ceramics. The proposed composition was 80 wt% kaolin (DD2 type) and 20 wt% calcium oxide (CaO). The choice of these raw materials was dictated by their natural abundance coupled with a modified milling system, as another interesting advantage. Previous studies have shown that a simple vibratory multidirectional milling system using bimodal distribution of highly resistant ceramic milling elements has been successfully applied for obtaining fine powders. The influence of the relatively lower sintering temperature, ranging from 800 to 1100 °C, on the porosity and the average pore size (APS) have been investigated. The APS and the porosity values of samples sintered at 950 °C were about 1 μm and 4%, respectively. The best Vickers microhardness and 3-point bending strength values for these sintered samples, using this proposed milling system, were 7.1 GPa and 203 MPa, respectively. Finally, the crystalline phase evolution during heat treatment was investigated by X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscopy techniques.

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Section: Cerâmicas De Boa Qualidade Têm Alto Custo O Que Limita O Sementioning

confidence: 99%

Section: Cerâmicas De Boa Qualidade Têm Alto Custo O Que Limita O Sementioning

confidence: 99%

Mechanical properties of anorthite based ceramics prepared from kaolin DD2 and calcite

et al. 2017

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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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“…[1,2]. In addition, kaolin can be utilized for management of waste, preparation of geopolymers, membranes, geopolymer-based composites [3][4][5], intercalates and zeolites. Metakaolin is produced by calcination of kaolin rock.…”

Section: Introductionmentioning

confidence: 99%

“…Special Issue of the 6th International Congress & Exhibition (APMAS2016), Maslak, Istanbul, Turkey, June [1][2][3]2016 Thermal Decomposition Kinetics of Algerian Tamazarte Kaolin by Differential Thermal Analysis (DTA) In the present study, the kinetics of meta-kaolinite (Al2O3·2SiO2) formation from Algerian Tamazarte kaolin was investigated by using differential thermal analysis. The differential thermal analysis and the thermogravimetric experiments were carried out on samples between room temperature and 1400…”

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confidence: 99%

Thermal Decomposition Kinetics of Algerian Tamazarte Kaolin by Differential Thermal Analysis (DTA)

et al. 2017

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In the present study, the kinetics of meta-kaolinite (Al2O3·2SiO2) formation from Algerian Tamazarte kaolin was investigated by using differential thermal analysis. The differential thermal analysis and the thermogravimetric experiments were carried out on samples between room temperature and 1400• C, at heating rates from 10 to 40• C min −1 . X-ray diffraction was used to identify the phases present in the samples. The activation energies measured by differential thermal analysis from isothermal and non-isothermal treatments using Johnson-MehlAvrami methods with Ligero approximation and using Kissinger-Akahira-Sunose methods were around 145 and 159 kJ/mol, respectively. The Avrami parameter n which indicates the growth morphology parameters were found to be almost equal to 1.60, using non-isothermal treatments, and equal to 1.47 using isothermal treatments. The numerical factor which depends on the dimensionality of crystal growth was 1.60 obtained using Matusita et al. equation. The frequency factor calculated using the isothermal treatment is equal to 1.173 × 10 7 s −1 . Analysis of the results have shown that bulk nucleation was dominant during kaolinite transformation, followed by three-dimensional growth of meta-kaolinite with polyhedron-like morphology, controlled by diffusion from a constant number of nuclei.

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Porous Ceramic Supports for Membranes Prepared from Kaolin (DD3) and Calcite Mixtures

Cited by 19 publications

References 36 publications

Mechanical properties of anorthite based ceramics prepared from kaolin DD2 and calcite

Mechanical properties of anorthite based ceramics prepared from kaolin DD2 and calcite

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

Thermal Decomposition Kinetics of Algerian Tamazarte Kaolin by Differential Thermal Analysis (DTA)

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