Cordierite containing ceramic membranes from smectetic clay using natural organic wastes as pore-forming agents

Misrar, Wafa; Loutou, Mohamed; Saâdi, Latifa; Mansori, Mohammed; Waqif, Mohamed; Favotto, C.

doi:10.1016/j.jascer.2017.04.007

Cited by 30 publications

(9 citation statements)

References 37 publications

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“…However, the PVA affects the properties of the membrane support, the increase of PVA content provokes an increase of pore diameter. This effect is due of pore forming during burning out around 500°C of PVA [21][22]. The PVA is used as binder in casting process to provide sufficient strength to the body so that the green bodies can be modeled and retained in the desired shape without breaking or damage, before and during sintering process.…”

Section: Plackett-burman Design (Pbd)mentioning

confidence: 99%

Application of the Experimental Design for the Optimization of Microfiltration Membrane

Baih

Saffaj

Adam

et al. 2022

AMST

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In the present study, the effect of zirconia powder content, polyvinyl alcohol (PVA), Contact time and sintering temperature of zirconia microfiltration membrane elaboration were evaluated using Plackett-Burman design (PBD) and investigated by thickness and pore diameter. The zirconia microfiltration membrane has been prepared by the powder suspension technique. A deflocculated suspension of zirconia was obtained by mixing (5-10% w/w) of zirconia, (30-35% w/w) of PVA (12% w/w aqueous solution) as binder and water. The zirconia layer was deposited on the inner surface of clay support by slip casting with a contact time (2-5 min). After drying at room temperature, the ZrO2 membrane was sintered (800-1000°C) for 2 hours. By using PBD, sintering temperature, PVA and zirconia were recognized and selected as important effectives parameters of pore diameter; On the other hand, PVA and contact time were the main controlling parameters of the thickness of zirconia microfiltration layer. The optimal factors to elaborate the microfiltration membrane by using experimental design include a sintering temperature of 1000°C, zirconia content of 5%, PVA content of 30% and contact time of 2 min predicting a pores diameter of 0,24 µm and thickness of 24 µm.

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Section: Plackett-burman Design (Pbd)mentioning

confidence: 99%

Application of the Experimental Design for the Optimization of Microfiltration Membrane

Baih

Saffaj

Adam

et al. 2022

AMST

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“…For Mechanical strength, the temperature and particle size have a positive effect and their interaction (temperature*Particle size) exists on the left side of the straight line which mean the interaction acted antagonistically. the Heat rate factor doesn't significant [22][23][24].…”

Section: Effects Of the Processing Factors On The Physical Properties Of Support Membranementioning

confidence: 99%

Clay Ceramic Support Membrane Optimization Using Factorial Design Approach

Baih

Saffaj

Bakka

et al. 2021

AMST

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In the present study, the effect of Sintering temperature, Particle size and Heating rate of the ceramic support membrane Elaboration based on dry clay were evaluated using full factorial design and investigated by porosity and mechanical strength measures. The flat supports have been prepared from 5 g of the material with a two fraction 2 and 30 µm, the extrusion was performed using the uniaxial pressing in applicant a pressure of 12 tones, the supports sintered between 900° C and 1200°C with a different heating rate (1°C/min and 10°C/min). By using full factorial design 23, it was found that the sintering temperature is the main controlling factors of the physical properties of dry ceramic support membrane, and its increase had a positive effect on Mechanical strength and negative effect on porosity. The interactions between the factors were relatively less important, and they had different (antagonistic/synergetic) influence on the properties. The optimal factors to elaborate the support membrane include a particle size of 2 µm, sintering temperature of 950°C, Heating rate of 1°C predicting the porosity of 40, 8% and Mechanical strength of 12 MPa.

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“…Meanwhile, an atomic absorption spectrophotometer (AAS) was used in this work to determine the chemical element from heavy metals in wastewater and analyse the absorption after wastewater treatment. Textile dyes were used as wastewater consists of ferum (Fe), zinc (Zn), Generally, for the fabrication of porous ceramic materials, the pore-forming agent (temperature-sensitive components) is needed for pore creation during heat treatment (Misrar et al, 2017). The pre-drying of the green CWFs at room temperature before sintering is important to avoid cracking during sintering (bonding phase).…”

Section: Performance Characterization Of the Ceramic Water Filter With Different Additivesmentioning

confidence: 99%

“…Because of the aforementioned interesting properties of kaolin and additives based on natural minerals, this innovation appears as one of the wise approaches in improving the characteristic of green CWFs. It has earned attention from researchers as it is readily available and environment friendly (Misrar et al, 2017). Rice husk (RH) is one of the most abundant agricultural wastes produced in Asian countries such as Thailand, Philippines, India and Malaysia.…”

Section: Introductionmentioning

confidence: 99%

Characterization and performance of rice husk as additive in green ceramic water filter fabricated by slip-casting

Alias

Harun

Mansor

2020

WJE

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Purpose The purpose of this study is to investigate the using of rice husk (RH) which is a green material derived from agricultural waste with the ability to absorb heavy metal. It has been used in wastewater treatment. In this research, a kaolin-based green ceramic water filter (CWF) incorporated with two different additives (RH and zeolite-based RH ash [RHA]) was successfully fabricated. Design/methodology/approach The weight ratio of kaolin:additive was varied (90:10, 80:20 and 70:30) and fabricated via the slip-casting technique. The green CWFs were dried (60°C for 1 h), followed by sintering (1,200°C). Findings The green CWF of kaolin:RH with a weight ratio of 70:30 showed the best properties and satisfactory performance with a porous cross-section microstructure, highest porous area (4.58 µm2), good structure, lowest shrinkage (8.00%), highest porosity (45.10%), lowest density (1.79 g cm−3), highest water absorption (55.50%) and hardness (241.40 Hv). This green CWF has also achieved good permeability (42.00 L m−2h−1) and removal of the textile dye (27.88%). The satisfactory characterization and good textile dye removal performance (75.47%) were also achieved from green CWF with kaolin:zeolite at a weight ratio of 80:20. Research limitations/implications This research is focused on green CWF and zeolite at a certain amount with the specific characterization analysis methods. Practical implications The use of low-cost waste materials to treat dye wastewater from agricultural by-products/wastes sources in treating the dye will enhance the using of green material. Social implications Avoiding the waste sludge that can pollute the environment can create a health issue. The use of low-cost waste materials to treat dye wastewater from agricultural by-products/wastes sources in treating the dye can avoid the waste sludge that can pollute the environment and create serious health issue. Originality/value All the kaolin-based green CWFs incorporated with two different additives (RH and zeolite-based RHA) fabricated using a simple slip-casting technique have shown the potential to be used as a filter in wastewater treatment applications.

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Cordierite containing ceramic membranes from smectetic clay using natural organic wastes as pore-forming agents

Cited by 30 publications

References 37 publications

Application of the Experimental Design for the Optimization of Microfiltration Membrane

Application of the Experimental Design for the Optimization of Microfiltration Membrane

Clay Ceramic Support Membrane Optimization Using Factorial Design Approach

Characterization and performance of rice husk as additive in green ceramic water filter fabricated by slip-casting

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