Ultrasonic investigation of ceramic clay membranes

Laux, Didier; Ferrandis, Jean‐Yves; Bentama, Jilali; Rguiti, Mohamed

doi:10.1016/j.clay.2005.09.001

Cited by 8 publications

(7 citation statements)

References 3 publications

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“…Porosity of the ceramic supports sintered at different temperature is calculated using the Archimedes' principle 20 : where m D is the dry support mass, m w is the mass of the support with pores filled with water (pores are filled with water under vacuum), m A is the mass of the water saturated support measured in water (A refers to Archimedes), and p is the porosity. Figure 7 depicts the porosity of the supports as a function of temperature.…”

Section: Resultsmentioning

confidence: 99%

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Development of Ceramic Supports Derived from Low-Cost Raw Materials for Membrane Applications and its Optimization Based on Sintering Temperature

Monash

Pugazhenthi

2009

International Journal of Applied Ceramic Technology

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In this work, a macroporous ceramic support was fabricated using inexpensive clays available in India by uniaxial compaction technique. Green ceramic supports were developed by mixing of kaolin, pyrophyllite, feldspar, ballclay, quartz, and calcium carbonate of desired composition with polyvinyl alcohol as a binder and were sintered at different temperatures (850°C, 900°C, 950°C, and 1000°C). The raw materials and sintered supports were characterized using thermogravimetric analysis, particle size distribution (PSD), X‐ray diffraction, and scanning electron micrograph analysis. The effect of sintering temperature on porosity, mean pore size, pore size distribution, shrinkage, flexural strength, and pure water permeability was investigated. Chemical stability tests for the sintered supports were conducted with 20 wt% of H2SO4, HCl, and NaOH solutions and the supports showed good chemical resistance. The porosity of the sintered supports was in the range of 41–46%. It was observed that the average pore diameter and flexural strength of the supports increases with increase in sintering temperature. Based on these results, the support sintered at 950°C (porosity=44%, mechanical strength=28 MPa, and average pore diameter=1.01 μm) was considered as the optimum support for membrane applications. Solvent permeation studies were conducted for 950°C sintered support and the results confirmed that the support was hydrophobic in nature.

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Section: Resultsmentioning

confidence: 99%

“…Again, an increase in the shrinkage for 10001C sintered support indicates the internal rearrangement (densification process) of the support, which may lead to blind pores. 19 Porosity of the ceramic supports sintered at different temperature is calculated using the Archimedes' principle 20 :…”

Section: Support Analysismentioning

confidence: 99%

Development of Ceramic Supports Derived from Low-Cost Raw Materials for Membrane Applications and its Optimization Based on Sintering Temperature

Monash

Pugazhenthi

2009

International Journal of Applied Ceramic Technology

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“…The prepared oil-water emulsion (concentration of 200 mg/L) was utilized for microfiltration experiments. The experiments were performed in dead-end filtration setup with varying applied pressures [30,31]. In all experiments, the feed volume of 150 mL was filled into the filtration setup.…”

Section: Separation Of Oil-water Emulsionmentioning

confidence: 99%

“…Then the membrane was immersed in water to measure the weight of the membrane when it was saturated with water (W A ). The porosity (ε) of the membrane was determined using the following relation [29,30]:…”

Section: Porositymentioning

confidence: 99%

Development of ceramic membranes from low-cost clays for the separation of oil–water emulsion

Suresh

Pugazhenthi

2016

Desalination and Water Treatment

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A B S T R A C TThis work addresses the fabrication of ceramic microfiltration membranes by uniaxial dry compaction method. Four membranes, namely SP1, SP2, SP3, and SP4 were prepared with various compositions of fly ash and titanium dioxide (TiO 2 ) followed by sintering at 1,100˚C. The raw materials and the prepared membranes were characterized by particle size distribution, X-ray diffraction and field emission scanning electron microscope, porosity, pore size, and chemical and mechanical stabilities. As the TiO 2 content increases in the precursor formulations, the porosity and mechanical stability of the membranes also increase while the average pore size reduces from 2.97 to 1.32 μm. The chemical stability of all the membranes demonstrates to be better in both acidic and basic medium. The performance of the membrane (SP4) is examined for the separation of oil-water emulsion and the membrane exhibits a maximum oil rejection of 99.2%.

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“…Recently, the major advance in the technology was the application to detect the early stages of biofilm growth on polymeric surfaces (Kujundzic et al, 2007). In addition, the UTDR has been successfully used for membrane characterization such as pore size and thickness measurement and membrane compaction phenomenon (Aerts et al, 2001;Gomez Alvarez-Arenas, 2003;Kools et al, 1998;Laux et al, 2005;Ramaswamy et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Reverse osmosis desalination and reclamation : control of colloidal and biofouling

Chong¹

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First and foremost, I would like to express my deepest gratitude to my supervisor and mentor Professor Anthony G. Fane. Thank you for believing in me and giving me the guidance in the research project. I am gratified and honoured for having the opportunity to learn from a person of high calibre and with great knowledge in membrane technology. Also, I would like to thank my co-supervisor Dr. Wong Fook Sin for his encouragement and support during my study. I am indebted to Professor Chai Guoyong for her extensive contribution in the research work on ultrasonic technique. The work would not have been possible without her expert advice. Thank you to Professor Bill Krantz and Professor Alan Greenberg for sharing the knowledge on ultrasonic technique and fruitful discussion on the experimental results. My sincere thanks go to Dr. Wang Rong for her help in the modeling work; the late Professor Stephen Tay for his valuable suggestions in the biological work; Dr. Zhuang Weiqin for supplying the bacteria cultures; Miss Wu Bing for her help in the microbiological analysis; Dr. Li Zhansheng for his help in setting up the fiber optic sensor unit; Dr. Li Hongyu for her help in setting up the reverse osmosis rig; and fellow attachment students from the Ngee Ann Polytechnic (Hu Changqing,

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Ultrasonic investigation of ceramic clay membranes

Cited by 8 publications

References 3 publications

Development of Ceramic Supports Derived from Low-Cost Raw Materials for Membrane Applications and its Optimization Based on Sintering Temperature

Development of Ceramic Supports Derived from Low-Cost Raw Materials for Membrane Applications and its Optimization Based on Sintering Temperature

Development of ceramic membranes from low-cost clays for the separation of oil–water emulsion

Reverse osmosis desalination and reclamation : control of colloidal and biofouling

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