Preparation of macroporous membrane using natural Kaolin and Tunisian lignite as a pore-forming agent

Hedfi, I.; Hamdi, Noureddine; Rodrı́guez, Miguel Á.; Srasra, Ezzeddine

doi:10.1080/19443994.2015.1058726

Cited by 8 publications

(5 citation statements)

References 49 publications

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“…There is an eminent need to search for alternative membrane materials. Various studies have been devoted to fabricating the ceramic membranes using minerals and waste materials such as clay, fly ash, bauxite, and kaolin [14][15][16]. However, these materials can be costly, are less effective for ammonia adsorption, and possess inconsistency potentially due to different batches of the waste [17].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Natural Zeolite Particle Size Toward the Ammonia Adsorption Activity in Ceramic Hollow Fiber Membrane

et al. 2020

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Natural zeolite is widely used in removing ammonia via adsorption process because of its superior ion-exchange properties. Ceramic particle size affects the adsorptivity of particles toward ammonia. In this study, hollow fiber ceramic membrane (HFCM) was fabricated from natural zeolite via phase inversion. The effect of natural zeolite particle size toward the properties and performance of HFCM was evaluated. The results show that the HFCM with smaller particle sizes exhibited a more compact morphological structure with better mechanical strength. The adsorption performance of HFCM was significantly improved with smaller particle sizes because of longer residence time, as proven by the lower water permeability. A high adsorption performance of 96.67% was achieved for HFCM with the smallest particle size (36 μm). These findings provide a new perspective on the promising properties of the natural zeolite-derived HFCM for ammonia removal.

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Section: Introductionmentioning

confidence: 99%

Influence of the Natural Zeolite Particle Size Toward the Ammonia Adsorption Activity in Ceramic Hollow Fiber Membrane

et al. 2020

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“…It should be noted that a large number of constituents often involved in processing results in difficulties to identify the effects of each component on the final properties of the membrane. In more recent research, fewer additives are employed, and the use of kaolin raw materials solely with organic pore formers has emerged as a promising approach [33,34,35,36].…”

Section: Methodsmentioning

confidence: 99%

“…However, the comparison of the mechanical strength of different membranes fabricated using kaolin, with or without additives, is rendered complex owing to the diversity of mechanical testing methods and sample geometries. For example, in many papers, three-point bending test is used [10,17,22,28,43], while in some cases, compression [21,33], biaxial flexural strength [26], and diametral compression tests are used [18,23,42]. It should be noted that, in general, while a three-point bending test is more appropriate for facilitating comparative analysis, mechanical stability tests should be designed according to the membrane shape (configuration).…”

Section: Methodsmentioning

confidence: 99%

Materials and Applications for Low-Cost Ceramic Membranes

2019

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In water treatment applications, the use of ceramic membranes is associated with numerous advantages relative to polymer-based filtration systems. High-temperature stability, fouling resistance, and low maintenance requirements contribute to lower lifecycle costs in such systems. However, the high production costs of most commercially available ceramic membranes, stemming from raw materials and processing, are uneconomical for such systems in most water treatment applications. For this reason, there is a growing demand for new ceramic membranes based on low-cost raw materials and processes. The use of unrefined mineral feedstocks, clays, cement, sands, and ash as the basis for the fabrication of ceramic membranes offers a promising pathway towards the obtainment of effective filtration systems that can be economically implemented in large volumes. The design of effective ceramic filtration membranes based on low-cost raw materials and energy-efficient processes requires a balance of pore structure, mass flow, and robustness, all of which are highly dependent on the composition of materials used, the inclusion of various pore-forming and binding additives, and the thermal treatments to which membranes are subjected. In this review, we present recent developments in materials and processes for the fabrication of low-cost membranes from unrefined raw materials, including clays, zeolites, apatite, waste products, including fly ash and rice husk ash, and cement. We examine multiple aspects of materials design and address the challenges relating to their further development.

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“…Besides participating in phase formations, those additives also participate in pore formation. The organic pore former additives with kaolin for membrane fabrication have been studied recently [45][46][47][48]. Composite hollow fiber membranes with asymmetric pore size distributions were fabricated using kaolin as starting raw material.…”

Section: Kaolinmentioning

confidence: 99%

Ceramic Membranes for Citrus Fruit Juice Clarification: A Systematic Review

et al. 2023

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Membrane separation processes are becoming a significant part of fruit juice processing industries because of their excellent selectivity, absence of thermal and chemical treatments, and energy efficiency. Specifically, the applicability of ceramic membranes in citrus fruit juice clarification is more promising as they are highly stable in a corrosive environment and have a longer lifetime. However, ceramic membranes are costlier than polymeric membranes due to the high cost of raw materials. Therefore, numerous alternative low‐cost precursors for making the ceramic membrane are being utilized. Accordingly, the current review is focused on the different low‐cost raw materials and various fabrication methods to synthesize different ceramic membranes. Further, the ceramic membrane's application in fruit juice clarification is intensely discussed. In any membrane separation process, fouling is an unavoidable constraint. In the current review, various mechanisms involved in fouling are emphasized in detail. In addition, a variety of techniques to reduce fouling are extensively deliberated. Furthermore, ceramic membranes' challenges and future perspectives for further development are also systematically highlighted.

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Preparation of macroporous membrane using natural Kaolin and Tunisian lignite as a pore-forming agent

Cited by 8 publications

References 49 publications

Influence of the Natural Zeolite Particle Size Toward the Ammonia Adsorption Activity in Ceramic Hollow Fiber Membrane

Influence of the Natural Zeolite Particle Size Toward the Ammonia Adsorption Activity in Ceramic Hollow Fiber Membrane

Materials and Applications for Low-Cost Ceramic Membranes

Ceramic Membranes for Citrus Fruit Juice Clarification: A Systematic Review

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