Micro-structured and reinforced spinel hollow fiber membranes: Influence of sintering temperature and ceramic powder composition

Bessa, Lidiane Pereira; Ferreira, Eduardo de Paulo; Magalhães, Flávia de Santana; Ferreira, Franz Berbert; Cardoso, Vicelma Luiz; Reis, Miria Hespanhol Miranda

doi:10.1016/j.ceramint.2019.08.075

Cited by 18 publications

(13 citation statements)

References 47 publications

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“…Asymmetric ceramic membranes are formed by two main distinct regions: a region with micro-channels of relative high porosity (~10 µm) and a spongy-like layer with pores of approximately 0.2 µm. The micro-channels, which are formed as organized structures, are desirable to reduce transmembrane resistance for permeation (Bessa et al, 2019;Gil et al, 2015). A recent study showed that filtration using an asymmetric hollow ceramic membrane was effective in clarifying genipap fruit extract (Terra et al, 2019).…”

Section: Membranementioning

confidence: 99%

“…The cost of ceramic membranes is still a drawback for their widespread use in filtration processes. Some studies are reported on the use of low cost mineral materials to produce ceramic membranes at relative low sintering temperatures (Arzani et al, 2018;Bessa et al, 2017Bessa et al, , 2019Ferreira et al, 2019;Jamalludin et al, 2018;Kumar et al, 2015;Xavier et al, 2019). However, the mechanical resistance of these mineral membranes is still a concern.…”

Section: Membranementioning

confidence: 99%

“…However, the mechanical resistance of these mineral membranes is still a concern. Bessa et al (2019) reported that the addition of 25 wt% of dolomite (a low-cost ceramic material) to alumina increased the mechanical resistance of pure alumina membranes in 49% due to spinel formation after sintering. The spinel membranes were successfully applied for the treatment of an oily emulsion, with oil rejection of 94.5% (Bessa et al, 2019).…”

Section: Membranementioning

confidence: 99%

See 2 more Smart Citations

Performance of asymmetric spinel hollow fiber membranes for hibiscus (Hibiscus sabdariffaL.) extract clarification: Flux modeling and extract stability

Paraíso

Santos

Bessa

et al. 2020

J. Food Process. Preserv.

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This work evaluates a filtration process with and without centrifugation through asymmetric spinel hollow membranes for clarification of hibiscus extract. The centrifugation step increased the steady state flux through the membrane in 23.4%. Complete pore blockage was the main fouling mechanism and polysaccharides, proteins and phenolic compounds were mostly responsible for fouling. After sequential membrane filtration, total soluble solids, total solids and L* color coordinate (luminosity) were reduced from 5.53 to 4.03 °Brix, 47,120 to 37,780 mg/L, and 15.69 to 22.03, respectively. Seven individual bioactive compounds were identified in both extract and permeate by ultra performance liquid chromatography-mass spectrometer. The filtrated extract showed greater stability than the feed extract after 20 storage days (reduction of 43.1% in tea cream formation). The sequential centrifugation and filtration through asymmetric spinel hollow membranes can be potentially applied to produce hibiscus ready-to-drink tea with high antioxidant content. Practical applications Membrane separation process is a filtration technique based on the permeation of solute molecules through a semipermeable membrane. The ceramic membrane is widely used for the purification and clarification of food products, but the cost of material is a disadvantage for the use of filtration processes. This work demonstrated the possibility of exploring the use of asymmetric spinel hollow membrane in clarification and increased stability of teas ready for consumption. This membrane presents composition of 25 wt% of dolomite and 75 wt% of alumina, thus presenting high stability, high permeate flows and low-cost ceramic material. This filtration technology membrane can also be combined as a pre-treatment, such as centrifugation, thus improving filtration efficiency and product stability. Finally, the new membrane used was feasible to produce a hibiscus tea ready-to-drink rich in antioxidants. How to cite this article: Paraíso CM, dos Santos SS, Pereira Bessa L, et al. Performance of asymmetric spinel hollow fiber membranes for hibiscus (Hibiscus sabdariffa L.) extract clarification: Flux modeling and extract stability.

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Section: Membranementioning

confidence: 99%

Section: Membranementioning

confidence: 99%

Section: Membranementioning

confidence: 99%

See 1 more Smart Citation

Performance of asymmetric spinel hollow fiber membranes for hibiscus (Hibiscus sabdariffaL.) extract clarification: Flux modeling and extract stability

Paraíso

Santos

Bessa

et al. 2020

J. Food Process. Preserv.

Self Cite

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“…The phase inversion method is commonly applied for producing polymeric membranes and, since the beginning of the 21 st century, this method has been modified and combined with a single sintering step in order to produce asymmetric ceramic membranes [3]. Fabrication of ceramic membranes involves the adjustment of several parameters, such as ceramic suspension and bore fluid compositions, extrusion flow rates and sintering temperatures [4]. The powder particle size also influences the membrane morphology, and materials with particle sizes smaller than 1 µm are usually used to produce ceramic membranes [5].…”

Section: Introductionmentioning

confidence: 99%

“…Kaur et al [15] produced kaolin based ceramic supports by F.S. Magalhães et al / Processing and Application of Ceramics 14 [4] (2020) 303-313 using different amounts of calcium and sodium carbonates. Hubadillah et al [13] applied the phase inversion method to produce a low cost kaolin-based ceramic hollow fibre membrane with asymmetric pore size distribution.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of kaolin hollow fibre membranes for bacteria removal

Magalhães

Ferreira

Bessa

et al. 2020

PAC

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This study examines the influence of the particle size, extrusion rate and sintering temperature on the characteristics of kaolin hollow fibre membranes. In addition, the produced membranes were applied for bacteria removal from an aqueous suspension. The milling process reduced the size of kaolin particles from 8.7 to 5.1 ?m and greatly enhanced the morphology and mechanical resistance of the produced membranes. The increase in the sintering temperature up to 1250?C caused crystallographic phase modifications in the crude kaolin, which were mainly assigned to transformations of quartz and kaolinite to mullite and cristobalite phases. The fibres sintered at 1250?C have bending strength of 145MPa, but this relatively high sintering temperature caused a substantial particle densification and drastic decrease of the membrane water permeability. The kaolin hollow fibre membranes enabled almost total removal of the Enterobacter bacteria from an aqueous suspension.

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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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Micro-structured and reinforced spinel hollow fiber membranes: Influence of sintering temperature and ceramic powder composition

Cited by 18 publications

References 47 publications

Performance of asymmetric spinel hollow fiber membranes for hibiscus (Hibiscus sabdariffaL.) extract clarification: Flux modeling and extract stability

Performance of asymmetric spinel hollow fiber membranes for hibiscus (Hibiscus sabdariffaL.) extract clarification: Flux modeling and extract stability

Fabrication of kaolin hollow fibre membranes for bacteria removal

Ceramic Membranes for Citrus Fruit Juice Clarification: A Systematic Review

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