Preparation of kaolin-based low-cost porous ceramic supports using different amounts of carbonates

Kaur, Harjot; Bulasara, Vijaya Kumar; Gupta, Raj K.

doi:10.1080/19443994.2015.1068226

Cited by 24 publications

(8 citation statements)

References 26 publications

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“…The highest porosity achieved by 15 wt.% [CaCO3]PCC causing it to generate pores to the structure of the porous ceramic as compared to 10 wt.% [CaCO3]PCC.During sintering of porous ceramic, the calcium carbonates transformed into calcium oxide and the release of carbon dioxide causing vacant leads to formation of pores. This result is also supported by Kaur, Bulasara, & Gupta[11] proved that calcium carbonates separated into carbon dioxide and calcium oxide at a high sintering temperature. Thus, formation of pores were developed due to release of carbon dioxide.…”

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confidence: 70%

Flexural Strength and Crack Propagation of Porous Clay- Precipitated Calcium Carbonates

AZMY¹

2017

Preprint

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Porous clay-precipitated calcium carbonates were prepared via polymeric sponge replication method using precipitated calcium carbonates (PCC) and red clay as raw materials. Different compositions of precipitated calcium carbonates (PCC) which is 10 wt.% and 15 wt.% with 24 hours and 48 hours milling time were sintered at 1250°C for 2 hours respectively which influenced the flexural strength and morphology of the porous ceramic. The highest flexural strength (1.843 MPa) were obtained by 10 wt.% [CaCO3]PCC milled at 24 hours related to the lowest percentage of porosity (81.00%). Mineralogical characterization of porous ceramic were determined via X-ray diffraction (XRD) shows the presence of crystalline phases such as anorthite (2CaAl2Si2O8), gehlenite (Ca2Al2SiO7) and esseneite (CaFeAlSiO6) after sintering process. The morphological analysis via stereomicroscope shows that the porosity and struts were found due to presence of precipitated calcium carbonates that act as pore forming agent. The colour of porous ceramic between 10 wt.% [CaCO3]PCC and 15 wt.% [CaCO3]PCC shows significant difference due to iron oxide contained in the red clay which contributes to the colour of the samples. Crack propagates in the intergranular type of fracture mode due to resulted porous ceramic is a brittle material.

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confidence: 70%

Flexural Strength and Crack Propagation of Porous Clay- Precipitated Calcium Carbonates

AZMY¹

2017

Preprint

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“…The removal efficiency was found to be 94.37% for an initial concentration of 10 mg/L, which is very low as compared to that followed in this study. Besides, owing to their weak mechanical strength and poor chemical stability, polymeric membranes are unfit for long-term separation applications. , In contrast, for the polymeric membrane, the CM_B composite membrane synthesized in this study using low-cost precursors demonstrates good mechanical strength and high chemical stability. Besides, it shows high removal efficiency of cerium (99.7–100%).…”

Section: Resultsmentioning

confidence: 92%

Facile Synthesis of Organic Template-Free Chabazite Zeolite-Coated Kaolin Ceramic Membrane for Continuous Separation of Cerium from Aqueous Solutions

Purnima

Goswami

Kumar

et al. 2023

ACS Appl. Eng. Mater.

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Developing an organic template-free zeolite coated on a low-cost ceramic support is essential to reduce the overall cost of the membrane for heavy metal separation. In this study, a low-cost and highly durable kaolin-supported zeolite-coated composite membrane was fabricated and tested for removal of cerium metal ions from its aqueous solution. Different strategies were followed to fabricate the composite membrane through the organic template-free hydrothermal synthesis method, such as coating the ceramic tubes solely on the interior surface, exterior surface, and both sides. The results obtained from X-ray diffraction, field emission scanning electron microscopy, and field emission transmission electron microscopy indicated that the hydrothermal synthesis route produced pure, ultrafine, and uniform particles of chabazite zeolite with a cation exchange capacity of 3.96 meq/g. The effect of coating on the membrane surface(s) was investigated by measuring the weight increment, porosity, pore size, and pure water permeability; the results revealed that the ceramic tube coated on both sides has the highest amount of zeolite loading, that is, 1.82 ± 0.18 g, along with a porosity of 30.50 ± 0.50%, a water permeability of 1.74 L/m2 h bar, and an average pore diameter of 36 nm. The average pore diameter of the composite membrane (both-side-coated tubes) obtained from BET analysis (34 nm) was in good agreement with the pore size (36 nm) estimated through the pure water permeability test. Furthermore, the performance of the composite membrane coated on both sides was evaluated toward removing cerium ions from aqueous solutions. The effect of applied pressure, pH, and concentration of the feed solution was investigated. During the cross-flow filtration tests, the permeate flux decline was not observed for all the applied pressures. More than 99.9% removal of cerium was achieved under the different conditions of feed concentration and pH. This study establishes the application of the prepared composite membrane for cerium removal from aqueous solutions.

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“…For instance, mixtures rich in carbonate powder were considered for fastcuring cement-based materials, [41] or in ceramic bodies and ceramic glazes. [42] Meanwhile, cellulose-rich MCMh was more suitable for molding and printing hard calcium/carbonate composites. [43] MCM rheological behavior is a crucial aspect to consider for its deployment.…”

Section: Physicochemical Propertiesmentioning

confidence: 99%

Direct CO₂ Capture by Alkali‐Dissolved Cellulose and Sequestration in Building Materials and Artificial Reef Structures

et al. 2023

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Current carbon capture and utilization (CCU) technologies require high energy input and costly catalysts. Here, an effective pathway is offered that addresses climate action by atmospheric CO2 sequestration. Industrially relevant highly reactive alkali cellulose solutions are used as CO2 absorption media. The latter lead to mineralized cellulose materials (MCM) at a tailorable cellulose‐to‐mineral ratio, forming organic‐inorganic viscous systems (viscosity from 102 to 107 mPa s and storage modulus from 10 to 105 Pa). CO2 absorption and conversion into calcium carbonate and associated minerals translate to maximum absorption of 6.5 gCO2 gcellulose−1, tracking inversely with cellulose loading. Cellulose lean gels are easily converted into dry powders, shown as a functional component of ceramic glazes and cementitious composites. Meanwhile, cellulose‐rich gels are moldable and extrudable, yielding stone‐like structures tested as artificial substrates for coral reef restoration. Life Cycle Assessment (LCA) suggests new CCU opportunities for building materials, as demonstrated in underwater deployment for coral reef ecosystem restoration.

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Preparation of kaolin-based low-cost porous ceramic supports using different amounts of carbonates

Cited by 24 publications

References 26 publications

Flexural Strength and Crack Propagation of Porous Clay- Precipitated Calcium Carbonates

Flexural Strength and Crack Propagation of Porous Clay- Precipitated Calcium Carbonates

Facile Synthesis of Organic Template-Free Chabazite Zeolite-Coated Kaolin Ceramic Membrane for Continuous Separation of Cerium from Aqueous Solutions

Direct CO₂ Capture by Alkali‐Dissolved Cellulose and Sequestration in Building Materials and Artificial Reef Structures

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Preparation of kaolin-based low-cost porous ceramic supports using different amounts of carbonates

Cited by 24 publications

References 26 publications

Flexural Strength and Crack Propagation of Porous Clay- Precipitated Calcium Carbonates

Flexural Strength and Crack Propagation of Porous Clay- Precipitated Calcium Carbonates

Facile Synthesis of Organic Template-Free Chabazite Zeolite-Coated Kaolin Ceramic Membrane for Continuous Separation of Cerium from Aqueous Solutions

Direct CO2 Capture by Alkali‐Dissolved Cellulose and Sequestration in Building Materials and Artificial Reef Structures

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Product

Resources

About

Direct CO₂ Capture by Alkali‐Dissolved Cellulose and Sequestration in Building Materials and Artificial Reef Structures