Adsorption behavior and solidification mechanism of Pb(II) on synthetic C-A-S-H gels with different Ca/Si and Al/Si ratios in high alkaline conditions

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 493, P. 152344 - 152344

Published: May 17, 2024

Language: Английский

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Insights into microstructural alterations in alkali-activated materials incorporating municipal solid waste incineration fly ash

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 425, P. 136129 - 136129

Published: April 1, 2024

Language: Английский

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Performance and heavy metal leaching of porous geopolymer based on solid wastes

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 427, P. 136186 - 136186

Published: April 15, 2024

Language: Английский

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Adsorption behavior and solidification mechanism of Pb(II) on synthetic C-S-H gel with low and high Ca/Si ratios in highly alkaline environments

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(5), P. 113871 - 113871

Published: Aug. 31, 2024

Language: Английский

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Elevating thermal comfort with eco-friendly concrete roof tiles crafted from municipal solid waste

Journal of Building Engineering, Journal Year: 2024, Volume and Issue: 88, P. 109222 - 109222

Published: April 2, 2024

Language: Английский

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Preparation of Geopolymeric Materials from Industrial Kaolins, with Variable Kaolinite Content and Alkali Silicates Precursors

Materials, Journal Year: 2024, Volume and Issue: 17(8), P. 1839 - 1839

Published: April 16, 2024

In the present work, development of geopolymeric materials with Na or K based on industrial kaolin samples, variable kaolinite content and alkaline silicates, is studied. XRF, XRD, FTIR SEM-EDS have been used as characterization techniques. Three ceramic two from Algeria one Charente (France), considered. particular, chemical mineralogical revealed elements distinct Si Al, pure secondary minerals. Metakaolinite was obtained by grinding sieving raw at 80 μm then thermal activation 750 °C for 1 h. This metakaolinite has a base material to obtain geopolymers, using this purpose different formulations silicates NaOH KOH Si/K molar ratios. The formation hydroxylation polycondensation characterized Si/Al ratios, depending original content, demonstrated. Sodium carbonates detected XRD FTIR, confirmed SEM-EDS, in these geopolymer being products carbonation.

Language: Английский

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Geopolymer armor-reinforced composite membranes for efficient oil–water separation and dye degradation

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160876 - 160876

Published: Feb. 1, 2025

Language: Английский

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Study on Mechanical Properties and Hydration Characteristics of Bauxite-GGBFS Alkali-Activated Materials, Based on Composite Alkali Activator and Response Surface Method

Materials, Journal Year: 2025, Volume and Issue: 18(7), P. 1466 - 1466

Published: March 26, 2025

To address the limitations in determining amount of activator and optimizing mix proportion during preparation bauxite tailings (BX)-based alkali-activated materials (AAMs), as well insufficient research on interactions multiple factors, this study aims to synthesize optimize composite cementitious with BX granulated blast furnace slag (GGBFS) precursors via response surface methodology central design (RSM-CCD). The optimal alkali content for alkali-activated, tailing, powder were investigated. A series tests, including XRD, FTIR, TG-DSC, SEM-EDS, used analysis further investigate effects dosage mechanical properties influence hydration products microstructure. results show that composition tailings-based material is 35% content, 4% a water glass modulus 1.3, water-solid ratio 0.32. relationship model between parameters compressive strength fits well, determination coefficients 0.9803 f3c 0.9789 f28c. identified mainly C-S-H C-(N)-A-S-H gels form SiQ3 SiQ4 tetrahedra. SEM-EDS incorporation changes silicon-aluminum system, promoting an increase increasing complexity density structure. GGBFS also has micro-aggregate filling effect nucleation effect, which improve distribution products. This demonstrates significant potential materials, contributes sustainable development construction industry.

Language: Английский

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Effect of Na+ and Ca2+ treatment concentrations on natural zeolite for lead adsorption behavior and solidification mechanism in highly alkaline environments

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 503, P. 158434 - 158434

Published: Dec. 9, 2024

Language: Английский

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Review of solid waste-based geopolymers: Preparation, deterioration and durability

Materials Today Communications, Journal Year: 2025, Volume and Issue: unknown, P. 111820 - 111820

Published: Feb. 1, 2025

Language: Английский

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