In-situ synthesis of zeolite X in foam geopolymer as a CO2 adsorbent

Han, Lupeng; Wang, Xiaodong; Wu, Boqiang; Zhu, Shibin; Wang, Jixiang; Zhang, Yuehong

doi:10.1016/j.jclepro.2022.133591

Cited by 26 publications

(5 citation statements)

References 46 publications

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“…For this reason, there are works considering the small addition of HCFA (about 20%) to geopolymer synthesis with other raw materials, and high compressive strength values (>40 MPa) were reported [ 68 ]. A novel approach is the concept of so-called “intelligent buildings”, where materials used in the building industry can remove CO 2 from the air [ 69 , 70 ].…”

Section: Resultsmentioning

confidence: 99%

Decarbonatization of Energy Sector by CO2 Sequestration in Waste Incineration Fly Ash and Its Utilization as Raw Material for Alkali Activation

Mokrzycki,

Baran,

Gazda-Grzywacz

et al. 2023

Materials

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In this study, municipal solid waste incineration (MSWI) fly ash was subjected to mineral carbonation with the aim of investigating CO2 sequestration in waste material. The conducted study follows the trend of searching for alternatives to natural mineral materials with the ability to sequestrate CO2. The mineral carbonation of MSWI fly ash allowed for the storage of up to 0.25 mmol CO2 g−1. Next, both carbonated and uncarbonated MSWI fly ashes were activated using an alkaline activation method by means of two different activation agents, namely potassium hydroxide and potassium silicate or sodium hydroxide and sodium silicate. Mineral carbonation caused a drop in the compressive strength of alkali-activated materials, probably due to the formation of sodium and/or potassium carbonates. The maximum compressive strength obtained was 3.93 MPa after 28 days for uncarbonated fly ash activated using 8 mol dm−3 KOH and potassium hydroxide (ratio 3:1). The relative ratio of hydroxide:silicate also influenced the mechanical properties of the materials. Both carbonated and uncarbonated fly ashes, as well as their alkali-activated derivatives, were characterized in detail by means of XRD, XRF, and FTIR. Both uncarbonated and carbonated fly ashes were subjected to TG analysis. The obtained results have proved the importance of further research in terms of high-calcium fly ash (HCFA) utilization.

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Section: Resultsmentioning

confidence: 99%

Decarbonatization of Energy Sector by CO2 Sequestration in Waste Incineration Fly Ash and Its Utilization as Raw Material for Alkali Activation

Mokrzycki,

Baran,

Gazda-Grzywacz

et al. 2023

Materials

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“…Consequently, the Cu adsorption process is governed by two primary phenomena: the ionic exchange within the Zeolite and the Van der Waals attractive forces associated with the negative charges of the Ag nanoparticles. Previous research has indicated that the typical exchange capacity of the mineral and the reactivity of Ag nanoparticles can synergistically influence the Cu 2+ adsorption process [36][37][38]. Specifically, the polarization of the Zeolite in aqueous solutions and the electrostatic interactions of Ag nanoparticles contribute to the formation of negative potentials within the metal-oxygen bonds associated with the Zeolite [39,40].…”

Section: Non-linear Adsorption Modelsmentioning

confidence: 99%

Sustainable Zeolite–Silver Nanocomposites via Green Methods for Water Contaminant Mitigation and Modeling Approaches

Ruíz-Baltazar,

Reyes-López,

Méndez-Lozano

et al. 2024

Nanomaterials

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This study explores cutting-edge and sustainable green methodologies and technologies for the synthesis of functional nanomaterials, with a specific focus on the removal of water contaminants and the application of kinetic adsorption models. Our research adopts a conscientious approach to environmental stewardship by synergistically employing eco-friendly silver nanoparticles, synthesized using Justicia spicigera extract as a biogenic reducing agent, in conjunction with Mexican zeolite to enhance contaminant remediation, particularly targeting Cu2+ ions. Structural analysis, utilizing X-ray diffraction (XRD) and high-resolution scanning and transmission electron microscopy (TEM and SEM), yields crucial insights into nanocomposite structure and morphology. Rigorous linear and non-linear kinetic models, encompassing pseudo-first order, pseudo-second order, Freundlich, and Langmuir, are employed to elucidate the kinetics and equilibrium behaviors of adsorption. The results underscore the remarkable efficiency of the Zeolite–Ag composite in Cu2+ ion removal, surpassing traditional materials and achieving an impressive adsorption rate of 98% for Cu. Furthermore, the Zeolite–Ag composite exhibits maximum adsorption times of 480 min. In the computational analysis, an initial mechanism for Cu2+ adsorption on zeolites is identified. The process involves rapid adsorption onto the surface of the Zeolite–Ag NP composite, followed by a gradual diffusion of ions into the cavities within the zeolite structure. Upon reaching equilibrium, a substantial reduction in copper ion concentration in the solution signifies successful removal. This research represents a noteworthy stride in sustainable contaminant removal, aligning with eco-friendly practices and supporting the potential integration of this technology into environmental applications. Consequently, it presents a promising solution for eco-conscious contaminant remediation, emphasizing the utilization of green methodologies and sustainable technologies in the development of functional nanomaterials.

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“…Sodalite zeolite 11),12),15),21)- 23) prepared from CFA could also be used for biodiesel production 24) . FAU-type (X and Y) zeo-lites prepared from CFA 9),13),20),25)-36) are effective for simultaneous removal of Cs ＋ , Sr 2＋ , Cd 2＋ , Co 2＋ , Cu 2＋ , Pb 2＋ , and Zn 2＋ ions from aqueous solutions 13), 29) , adsorption of acetone 25) , adsorption of CO2 9),26),28), 31) , degradation of volatile organic compounds (VOCs) such as acetone, n-hexane, toluene and 1,2-dichlorobenzene 9),26), 28) , catalytic pyrolysis of marine plastic litter 30) , and adsorption of petroleum substances 27) . Zeolite Na _ P 11),12),15),37)-42) made from CFA could be used for removal of Cs ＋ and Sr 2＋ by cation exchange 42) .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of ZSM-5 Zeolites from Quang Ninh Coal Ash Components and Activity for Catalytic Cracking of Low-density Polyethylene

NGUYEN,

KUNIEDA,

MATSUURA

et al. 2024

J. Jpn. Petrol. Inst.

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In-situ synthesis of zeolite X in foam geopolymer as a CO2 adsorbent

Cited by 26 publications

References 46 publications

Decarbonatization of Energy Sector by CO2 Sequestration in Waste Incineration Fly Ash and Its Utilization as Raw Material for Alkali Activation

Decarbonatization of Energy Sector by CO2 Sequestration in Waste Incineration Fly Ash and Its Utilization as Raw Material for Alkali Activation

Sustainable Zeolite–Silver Nanocomposites via Green Methods for Water Contaminant Mitigation and Modeling Approaches

Synthesis of ZSM-5 Zeolites from Quang Ninh Coal Ash Components and Activity for Catalytic Cracking of Low-density Polyethylene

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