Crucial parameters determining efficient use of fly ashes from energy sector as raw materials for dedicated advanced applications

Rybowicz, Paweł; Vitushynska, Yana; Kowalczyk, Andrzej; Panek, Rafał; Łagosz, Artur; Michalík, Marek; Franus, Wojciech; Adamski, Andrzej

doi:10.1016/j.scp.2022.100637

Cited by 3 publications

(2 citation statements)

References 34 publications

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“…4(b) is the specific surface area of CSs@CNTs. The specific surface area of the CSs@CNTs microsphere is 6.6419 m 2 g À1 , which is about 50% higher than the specific surface area of CSs (4.1908 m 2 g À1 ), 43 and the increase in specific surface area is caused by the CNTs grown on the surface of CSs. The increase in specific surface area is caused by CNTs growing on the surface of CSs.…”

Section: Charaterization Results Of Css@cntsmentioning

confidence: 83%

Removal efficiency of Pb(ii) by coal fly ash cenospheres@carbon nanotubes

Gao

Zhang

et al. 2023

New J. Chem.

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Section: Charaterization Results Of Css@cntsmentioning

confidence: 83%

Removal efficiency of Pb(ii) by coal fly ash cenospheres@carbon nanotubes

Gao

Zhang

et al. 2023

New J. Chem.

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“…Coal ash production is currently expected to be over 600 million ton per year worldwide, with fly ash accounting for roughly 500 million ton per year, or 75-80% of total ash produced [11]. The production of zeolites from coal fly ash can be done by means of different hydrothermal activation methods [12][13][14]. The synthesis methods include direct hydrothermal, two-step hydrothermal, alkaline fusion-assisted hydrothermal, microwave-assisted methods, molten salt, solvent-free method, and ultrasonic-assisted method [15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

The influence of separately and combined bentonite and kaolinite as binders for pelletization of NaA zeolite from coal fly ash

2022

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Pelletization of zeolitic materials is required to facilitate their practical industrial and commercial applications. Zeolite-NaA was synthesized from fly ash by the fusion method and shaped into spherical granules. Bentonite, kaolinite, and a combination of bentonite with kaolinite were tested as binders with different contents from 5 to 10 wt%. The pellet formation was optimized. The physicochemical properties of binders, zeolite powder, and zeolite granular were characterized by X-ray fluorescence spectroscopy (XRF), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), nitrogen adsorption/desorption isotherm, and scanning electron microscopy (SEM) among other techniques. Deformation and breakage behavior of spherical granulates by compression was also studied. The best performance was obtained by the pellet with 10% bentonite with satisfactory mechanical strength and water resistance. The XRD and SEM results revealed NaA zeolite granular with a typical cubic shape and high crystallinity formed on the surface of bentonite. This result presents a potential use of the coal fly ash to obtain pelletized NaA zeolite following the principles of circular economy and the sustainable development goals (SDGs), particularly SDG 12.

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