Preparation, characterization and catalytic performance of mesoporous silicates derived from natural diatomite: Comparative studies

Aboelenin, Reham M.M.; Fathy, Nady A.; Farag, Hala K.; Sherief, Marwa A.

doi:10.1016/j.jwpe.2017.07.017

Cited by 14 publications

(8 citation statements)

References 24 publications

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“…These death remains have tremendous applications for industrial and agriculture purposes. Diatomaceous earth is one of the major causes of their successful existence on the globe and also act as carbon dioxide sequester on the ocean floor [ 111 ]. However, more information is needed about nutrient upwellings and the causes of their bloom degradation in their natural habitats.…”

Section: Steps For Obtaining Axenic Culturementioning

confidence: 99%

Diatoms recovery from wastewater: Overview from an ecological and economic perspective

Saxena

Tiwari

Kaushik

et al. 2021

Journal of Water Process Engineering

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Section: Steps For Obtaining Axenic Culturementioning

confidence: 99%

Diatoms recovery from wastewater: Overview from an ecological and economic perspective

Saxena

Tiwari

Kaushik

et al. 2021

Journal of Water Process Engineering

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“…XRD analysis allows for identifying the crystalline structures of a solid 25 . It is well‐known that the pristine bentonite consists mainly of montmorillonite layers, which exhibit the (001) diffraction peak at approximately 2θ = 7.2° 26 .…”

Section: Resultsmentioning

confidence: 99%

Superior adsorption of cationic dye on novel bentonite/carbon composites

Fathy

El-Khouly

Ahmed

et al. 2020

Asia-Pacific J Chem Eng

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The principal objective of this work was to modify the surface of natural bentonite for enhanced adsorption of cationic dyes. In this regard, novel bentonite/carbon composites were synthesized through two routes. Ferrocene/p‐xylene mixture was used as carbon source through (1) hydrothermal decomposition and (2) spray routes during the calcination of sodium‐bentonite (Na‐B) to deposit carbons on the surface of Na‐B. Samples were characterized using scanning electron microscopy (SEM) with energy dispersive spectroscopy, X‐ray diffraction (XRD), Fourier‐transform infrared, and N2 adsorption at −196°C. Cationic neutral red (NR) dye was used to investigate the adsorption capacity of the samples. SEM and XRD profiles showed that the first route deposited carbon with orthorhombic structures, whereas the second yielded carbons with hexagonal shapes like rods on Na‐B. The specific surface areas and the total pore volumes of the composites were considerably increased in comparison with matrix of bentonite. The products gave superior adsorption of NR dye, for example, 145 mg/g onto B‐C2 and attained good reusability of adsorbent where 90% of NR dye was removed on the third run at pH 5 and temperature of 25°C. These results affirm that the prepared composites are promising as novel adsorbents for the purification of water containing cationic dyes.

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“…Among the reinforcing fillers used in industry, a large part is reserved for synthetic silicas. 1,2 Although these fillers have interesting reinforcing characteristics, economically the manufacturing cost is estimated to be high. 1,2 Therefore, it makes sense to use natural silicas such as diatomites (diatomaceous earth or Kieselghurs).…”

Section: Introductionmentioning

confidence: 99%

“…1,2 Although these fillers have interesting reinforcing characteristics, economically the manufacturing cost is estimated to be high. 1,2 Therefore, it makes sense to use natural silicas such as diatomites (diatomaceous earth or Kieselghurs). Natural silica is both abundant in nature and ecological, 3,4 but it is less pure.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Chromatographic Media from Algerian Diatomite

Daoui-Bahar

Boutoumi

Bouhamidi

2022

Kemija U Industriji

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X-ray photoelectron spectrometry combined with FTIR spectroscopy, X-ray diffraction analysis (XRD), and scanning electron microscopy (SEM) allowed highlighting the different interactions of grafts or impregnated polymers on the mineral surface of diatomite obtained by treatment of raw diatomite under reflux with a 5 M solution of hydrochloric acid for 24 h. This acid treatment led to almost total elimination of organic impurities with a total decalcification of the diatomite, leading to its deferrization and partial dealumination, and the obtaining of a support with a homogeneous siliceous surface mainly constituted of Si−OH and Si−O−Si functional groups. The surface of the diatomite washed with HCl became totally saturated with PEG-20M and SE30 with respective impregnation rates of 5 and 2 %. However, the grafting and/or impregnation of this diatomite with octadecyltrichlorosilane (C18) and docosane (C22) led to the formation of perfectly homogeneous surfaces.

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Preparation, characterization and catalytic performance of mesoporous silicates derived from natural diatomite: Comparative studies

Cited by 14 publications

References 24 publications

Diatoms recovery from wastewater: Overview from an ecological and economic perspective

Diatoms recovery from wastewater: Overview from an ecological and economic perspective

Superior adsorption of cationic dye on novel bentonite/carbon composites

Preparation of Chromatographic Media from Algerian Diatomite

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