Practical charts to identify the predominant clay mineral based on oxide composition of clayey soils

Sivrikaya, Osman; Uzal, Burak; Öztürk, Yunus Emre

doi:10.1016/j.clay.2016.09.035

Cited by 19 publications

(10 citation statements)

References 29 publications

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“…In accordance with the chemical composition of SiO 2 (56.58 and 53.70 wt%), Al 2 O 3 + Fe 2 O 3 , (23.39 and 25.12 wt%), and MgO + CaO + Na 2 O + K 2 O (8.51 and 8.63 wt%), the bulk and purified clay samples were located in the montmorillonite zone of the reported diagrams by Sivikaya et al [ 56 ].…”

Section: Resultssupporting

confidence: 68%

“…A recent study proposes the use of a practical chart to identify the predominant clay mineral based on oxide composition in clay soils. The average SiO 2 /Al 2 O 3 ratio for 40 montmorillonite samples evaluated was 2.85 [ 56 ]. In this study, the SiO 2 /Al 2 O 3 ratio was 3.43, which is higher than that reported by Sivrikaya et al [ 56 ].…”

Section: Resultsmentioning

confidence: 99%

“…The average SiO 2 /Al 2 O 3 ratio for 40 montmorillonite samples evaluated was 2.85 [ 56 ]. In this study, the SiO 2 /Al 2 O 3 ratio was 3.43, which is higher than that reported by Sivrikaya et al [ 56 ]. However, it is within the range found for the smectites from north of Tolima (2.70 to 3.93) [ 23 ] and three Brazilian smectites (3.14 to 4.09) [ 57 ].…”

Section: Resultsmentioning

confidence: 99%

“… ∗ : average of 40 montmorillonite samples [ 56 ]. ∗∗ : average of 32 smectite samples located in the north of Tolima [ 22 ].…”

Section: Figurementioning

confidence: 99%

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Characterization of Colombian Clay and Its Potential Use as Adsorbent

Macías-Quiroga

Giraldo-Gómez

Sanabria‐González

2018

The Scientific World Journal

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This paper presents a mineralogical and physicochemical characterization of a Colombian clay found in an area with the greatest exploitation potential of smectites and possible use as an adsorbent for the removal of chromium. The clay was characterized by using X-ray diffraction (XRD), cation exchange capacity (CEC), X-ray fluorescence (XRF), Fourier transform infrared spectroscopy (FT-IR), thermal analysis (TGA/DSC), and nitrogen adsorption at 77 K. The homoionized clay was used as an adsorbent for the removal of Cr(III) in an aqueous solution. The homoionized clay was modified with hexadecyltrimethylammonium bromide (HDTMA-Br), and the organoclay obtained was evaluated for the adsorption of Cr(VI) in aqueous solution. The XRD analysis showed that the clay from Armero-Guayabal is primarily constituted by smectite (48 wt%) followed by quartz mineral (21 wt%). The chemical analysis of bulk clay showed that the predominant oxides are SiO2 (55.81 wt%), Al2O3 (16.25 wt%), and Fe2O3 (7.51 wt%), and the nitrogen adsorption indicated that the bulk clay has a specific surface area of 45.1 m2/g. Homoionized clay and organoclay achieved Cr(III) and Cr(VI) removals greater than 85.05 ± 2.04% (pH between 3 and 4) and 82.93 ± 1.03% (pH between 3 and 5), respectively, proving the potential of these materials for the removal of heavy metals in an aqueous solution.

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Section: Resultssupporting

confidence: 68%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“… ∗ : average of 40 montmorillonite samples [ 56 ]. ∗∗ : average of 32 smectite samples located in the north of Tolima [ 22 ].…”

Section: Figurementioning

confidence: 99%

See 2 more Smart Citations

Characterization of Colombian Clay and Its Potential Use as Adsorbent

Macías-Quiroga

Giraldo-Gómez

Sanabria‐González

2018

The Scientific World Journal

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“…Table 1 shows the chemical analysis of starting bentonite and Al−Fe−PILC. A recent study proposes the use of a practical chart to identify the predominant clay mineral based on oxide composition in clay soils [48]. In accordance with the chemical composition of SiO2 (56.79 wt%), Al2O3 + Fe2O3, (27.67 wt%), the sample of calcium bentonite was located in the montmorillonite zone.…”

Section: Characterization Of Materialsmentioning

confidence: 99%

Catalytic Oxidation of Tartrazine in Aqueous Solution Using a Pillared Clay with Aluminum and Iron

Gálvez-Serna

Macías-Quiroga

Giraldo-Gómez

et al. 2021

Bull. Chem. React. Eng. Catal.

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In this work, pillared bentonite with Al−Fe (Al−Fe−PILC) was synthesized and used as a heterogeneous Fenton-like catalyst in the oxidation of tartrazine azo-dye in an aqueous solution. The modification of bentonite with the Al-Fe mixed system in a concentrated medium, with ultrasound assisted intercalation was carried out, and the obtained catalyst was characterized by XRF, XRD, and N2 adsorption at 77 K. The oxidation of tartrazine with Al−Fe−PILC, using different amounts of H2O2, expressed as a multiple (1, 3, 6, and 9) of a stoichiometry amount required to completely oxidize the dye was evaluated. The reaction of catalytic wet peroxide oxidation (CWPO) of the dye with 400 mg of Al−Fe−PILC and 6 times the stoichiometric amount of H2O2 at 25 °C, reached 98.2±1.8% of decolorization, 51.9±1.9% of TOC removal and 71.5±1.8% of TN removal. Results of this study show that the oxidation of tartrazine increased with the amount of H2O2 up to a certain limit. This oxidation process can be considered as an alternative for treating wastewater containing azo-dye because the reaction takes place under mild experimental conditions (room temperature and atmospheric pressure). Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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The origin and localization of “vermiculite” along the intra‐terrane shear zones in the Bundelkhand Craton, India: Mechanism and implication

Banerjee

Maity

Sarkar³

et al. 2022

Geological Journal

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a clay mineral of economic importance, is reported for the first time from the Bundelkhand Craton. The locales of the vermiculite occurrence are mapped within the Bundelkhand granitoids at several places. The identification of the fracture system and the zones of strain localization within Bundelkhand granitoids are critical for targeting the occurrences of vermiculite. A range of studies including meso-, micro-, and sub-microscopic analyses were used to delineate the characteristic features of vermiculite along the brittle/ductile shear zones in the Bundelkhand Craton. SEM-based EDS, EPMA, and XRD analyses confirm the ubiquitous dominance of vermiculite as fracture infills and/or channel infill materials along the zones of nucleation of ductile shear zones. It is postulated here that the occurrence of vermiculite is a result of supergene alteration of biotite present in the vein material. The parent material of the fracture infills from which the veins crystallized is genetically derived from the host rock (Bundelkhand granitoid), which later healed the fractures and prompted the nucleation of ductile shear zones in the Bundelkhand Craton.

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Practical charts to identify the predominant clay mineral based on oxide composition of clayey soils

Cited by 19 publications

References 29 publications

Characterization of Colombian Clay and Its Potential Use as Adsorbent

Characterization of Colombian Clay and Its Potential Use as Adsorbent

Catalytic Oxidation of Tartrazine in Aqueous Solution Using a Pillared Clay with Aluminum and Iron

The origin and localization of “vermiculite” along the intra‐terrane shear zones in the Bundelkhand Craton, India: Mechanism and implication

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