Ananalytical Study of Marble Consolidation by Oxalate Precipitation Using Density, Ftir and Powder-XRD Measurements

Terzu, R.; Baraj, E.; Förester, C.; Kropf, H.; Xhaxhiu, Kledi; Come, M.

doi:10.7251/jepmen1608021t

Cited by 6 publications

(2 citation statements)

References 6 publications

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“…After treatment, the porosity of the bone samples was reduced (Figure 9), while its density increased (Figure 10), confirming that the open pores and cracks of the bone samples were filled and the bone samples became denser. Generally, reduced porosity and increased density as a result of the reinforcement has been proven by many studies [31][32][33]. Surface hardness is adopted in the strength evaluation because of the inhomogeneity of the bone samples [34].…”

Section: Resultsmentioning

confidence: 99%

Consolidation of Fragile Oracle Bones Using Nano Calcium Sulfate Hemihydrate as a Protectant

Liu

et al. 2022

Coatings

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Herein, a nano calcium sulfate hemihydrate suspension in an alcohol solvent was prepared and explored as a novel protectant for fragile oracle bones. The consolidation method involved first introducing the suspension and then adding water into the bones. Through this method, cohesive calcium sulfate dihydrate formed in the bones and can act as a reinforcing material. The protective effect was studied by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FTIR), X-ray diffractometry (XRD), hardness, porosity, and color difference determination. The results showed that such consolidation increased the strength of the bone samples significantly, and only slightly changed the appearance and porosity of the bone samples, indicating a good prospect for applying nano calcium sulfate hemihydrate in the conservation of indoor fragile bone relics.

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Section: Resultsmentioning

confidence: 99%

Consolidation of Fragile Oracle Bones Using Nano Calcium Sulfate Hemihydrate as a Protectant

Liu

et al. 2022

Coatings

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“…1a, the peak observed at 3414.7 cm −1 is relative to OH − band (Farinella et al 2007;Haddad et al 2015). The peaks at 1425.37 and 876.45 cm −1 are attributed to carbonate (Böke et al 2004;Terziu et al 2016). The peak at 711.7 cm −1 is related to calcite, and peaks at 1103.55 and 520.26 cm −1 are attributed to PO 4 3− (Hosni et al 2008).…”

Section: Ftir and Xrd Analysismentioning

confidence: 92%

Box-Behnken approach for optimization of Cr(III) removal from a real tanning effluent using powdered marble

Boujelben

Ellouze

Aziz

et al. 2021

Int. J. Environ. Sci. Technol.

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During the tanning step, 30-40% of trivalent chromium remains in the solid and liquid wastes, generating highly polluted sewage. In this study, powdered marble was used as a low-cost adsorbent to remove trivalent chromium from a synthetic solution and a real tanning effluent. Batch adsorption experiments on powdered marble were performed. After incubation, samples were filtered and the uptake of chromium was determined. A 3-level Box-Behnken Design was used to study the combined effect of initial chromium concentration, pH values and adsorbent dose on the removal of trivalent chromium. The results showed that the maximum uptake (> 99%) was obtained at a chromium initial concentration of 0.758 g/L, pH = 5.0 and using 6% (w:v) of powdered marble. Adsorption isotherm was satisfactorily described by Langmuir model. The toxicity of the tanning effluent was examined before and after adsorption. Phytotoxicity (Lepidium sativum) assays revealed an improvement of the germination index rising from 0 to 35% before and after adsorption, respectively. Microtoxicity (Escherichia coli) assays showed a decrease in the growth inhibition percentage going from 100 to 31% following the adsorption experiment using raw tanning effluent. Desorption study indicated that nearly 45% of the adsorbed trivalent chromium was recovered using 4% (v:v) HCl. Overall, results showed that powdered marble is an effective and an economical alternative with great potential for trivalent chromium recovery.

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Assessing the Swelling and Permeability Behavior of Novel Marble Dust–Bentonite with Sand–Bentonite Mixes for Use as a Landfill Liner Material

2022

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Ananalytical Study of Marble Consolidation by Oxalate Precipitation Using Density, Ftir and Powder-XRD Measurements

Abstract: Abstract

Cited by 6 publications

References 6 publications

Consolidation of Fragile Oracle Bones Using Nano Calcium Sulfate Hemihydrate as a Protectant

Consolidation of Fragile Oracle Bones Using Nano Calcium Sulfate Hemihydrate as a Protectant

Box-Behnken approach for optimization of Cr(III) removal from a real tanning effluent using powdered marble

Assessing the Swelling and Permeability Behavior of Novel Marble Dust–Bentonite with Sand–Bentonite Mixes for Use as a Landfill Liner Material

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