Diagnosis of the heating effect on the electrical resistivity of Ouargla (Algeria) dunes sand using XRD patterns and FTIR spectra

Mechri, Mohammed Laïd; Chihi, Smail; Mahdadi, Naouia; Beddiaf, Samiha

doi:10.1016/j.jafrearsci.2016.10.007

Cited by 10 publications

(6 citation statements)

References 13 publications

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“…e., S1, S2, S3, S4, and S5) are shown in Fig.2. They revealed similar characteristic bands mainly in the fingerprint region, where we distinguished characteristic absorption bands of silica at 459, 692, 779, 794, 1080, 1170, and 1878 cm −1 , corresponding to symmetric stretching and bending vibration of Si-O and Si-O-Si bond(Mechri et al 2017;Kumar and Rajkumar 2020). Moreover, double absorption bands at 794 and 779 cm −1 in all the spectra confirmed the presence of α-quartz.…”

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confidence: 67%

“…Those natural materials are not being well exploited because of the lack of sufficient and rigorous studies on the mineralogy, microscopic, and systematic physicochemical characterizations of aeolian sand deposits for their potential use in several applications. Numerous studies have been carried out to valorize the abundantly available aeolian sands from Algeria (Abdelhak et al 2014;Kheloufi et al 2017;Mechri et al 2017;Mahdadi et al 2017;Beddiaf et al 2017;Hassani et al 2019). Moreover, Guettala et al (2010), Mezghiche (2011), andBrahim et al (2017) extensively studied the possibility of using dune sand powder as addition to Portland cement.…”

Section: Introductionmentioning

confidence: 99%

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A holistic approach towards characterizing the El-Oued siliceous sand (eastern Algeria) for potential industrial applications

et al. 2021

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Physicochemical, mineralogical, and thermogravimetric characterizations were carried out to assess the potential technological benefits of natural sand deposits from El-Oued district (eastern Algeria). The use of granulometric analysis, FTIR spectroscopy, X-ray fluorescence (WDXRF), X-ray diffraction (XRD), scanning electron microscope (SEM/EDX), and thermogravimetric (TGA) analysis was necessary to further highlight the main physical and chemical properties of the studied sands. The grain size distribution suggests fine-to-medium sands with a mean grain size ranged from 207 to 261 μm. However, the grain micro-texture features indicate aeolian nature of El-Oued sand, and the chemical analysis reveals that all samples contain a high ratio of silica (SiO 2 ) reaching 94% with low content of CaO, Al 2 O 3 , Fe 2 O 3 , Na 2 O, and K 2 O oxides, which reflects the siliceous nature of El-Oued sand. The mineralogy of the El-Oued sand consists mainly of α-quartz (≤ 93% SiO 2 ) with minor calcite (CaCO 3 ) and very small amounts of feldspar mineral. Furthermore, the crystallite size of Quartz in all sand samples was determined to be in the range of nanometric scale. Thermal analysis (TGA) showed that El-Oued sand was relatively stable upon 800 °C. These characteristics corroborate the interesting and promising uses of El-Oued sand in the industry and nanotechnology. KeywordsSand • Mineralogical and chemical characterization • α-Quartz • Rietveld refinement • Industrial applications

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confidence: 67%

Section: Introductionmentioning

confidence: 99%

A holistic approach towards characterizing the El-Oued siliceous sand (eastern Algeria) for potential industrial applications

et al. 2021

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“…Similarly, another study investigated dunes sand in Ouargla, Algeria. The study also demonstrated the FTIR peak identification [ 63 ]. The peaks that match are found in the following frequencies, the wideband between 1100–1250 cm -1 due to the quartz in the dunes sand and the peak at 1607 cm -1 due to gypsum.…”

Section: Resultsmentioning

confidence: 98%

“…The 1607 and 1744 cm -1 is due to carboxylic acid C = O stretch and the broad and strong band were situated at 2900–2800 cm -1 , which is attributed to the C-H aldehyde. Wide bands that are visible at 1100–1250 cm -1 are attributed to the quartz in the sand [ 63 ].…”

Section: Resultsmentioning

confidence: 99%

Date pits based nanomaterials for thermal insulation applications—Towards energy efficient buildings in Qatar

et al. 2021

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Air-conditioning systems make the most significant part of energy consumption in the residential sector. There is no denying that it is essential to produce a comfortable indoor thermal environment for residents in a building. The actual goal is to achieve thermal comfort level without putting too much cost on the ecological system by trying to conserve the amount of energy consumed. An effective way to help achieve such a goal is by incorporating thermal insulation in buildings. Thermal insulations help reduce thermal energy gained during the implementation of a desired thermal comfort level. This study aims to use an environmentally friendly nanoparticle of date pits to create thermal insulations that can be used in buildings. Different ratios of the nanoparticle of the date pits and sand composite were investigated. Fourier transform infrared spectroscopy and scanning electron microscopy were used to characterize the new materials. The material with nanoparticles of date pits and 50% by-volume epoxy provided good thermal insulation with thermal conductivity of 0.26 W⁄mK that could be used in the existing buildings. This has the potential to reduce the overall energy consumption by 4,494 kWh and thereby reduce CO2 emissions of a 570 m2 house by 1.8 tons annually. In conclusion, the future of using nanoparticles of date pits in construction is bright and promising due to their promising results.

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“…e X-ray diffractograms of the sand before and after adsorption shows almost the same appearance and reveal the existence of several characteristic peaks of quartz and calcite [25,26]. For unsaturated sand, these two elements have a codominance indicated by the major peaks corresponding to the position 2θ, 27.7°and 29.7°, respectively [27][28][29][30][31]. Whereas for saturated sand, quartz predominates over calcite with the appearance of two unidentified peaks at 2θ, 43.41°and 51.08°, which can be attributed to the effluent components of the tannery.…”

Section: X-ray Diffractionmentioning

confidence: 99%

Continuous Adsorption Modeling and Fixed Bed Column Studies: Adsorption of Tannery Wastewater Pollutants Using Beach Sand

Mouhri

Merzouki²,

Belhassan³

et al. 2020

Journal of Chemistry

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is study deals with the removal of residual pollutants from tanning wastewater by continuous adsorption mechanism, using local sand as a low-cost adsorbent. e possibility of pretreating a complex tannery effluent heavily loaded with a natural material such as sand is significant. e characterization of the adsorbent before and after continuous adsorption was performed by X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy. Column studies were also carried out to evaluate the performance of the adsorbent and the efficiency of column adsorption. e adsorption kinetic rate seems to be strongly influenced by certain parameters such as the particle size of the material used, the withdrawal rate of the influent and the height of the adsorbent bed, and optimized parameters were found to be 63 μm, 15 ml·min − 1 , and 7 cm, respectively, and the color removal has achieved maximum values which vary between 95 and 100%. e results suggest that sand can be used as an economical adsorbent for the removal of color from the wastewater of the tanning industries.

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Diagnosis of the heating effect on the electrical resistivity of Ouargla (Algeria) dunes sand using XRD patterns and FTIR spectra

Cited by 10 publications

References 13 publications

A holistic approach towards characterizing the El-Oued siliceous sand (eastern Algeria) for potential industrial applications

A holistic approach towards characterizing the El-Oued siliceous sand (eastern Algeria) for potential industrial applications

Date pits based nanomaterials for thermal insulation applications—Towards energy efficient buildings in Qatar

Continuous Adsorption Modeling and Fixed Bed Column Studies: Adsorption of Tannery Wastewater Pollutants Using Beach Sand

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