Characterisation of clay samples from minerals–rich deposits for thermoluminescence applications

Olise, Felix S.; Ola, Solomon B.; Balogun, F.A.

doi:10.1016/j.jksus.2017.01.004

Cited by 5 publications

(2 citation statements)

References 27 publications

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“…It also contains trace amounts of goethite, microline as and albite high. Quartz is a common impurity found in clay minerals (Olise et al., 2018, Ihekweme et al, 2020. As evident from Figure 1d, the peaks of the raw kaolinite mineral remain unchanged in U-BK having higher intensities for kaolinite peaks but lower for quartz as well as the montmorillonite peaks, but the peaks are narrower in E-BK.…”

Section: A Characterization Of Raw and Modified Adsorbents 1) Results...mentioning

confidence: 99%

Enhancing adsorption capacity of a kaolinite mineral through acid activation and manual blending with a 2:1 clay

Abu,

Adegoke,

Odebunmi

et al. 2024

Nig. J. Technol. Dev.

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The efficiencies of raw and modified kaolinite mineral in removing selected heavy metal ions from their respective aqueous solutions were investigated. The mineral was modified through two different methods; i) activation with HNO3, H2SO4, H3PO4, CH3COOH and C2H2O4 acids to form NK, SK, PK, AK and OK acid activated clays respectively and ii) preparations of 3:1 and 1:1 Kaolinite: Bentonite blends to form UBK and EBK composites respectively through manual blending. The adsorbents were characterized by X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Fourier Transform Infra-Red Spectroscopy (FTIR) and Brunauer Emmett Teller (BET) analysis for surface area determination. The surface area increased in some of the modified clays from 114.9457 m2/g (RK) to 288.685 m2/g (EBK), 205.92 m2/g (UBK), 162.227 m2/g (NK), 151.335 m2/g (SK), and 115.837 m2/g (OK) but reduced to 113.872 m2/g (PK) and 112.865 m2/g (AK) after modification. Adsorption studies were subsequently conducted out to remove Pb2+, Cd2+ and Ni2+ ions from synthetic solutions. Pb2+ was found to be most removed (383.5 mg g-1 (RK), 591.13 mg g-1 (EBK), 576.61 mg g-1 (UBK), 475 mg g-1 (NK), 450 mg g-1 (SK), and 425 mg g-1 (PK), 375 mg g-1 (OK) and 375 mg g-1 (AK)) with highest removals on the composites.

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Section: A Characterization Of Raw and Modified Adsorbents 1) Results...mentioning

confidence: 99%

Enhancing adsorption capacity of a kaolinite mineral through acid activation and manual blending with a 2:1 clay

Abu,

Adegoke,

Odebunmi

et al. 2024

Nig. J. Technol. Dev.

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“…For this seeking, TL sensitivity for various materials was investigated as retrospective dosimetry such as, red sand (Hafez, Sheha, Abd-Elmageed, & Sayed, 2019), silicates contained in dust (Bortolin et al, 2010), natural barite (Sharma et al, 2015), Nigerian clay with different heating rate methods (Olise, Ola, & Balogun, 2018), touch screen glasses, electronic component of mobile phones (Discher, Bortolin, & Woda, 2016;Oks et al, 2011), and electronic porcelain insulators (Mesterházy, Osvay, Kovács, & Kelemen, 2012).…”

Section: Introductionmentioning

confidence: 99%

Retrospective dosimetry using Egyptian halite (NaCl)

Shahein

Hafez

Abdou

2019

Journal of Radiation Research and Applied Sciences

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Thermoluminescence (TL) sensitivity studied for some Egyptian halite (NaCl) samples. Three natural rock salts collected from Fayoum Governorate, Qattara Depression, and Siwa Oasis and two commercial salts (Table salt and Analytical NaCl) were studied for potential application to retrospective dosimetry. The chemical compositions of the samples were analyzed by using EDX technique. The Kinetic parameters were estimated by using peak shape method for general order. The deconvolution process for the glow curves was done using the peak fit program. The chemical analyses observe a difference in the trace impurities according to the collection area of the samples. All samples have three peaks (P1, P2, and P3) but the two peaks P2 and P3 suffered overlapping in case of table salt and Fayoum Governorate. The response curves are linear from, 10 up to 100 Gy for Table salt; Analytical salt and Siwa halite, in contrast, the dose-response curves for Qattara Depression and Fayoum halite are linear from 0.8 up to 100 Gy. The TL signal fading of the samples ranged from 21% to 34%, from the initial signal. The experimental results and the estimated kinetic parameters can be dedicating the ability to use the five investigated salt samples as a retrospective dosimetry.

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