Utilization of Small S-Boxes for Information Hiding

Khan, Majid; Naqvi, Syeda Iram Batool

doi:10.1201/9780429435461-18

Cited by 2 publications

(4 citation statements)

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“…The qecal value predicted using the pseudo-second-order model was extremely similar to that of the adsorption equilibrium found experimentally. This finding demonstrates that the predominant underlying mechanism of EBT adsorption on γ-AlOOH and γ-Al2O3 could be chemisorption, which therefore suggests that the ionic interaction or ion exchange between active sites and dye molecules controls the adsorption process [27] and that the adsorption rate is linearly related to the square of the amount of vacant sites [24]. These results agree with those of other authors using γ-AlOOH [1] and γ-Al2O3 [28,29].…”

Section: Effect Of Adsorbent Masssupporting

confidence: 91%

“…The identification of the band at 1136 cm −1 , which corresponds to the Al-O vibration mode, supports the formation of the γ-Al 2 O 3 phase [25]. The shoulder at 1415 cm −1 is attributed to O-H bending [24]. Similar to the spectra of γ-AlOOH, the γ-Al 2 O 3 spectra exhibit two characteristic bands at 3466 cm −1 and 1639 cm −1 , which are indicative of the presence of physically adsorbed water.…”

Section: Ftir Analysismentioning

confidence: 63%

“…The presence of the γ-Al2O3 phase is confirmed by the broad band observed between 500 cm −1 and 800 cm −1 [11], as depicted in Figure 2b. The two peaks at 560 cm −1 and 790 cm −1 are assigned to Al-O stretching [24]. The identification of the band at 1136 cm −1 , which The presence of the γ-Al 2 O 3 phase is confirmed by the broad band observed between 500 cm −1 and 800 cm −1 [11], as depicted in Figure 2b.…”

Section: Ftir Analysismentioning

confidence: 64%

“…The identification of the band at 1136 cm −1 , which The presence of the γ-Al 2 O 3 phase is confirmed by the broad band observed between 500 cm −1 and 800 cm −1 [11], as depicted in Figure 2b. The two peaks at 560 cm −1 and 790 cm −1 are assigned to Al-O stretching [24]. The identification of the band at 1136 cm −1 , which corresponds to the Al-O vibration mode, supports the formation of the γ-Al 2 O 3 phase [25].…”

Section: Ftir Analysismentioning

confidence: 79%

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Adsorption of Eriochrome Black T on Pseudo Boehmite and Gamma Alumina Synthesized from Drinking Water Treatment Sludge: A Waste-to-Recycling Approach

Ballou,

Naja,

Bakher

et al. 2024

Recycling

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Eriochrome black T is considered as one of the anionic dyes with potential harmful effects on human health and the environment. Among other processes, adsorption can contribute to the removal of these dyes. In the present study, two adsorbent materials, pseudo-boehmite (γ-AlOOH) and gamma alumina (γ-Al2O3), were synthesized and tested in the removal of the Eriochrome black T molecule (EBT). γ-AlOOH and γ-Al2O3 were obtained by precipitation from NaAlO2 solution at pH = 7, at a temperature of 80 °C, and by the thermal transformation of γ-AlOOH at 800 °C, respectively. In order to gain insights into the structural, chemical, thermal and morphological properties of these materials, numerous analytical techniques were involved, including X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), differential thermogravimetric–thermal analysis (TGA-DTA), scanning electron microscopy with energy-dispersive spectroscopy (SEM-EDS), and specific surface area measurement using the Brunauer–Emmett–Teller (BET) method. Several adsorption parameters were studied, such as the adsorbent dose, initial concentration, pH, contact time and reaction temperature. The kinetic study showed that EBT adsorption follows the pseudo-second-order model. The Langmuir isotherm model revealed a maximum EBT adsorption capacity of 344.44 mg g−1 and 421.94 mg g−1 for γ-AlOOH and γ-Al2O3, respectively. A textural and structural analysis after adsorption highlighted the effective adsorption of the dye.

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