Enhancement of heavy metals recovery from aqueous solutions by cementation on a rotating cylinder using a stationary wiper

Ahmed, Maha S.; Zewail, T.M.; El-Ashtoukhy, E-S.Z.; Farag, H.A.; Azab, Islam H. El; Albatati, Faisal; El-Shazly, A.H.; Zoromba, M. Sh.; Abdel‐Aziz, M.H.

doi:10.1016/j.jiec.2021.03.001

Cited by 16 publications

(4 citation statements)

References 29 publications

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“…The intermolecular interference between [ThiPy-3,8-Dc] TF chains may account for the strong peaks at 2θ at 19.3°, 26.3°, 27.7°, and 29.1°. Reflection of the triclinic symmetry in the space group corresponds to P-1 38 . According to database code amcsd 0001,845, d-spacing and miller index ( hkl ) corresponds to the actual value of 2θ 39 .…”

Section: Resultsmentioning

confidence: 99%

“…Soft molecules are referred to as reactive molecules since they can provide electrons to an acceptor. The electrophilicity (ω) of a device is critical because it contributes to the device’s energy stability by absorbing external electrical charges 38 , 55 . Electronegativity (χ = − μ), global hardness (η = (E H –E L )⁄2), chemical potential (μ = (E H + E L )⁄2), softness (σ = 1⁄η), global electrophilicity index (ω = μ 2 ⁄2η), global softness (S = 1⁄2η), and maximum amount of electronic charge ( = (− μ)⁄η) are presented in Table 3 .…”

Section: Resultsmentioning

confidence: 99%

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Combined experimental and TD-DFT/DMOl3 investigations, optical properties, and photoluminescence behavior of a thiazolopyrimidine derivative

Abozeed

Younis

Al‐Hossainy

et al. 2022

Sci Rep

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We present here the FT-IR, DFT computation, XRD, optical, and photophysical characterization of a heterocyclic compound with thienopyrimidine and pyran moieties. TD-DFT/DMOl3 and TD-DFT/CASTEP computations were used to study the geometry of isolated and dimer molecules and their optical behavior. The indirect (3.93 eV) and direct (3.29 eV) optical energy bandgaps, HOMO–LUMO energy gap (3.02 eV), and wavelength of maximum absorption (353 nm) were determined in the gas phase with M062X/6-31+G (d, p). A thin film of the studied molecule was studied using XRD, FT-IR, and UV–Vis spectroscopy. The average crystallite size was found as 74.95 nm. Also, the photoluminescence spectroscopy revealed that the compound exhibited different emission bands at the visible range with different intensities depending on the degree of molecular aggregation. For instance, solutions with different concentrations emitted blue, cyan, and green light. On the other hand, the solid-state material produced a dual emission with comparable intensities at λmax = 455, 505, and 621 nm to cover the entire visible range and produce white emission from a single material with CIE coordinates of (0.34, 0.32) that are very similar to the ideal pure white light. Consequently, these findings could lead to the development of more attractive new luminous materials.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Combined experimental and TD-DFT/DMOl3 investigations, optical properties, and photoluminescence behavior of a thiazolopyrimidine derivative

Abozeed

Younis

Al‐Hossainy

et al. 2022

Sci Rep

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“…The most intriguing descriptor is the quanti ed compounds index electrophilicity (ω). As the device absorbs external electronic charges, it predicts energy stability [50,51].…”

Section: Discussionmentioning

confidence: 99%

Formation of bio-hybrid nanocomposite [P. oxalicum/P 2 O 5 +Ca 3 (PO 4 ) 2 ] BHC by Penicillium oxalicum and its application on the growth of canola

Shalaby¹,

Attia

Mahmoud

et al. 2022

Preprint

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The novel synthesis of biohybrid nanocomposite [P. oxalicum/P2O5 + Ca3(PO4)2]BHC by Penicillium oxalicum in presence of tricalcium phosphate and phosphorus pentoxide for phosphate rocks. Phosphorus elemental solubilization from insoluble rock phosphate by utilizing microorganisms is a promising approach for lowering production costs and increasing environmental sustainability. P. oxalicum was isolated and identified in NRC, Cairo, Egypt, and proved its ability of P highest phosphate solubilization potential by estimating clear zone and solubilization index in Pikovskaya’s agar medium and available P and phosphatase enzyme in broth media. The highest dry shoot is the inoculation treatment P. oxalicum + Extract (52.59 g) in presence of TCP and the highest dry root is the inoculation treatment P. oxalicum (6.72 g) in presence of RP. The highest phosphate content and uptake are extremely in the presence of rock phosphate and tricalcium phosphate. the results showed that significantly increased the total counts of PSM at all sources of mineral phosphate fertilizer and PSF count is increased in presence of RP and TCP more than SSP compared with control. The biohybrid nanocomposite showed an absorbance of 0.26 and 2.23 at the wavelength (λ) 378 nm and 465 nm. Also, significant changes in the absorption index and indirect/direct bandgap of the biohybrid nanocomposite have been detected. To perform frequency calculations for crystal models and isolated molecules and optimize the molecular structure, the materials Studio 7.0 program using TDDFT/DMol3 and CASTEP methodologies were utilized. The DFT-Gaussian09W-vibration values are quite similar to the experimental data either in the structure or in the optical properties.

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“…Over the past few years, several techniques have been described for removing heavy metal ions wastewater, among them chemical precipitation [6], cementation [7], coagulationflocculation [8], adsorption [9][10][11][12], electrochemical processes [13,14], and photocatalytic methods [15].…”

Section: Introductionmentioning

confidence: 99%

Feasibility of Adsorption Kinetic Models to Study Carrier-Mediated Transport of Heavy Metal Ions in Emulsion Liquid Membranes

et al. 2022

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Emulsion liquid membranes have been successfully used for the removal of different types of organic and inorganic pollutants by means of carrier-mediated transport mechanisms. However, the models that describe the kinetics and transport of such mechanisms are very complex due to the high number of model parameters. Starting from an analysis of the similarity between the elemental mechanisms of carrier-mediated transport in liquid membranes and of transport in adsorption processes, this paper presents an experimental analysis of the possibility of applying kinetic and mechanistic models developed for adsorption to carrier-mediated transport in emulsion liquid membranes. We study the removal of a target species, in this case, Cu(II), by emulsion liquid membranes containing membrane phase solutions of benzoylacetone (carrier agent), Span 80 (emulsifying agent) and kerosene (diluent), and hydrochloric acid as a stripping agent in the product phase. The experimental results fit the pseudo-second-order adsorption kinetic model, showing good relationships between the experimental and model parameters. Although both Cu(II) diffusion through the feed/membrane interface boundary layer and complex Cu-benzoylacetone diffusion through the membrane phase controls Cu(II) transport, it is the former step that mainly controls the transport process.

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Enhancement of heavy metals recovery from aqueous solutions by cementation on a rotating cylinder using a stationary wiper

Cited by 16 publications

References 29 publications

Combined experimental and TD-DFT/DMOl3 investigations, optical properties, and photoluminescence behavior of a thiazolopyrimidine derivative

Combined experimental and TD-DFT/DMOl3 investigations, optical properties, and photoluminescence behavior of a thiazolopyrimidine derivative

Formation of bio-hybrid nanocomposite [P. oxalicum/P 2 O 5 +Ca 3 (PO 4 ) 2 ] BHC by Penicillium oxalicum and its application on the growth of canola

Feasibility of Adsorption Kinetic Models to Study Carrier-Mediated Transport of Heavy Metal Ions in Emulsion Liquid Membranes

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