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Separations, Volume 10, Issue 6

June 2023 - 44 articles

Cover Story: The increasing use of electronic devices has also led to an increase in the demand for many metals, of which gallium is especially important due to its wide range of applications. For this reason, gallium has been incorporated into the critical raw materials list. In this context, it is crucial to seek alternative sources of gallium, with the Waste from Electrical and Electronic Equipment (WEEE) and Bayer liquor from the alumina process being reliable alternatives. These residues can be digested to generate aqueous streams, from which gallium can be recovered with several processes, such as adsorption. Adsorption does not allow a direct recovery of gallium, but it allows its preconcentration so that further recovery treatments are economically feasible. In this study, we compare two potential candidate adsorbents for gallium recovery. View this paper
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Articles (44)

  • Article
  • Open Access
8 Citations
3,466 Views
12 Pages
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Improved Palladium Extraction from Spent Catalyst Using Ultrasound-Assisted Leaching and Sulfuric Acid–Sodium Chloride System

  • Jinjiao Wang,
  • Xiaoping Zhu,
  • Jiale Fan,
  • Ke Xue,
  • Shengyu Ma,
  • Ruiming Zhao,
  • Hao Wu and
  • Qin Gao
Separations2023, 10(6), 355;https://doi.org/10.3390/separations10060355

13 June 2023

This paper presents a process for efficiently recovering palladium (Pd) from spent Pd/Al2O3 catalysts used for hydrogenation reactions, using ultrasound-assisted leaching (UAL). A system composed of H2SO4 and NaCl was investigated under ultrasound-en...

Full Article
  • Article
  • Open Access
11 Citations
3,830 Views
17 Pages
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Comprehensive Metabolite Fingerprinting of Australian Black and Green Olives and Their Antioxidant and Pharmacokinetics Properties

  • Akhtar Ali,
  • Farhad Ahmadi,
  • Jeremy J. Cottrell and
  • Frank R. Dunshea
Separations2023, 10(6), 354;https://doi.org/10.3390/separations10060354

13 June 2023

Polyphenols, especially flavonoids, are well-known for their bioactive antioxidant properties. Therefore, this study aimed to analyze Australian black (ripe) and green olives (unripe) for phenolic and non-phenolic metabolites, antioxidant activities,...

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  • Article
  • Open Access
2,678 Views
16 Pages
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In Vitro and Reactive Metabolites Investigation of Metabolic Profiling of Tyrosine Kinase Inhibitors Dubermatinib in HLMs by LC–MS/MS

  • Nasser S. Al-Shakliah,
  • Adnan A. Kadi,
  • Hatem A. Abuelizz and
  • Rashad Al-Salahi
Separations2023, 10(6), 353;https://doi.org/10.3390/separations10060353

13 June 2023

Dubermatinib (DMB, TP-0903), a benzenesulfonamide, is an inhibitor of the tyrosine kinase AXL, which is a member of the TAM family and can prevent GAS6-mediated activation of AXL in cancer cells. Patients with previously treated chronic lymphocytic l...

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  • Feature Paper
  • Article
  • Open Access
2 Citations
2,392 Views
21 Pages
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Synthesis and Characterization of Amorphous SiO2−FexOy Materials Starting from Iron Sulfate for Preliminary Studies of CO2 Adsorption

  • Cătălin Ianăşi,
  • Bogdan Pascu,
  • Nicoleta Nemeş and
  • Alexandru Popa
Separations2023, 10(6), 352;https://doi.org/10.3390/separations10060352

13 June 2023

The goal of this work is to investigate the effectiveness of amorphous SiO2−FexOy loaded by functionalization with Ce(SO4)2, Li2SO4, and 3-aminopropyltriethoxysilane (APTES) for CO2 adsorption. Silica and iron-based materials are gaining popula...

Full Article
  • Review
  • Open Access
8 Citations
4,910 Views
31 Pages
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Sensitivity Enhancement for Separation-Based Analytical Techniques Utilizing Solid-Phase Enrichment Approaches and Analyte Derivatization for Trace Analysis in Various Matrices

  • Hanan Farouk,
  • Hager Ebrahim,
  • Heba Sonbol,
  • Monika Malak,
  • Maha Kamal,
  • Noha Ibrahim,
  • Ahmed Shawky,
  • Walaa Zarad,
  • Ahmed Emad and
  • Samy Emara
Separations2023, 10(6), 351;https://doi.org/10.3390/separations10060351

13 June 2023

Despite the fact that strong routine separation methodologies can give reliable specificity and validity at usual working pharmaceutical concentrations, they may fail at very low concentration levels. This poses considerable challenges for researcher...

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  • Article
  • Open Access
2 Citations
2,001 Views
13 Pages
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Programmable Low-Pressure Chromatographic Sub-90 s Assay of Parabens in Cosmetics with Post-Column Chemiluminescence Detection

  • Margarita Barbatsi and
  • Anastasios Economou
Separations2023, 10(6), 350;https://doi.org/10.3390/separations10060350

11 June 2023

This work describes a new programmable low-pressure chromatography method with post-column chemiluminescence (CL) detection for the rapid and cost-effective determination of four parabens in cosmetic products. Elution of the target analytes was achie...

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  • Feature Paper
  • Article
  • Open Access
5 Citations
2,353 Views
22 Pages
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Assessment of Two Materials as Adsorbents for the Effective Removal and Further Pre-Concentration of Gallium from Aqueous Solutions: Mesoporous Carbon vs. Clinoptilolite

  • Patricia Sáez,
  • Ignacio Bernabé,
  • José Mª. Gómez,
  • Eduardo Díez,
  • Cristina Fraile,
  • Noelia García and
  • Araceli Rodríguez
Separations2023, 10(6), 349;https://doi.org/10.3390/separations10060349

9 June 2023

In this research, the adsorption of gallium onto natural zeolite (clinoptilolite) and two mesoporous-activated carbons were compared and evaluated. The clinoptilolite was treated with HCl (HCPL), while mesoporous-activated carbons (MCSG60A and MCO1)...

Full Article
  • Article
  • Open Access
14 Citations
3,424 Views
15 Pages
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Chemical Characterization, Antioxidant, Insecticidal and Anti-Cholinesterase Activity of Essential Oils Extracted from Cinnamomum verum L.

  • Ghada Beniaich,
  • Otmane Zouirech,
  • Aimad Allali,
  • Mohammed Bouslamti,
  • Imane Maliki,
  • Abdelfattah El Moussaoui,
  • Mohamed Chebaibi,
  • Hiba-Allah Nafidi,
  • Yousef A. Bin Jardan and
  • Mohammed Bourhia
  • + 1 author
Separations2023, 10(6), 348;https://doi.org/10.3390/separations10060348

9 June 2023

This study is aimed at evaluating the potential of the essential oil of Cinnamomum verum (EOCV) as an antioxidant, as an insecticide against Callosobruchus maculatus and for its anti-acetylcholinesterase activity. To this end, EOCV was extracted via...

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  • Article
  • Open Access
4 Citations
2,451 Views
18 Pages
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Chemometric Approach for Profiling of Metabolites of Potential Antioxidant Activity in Apiaceae Species Based on LC-PDA-ESI-MS/MS and FT-NIR

  • Noha H. Atta,
  • Heba Handoussa,
  • Iris Klaiber,
  • Bernd Hitzmann and
  • Rasha S. Hanafi
Separations2023, 10(6), 347;https://doi.org/10.3390/separations10060347

8 June 2023

Chemometrics is a tool for data mining and unlocking the door for solving big data queries. Apiaceae is a family species which is commonly cultivated worldwide. Although members of this species are widely used as antioxidant, antibacterial, antifunga...

Full Article
  • Article
  • Open Access
8 Citations
4,236 Views
17 Pages
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Optimization of Chromatographic Conditions with QbD for Method Development and Validation of Bosutinib by HPLC: Applications in Dosage Forms and Rat Plasma Analysis

  • Asim Najmi,
  • Zia ur Rehman,
  • Hassan Ahmed Alhazmi,
  • Mohammed Mofarreh Albratty,
  • Nasser Hassan Majrashi,
  • Khalid Mohammed Hakami,
  • Naif Ali Najmi and
  • Ammar Abdullah Mobarki
Separations2023, 10(6), 346;https://doi.org/10.3390/separations10060346

7 June 2023

Aim: Bosutinib (BST) is an anti-cancer medicine that is used to treat a variety of different types of cancer. Using the HPLC method of analysis and the Quality by Design (QbD) strategy, the study aimed to precisely quantify the drug in tablet form an...

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