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Separations, Volume 10, Issue 7

2023 July - 53 articles

Cover Story: The transition towards a CO2-neutral industry is currently spurring many new developments in the conversion of CO2, or CO2-rich streams, into platform molecules such as methanol and dimethyl ether (DME). New processes give rise to new separation challenges as well as novel opportunities for the joint optimization of reactions and separations. In this context, the separation of CO2 and DME can be performed very efficiently using the newly developed concept of stripping enhanced distillation (SED). SED is a distillation process that utilizes an additional stripping component to promote separation in the column. This approach removes the need for an external stripping medium, and with minimal adaptations, the energy used for distillation is reduced by 20–30%, while product losses are minimized at the same time. View this paper
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Articles (53)

  • Article
  • Open Access
3 Citations
1,710 Views
16 Pages

Clarification of the Cardoon (Cynara cardunculus) Blanching Wastewater by Ultrafiltration—Study of Membrane Fouling and Flux Recovery after Chemical Cleaning

  • Esperanza Maria Garcia-Castello,
  • Monica Moratalla,
  • Milagro Reig,
  • Maria Isabel Iborra-Clar,
  • Alicia Iborra-Clar and
  • Antonio Diego Rodriguez-Lopez

This study focused on the clarification of real blanching wastewaters from the industrial processing of cardoon, a plant rich in polyphenols and belonging to the artichoke family (Cynara cardunculus). The aim of this study was to evaluate the perform...

  • Article
  • Open Access
3 Citations
2,199 Views
11 Pages

The enantioselective separation of synthetic cathinones via capillary electrophoresis with ultraviolet detection (CE-UV) was successfully achieved using an acidic formate buffer with the ionic liquid tetrabutylammonium chloride (TBAC) and beta-cyclod...

  • Article
  • Open Access
4 Citations
2,054 Views
15 Pages

The new scheme of the rapid preconcentration of volatile organic substances followed by the thermodesorption and gas chromatographic determination by using a flame ionization detector is proposed for the analysis of air. The scheme implies a change i...

  • Article
  • Open Access
7 Citations
3,849 Views
19 Pages

CO2 capture from air is crucial in achieving negative emissions. Based on conventional or newly developed high-enriching processes, we investigated the rough enrichment of CO2 from air via an externally heated or cooled adsorber (temperature-swing ad...

  • Article
  • Open Access
1 Citations
2,420 Views
15 Pages

Diagnostic Strategies for Brain Doping in an Animal Model via Quantitative Analysis of Neurochemicals

  • Yoeseph Cho,
  • Seongeun Jeon,
  • Yejin Lee,
  • Hana Park,
  • Yinglan Xu,
  • Mijin Jeon,
  • Sunmi Jung,
  • Minyoung Kim,
  • Ahlim Chin and
  • Junghyun Son
  • + 1 author

Brain doping is a novel form of doping that involves stimulating specific brain regions to enhance sports performance. However, to the best of our knowledge, there is currently no established provision or detection method for it. As brain stimulation...

  • Article
  • Open Access
2 Citations
3,885 Views
12 Pages

Maize (Zea mays L.), a food crop cultivated worldwide, is renowned for its nutritional and economic value. However, its quality can be significantly affected by various storage conditions, leading to changes in its nutritional composition and potenti...

  • Article
  • Open Access
1 Citations
1,772 Views
12 Pages

Sanjoin-tang (SJIT) is an ancient oriental medicine prescription listed in the Jinguiyaolue that is mainly used for the treatment of primary insomnia. This study was conducted to develop and validate an ultra-performance liquid chromatography with ta...

  • Article
  • Open Access
10 Citations
2,100 Views
21 Pages

The pitch-diameter ratio is an important design indicator affecting the separation performance of spirals. Based on the numerical simulation method, this paper systematically investigated the variation of flow hydrodynamic parameters in the spiral co...

  • Article
  • Open Access
2 Citations
3,557 Views
17 Pages

A simple and sensitive liquid chromatography–tandem mass spectrometry (LC-MS/MS) method has been developed for the simultaneous determination of atorvastatin (ATOR), ezetimibe (EZM), and their three metabolites, including o-hydroxyl atorvastati...

  • Review
  • Open Access
6 Citations
2,986 Views
21 Pages

Dissolved black carbon (DBC), the particular component of black carbon that can be dissolved in the water, which accounts for ~10% of the organic carbon cycle in the earth’s water body, is an essential member of the dissolved organic matter (DOM) poo...

  • Article
  • Open Access
4 Citations
2,438 Views
14 Pages

Phosvitin is the most phosphorylated naturally occurring protein and it is concentrated in the granular fraction of egg yolk. It has interesting antioxidant and cation chelating properties that can be used to preserve food and cosmetics, but its indu...

  • Article
  • Open Access
3 Citations
2,737 Views
11 Pages

Rapid and Simultaneous Extraction of Bisabolol and Flavonoids from Gymnosperma glutinosum and Their Potential Use as Cosmetic Ingredients

  • Mayra Beatriz Gómez-Patiño,
  • Juan Pablo Leyva Pérez,
  • Marcia Marisol Alcibar Muñoz,
  • Israel Arzate-Vázquez and
  • Daniel Arrieta-Baez

Gymnosperma glutinosum is a plant popularly known as “popote”, “tatalencho”, “tezozotla” or “pegajosa”, and it is used in traditional medicine in the region of Tehuacán, Puebla (Mexico), for the...

  • Article
  • Open Access
3 Citations
2,558 Views
15 Pages

There is an urgent need to develop new and improved oil-water separation materials with high stability and reusability for the cleanup of oily environmental pollutants. Here, fluorinated poly(ionic liquid)s were synthesized and their structure and pr...

  • Article
  • Open Access
1 Citations
1,826 Views
12 Pages

Design Strategy for Performance Enhancement of Vertical Plate Microdistillators

  • Yosuke Muranaka,
  • Taisuke Maki,
  • Kosuke Nishigaya and
  • Kazuhiro Mae

Microdevices have been actively implemented in chemical processes, such as in mixing and reactions. However, microseparation devices, excluding extraction devices, are still under development. In distillation, the use of microdevices has been expecte...

  • Article
  • Open Access
3 Citations
4,309 Views
14 Pages

The transition towards a CO2 neutral industry is currently spurring many new developments regarding processes for the conversion of CO2, or CO2-rich streams, into platform molecules such as methanol and dimethyl ether (DME). New processes give rise t...

  • Article
  • Open Access
6 Citations
2,943 Views
14 Pages

A Comparison of Quantitative Composition and Bioactivity of Oils Derived from Seven North American Varieties of Hops (Humulus lupulus L.)

  • Ágnes M. Móricz,
  • Mariola Bartoszek,
  • Justyna Polak,
  • Patrycja Marczewska,
  • Magdalena Knaś,
  • Andrea Böszörményi,
  • József Fodor,
  • Teresa Kowalska and
  • Mieczysław Sajewicz

Seven commercial hop (Humulus lupulus L.) oils originating from a selection of North American hop varieties (Amarillo, Azacca, Cascade, Centennial, Chinook, Saaz, and Ahhhroma) and six homemade hop oils hydrodistilled from the same commercial hop pel...

  • Feature Paper
  • Article
  • Open Access
3 Citations
2,476 Views
16 Pages

Removal of Indium Ions from Aqueous Solutions Using Hydroxyapatite and Its Two Modifications

  • Inga Zinicovscaia,
  • Nikita Yushin,
  • Doina Humelnicu,
  • Maria Ignat,
  • Ionel Humelnicu,
  • Dmitrii Grozdov and
  • Tatyana Vershinina

Hydroxyapatite (HAP) coupled with its two modifications HAP P123 and HAP F127 were applied for indium removal from aqueous solutions. Adsorbents’ abilities to remove indium ions were assessed in relation to pH, time of contact, indium concentra...

  • Article
  • Open Access
9 Citations
3,161 Views
13 Pages

Basic Research on Selective Extraction of Iron from Titanium Dioxide Waste Acid to Prepare Iron Phosphate Precursors

  • Xuejiao Cao,
  • Yang Chen,
  • Xinxing Liang,
  • Yibing Li,
  • Weiguang Zhang,
  • Zhenlei Cai and
  • Ting’an Zhang

In view of the current situation wherein acid resources and valuable components in titanium dioxide waste acid cannot be effectively extracted and are prone to secondary pollution, our research team proposed a new technique consisting of step extract...

  • Article
  • Open Access
3 Citations
2,558 Views
11 Pages

Lichens are composite organisms that produce a wide variety of secondary metabolites; many of the compounds have a high potential as bioactive compounds. The major limitations of using bioactive compounds from lichens is their slow growth rate and th...

  • Article
  • Open Access
5 Citations
3,293 Views
17 Pages

Fast Procedure for Removing Silver Species in Waters Using a Simple Magnetic Nanomaterial

  • Yésica Vicente-Martínez,
  • Moisés Ruiz-Mendieta,
  • Manuel Caravaca-Garratón,
  • Manuel Hernández-Córdoba and
  • Ignacio López-García

The increase in the production and use of disinfectants containing silver atoms (in both its ionic and nanomeric forms) in their formulation, due to the global pandemic situation caused by COVID-19, has increased the presence of silver species in was...

  • Article
  • Open Access
9 Citations
2,114 Views
16 Pages

Enhanced Oil Spill Remediation Using Environmentally Asymmetric Dicationic Ionic Liquids: Synthesis, Characterization, and Evaluation

  • Rima D. Alharthy,
  • C. E. El Shafiee,
  • M. I. Nessim,
  • R. I. Abdallah,
  • Y. M. Moustafa,
  • M. Wafeek,
  • D. A. Ismail,
  • M. M. H. Khalil and
  • R. A. El-Nagar

The disastrous consequences for society—economically, environmentally, and socially—caused by oil spills encouraged us to treat this problem. The target of this work is to synthesize new amphiphilic dicationic ionic liquids (Ia, Ib, and I...

  • Article
  • Open Access
9 Citations
2,572 Views
14 Pages

Anticorrosive Effects of Essential Oils Obtained from White Wormwood and Arâr Plants

  • Ghada Beniaich,
  • Mustapha Beniken,
  • Rajae Salim,
  • Nadia Arrousse,
  • Elhachmia Ech-chihbi,
  • Zakia Rais,
  • Asmae Sadiq,
  • Hiba-Allah Nafidi,
  • Yousef A. Bin Jardan and
  • Mustapha Taleb
  • + 1 author

This article is part of the contribution to the development of two medicinal plants widely used by the Moroccan population: white wormwood (Artemisia herba-alba) andArâr (Juniperus phoenicea), species belonging to the Asteraceae and Cupressacea...

  • Article
  • Open Access
11 Citations
3,705 Views
18 Pages

A Multi-Approach Study of Phytochemicals and Their Effects on Oxidative Stress and Enzymatic Activity of Essential Oil and Crude Extracts of Rosmarinus officinalis

  • Soumeya Bencharif-Betina,
  • Nadjia Benhamed,
  • Amina Benabdallah,
  • Hamdi Bendif,
  • Abderrahim Benslama,
  • Carmine Negro,
  • Gabriel Plavan,
  • Omar H. Abd-Elkader and
  • Luigi De Bellis

Rosmarinus officinalis or Rosemary is a highly valued medicinal vegetal, owing to its notable antispasmodic, anti-inflammatory, and antibacterial properties. In the current work, we aimed to identify the chemical components of the essential oil (EO)...

  • Article
  • Open Access
22 Citations
4,843 Views
17 Pages

Bacterial Endophytes from Moringa oleifera Leaves as a Promising Source for Bioactive Compounds

  • Amr H. Hashem,
  • Abdulaziz A. Al-Askar,
  • Hamada Abd Elgawad and
  • Amer M. Abdelaziz

Bacterial endophytes reside within the tissues of living plant species without causing any harm or disease to their hosts. Bacterial endophytes have produced a variety of bioactive compounds that can be used for different biomedical applications. In...

  • Article
  • Open Access
35 Citations
2,800 Views
14 Pages

A Prominent Streptomyces sp. Biomass-Based Biosorption of Zinc (II) and Lead (II) from Aqueous Solutions: Isotherm and Kinetic

  • Sheetal Kumari,
  • Nitin Kumar Agrawal,
  • Animesh Agarwal,
  • Anil Kumar,
  • Neeraj Malik,
  • Dinesh Goyal,
  • Vishnu D. Rajput,
  • Tatiana Minkina,
  • Pinki Sharma and
  • Manoj Chandra Garg

Traditional freshwater sources have been over-abstracted in the worldwide crisis of water scarcity. Effluents have extremely high amounts of Zn2+ and Pb2+, according to an investigation of wastewater samples taken from several industrial zones. Howev...

  • Article
  • Open Access
8 Citations
2,623 Views
19 Pages

Amitriptyline residue released into the aquatic ecosystem can have detrimental consequences on marine organisms and human wellbeing via consumption of polluted water. With a uniquely large surface area and abundant functionalities, graphene oxide ads...

  • Article
  • Open Access
2 Citations
4,995 Views
13 Pages

Active pharmaceutical ingredients (APIs) can be assured to be safe and effective with the help of stability-indicating procedures. An accurate comparison comprising the utilization of capillary zone electrophoresis (CZE) and ultra-performance liquid...

  • Review
  • Open Access
12 Citations
4,401 Views
18 Pages

Cork-based adsorbents have been gathering interest from the research community since the 1990s. A first review was published on this topic in 2012. Still, in the last decade, novel activated carbons and biochars, in multiple applications, have been p...

  • Article
  • Open Access
51 Citations
6,180 Views
16 Pages

Adsorption Studies of Pb(II) and Cd(II) Heavy Metal Ions from Aqueous Solutions Using a Magnetic Biochar Composite Material

  • Virendra Singh,
  • Nidhi Pant,
  • Rajat Kumar Sharma,
  • Diwakar Padalia,
  • Pankaj Singh Rawat,
  • Rabina Goswami,
  • Praveen Singh,
  • Akhilesh Kumar,
  • Prabhakar Bhandari and
  • Ahmed Mohamed Deifalla
  • + 1 author

Heavy metal toxicity in water is a serious problem that may have harmful effects on human health and the ecosystem. Lead [Pb(II)] and cadmium [Cd(II)] are two such heavy metal ions, present in water, whose severity is well-known and well-studied. In...

  • Article
  • Open Access
6 Citations
2,493 Views
16 Pages

Fractions of Methanol Extracts from the Resurrection Plant Haberlea rhodopensis Have Anti-Breast Cancer Effects in Model Cell Systems

  • Diana Zasheva,
  • Petko Mladenov,
  • Krasimir Rusanov,
  • Svetlana Simova,
  • Silvina Zapryanova,
  • Lyudmila Simova-Stoilova,
  • Daniela Moyankova and
  • Dimitar Djilianov

Breast cancer is among the most problematic diseases and a leading cause of death in women. The methods of therapy widely used, so far, are often with many side effects, seriously hampering patients’ quality of life. To overcome these constrain...

  • Article
  • Open Access
3 Citations
2,650 Views
13 Pages

A novel method utilizing non-aqueous capillary electrophoresis (NACE) with indirect ultraviolet detection (IUD) has been developed for the analysis of five quaternary ammonium compounds (QACs). The QACs analyzed in this study include dodecyl trimethy...

  • Article
  • Open Access
9 Citations
2,758 Views
23 Pages

Optimization and Kinetic Study of Treating Dye-Contaminated Wastewater Using Bio-Composite Synthesized from Natural Waste

  • Mana Iqbal,
  • Muhammad Asif Hanif,
  • Umer Rashid,
  • Muhammad Idrees Jilani,
  • Fahad A. Alharthi and
  • Elham Ahmed Kazerooni

The main objective of the present research project was to investigate the possibility of using low cost, eco-friendly, and easily available adsorbents, such as mint biomass and marble stone waste, for the removal of dyes, DRIM blue HS-RL and DRIM bla...

  • Article
  • Open Access
2 Citations
3,176 Views
15 Pages

Possibilities for the Environmental Processing of Gold-Bearing Ores

  • Michaela Sudova,
  • Maria Kanuchova,
  • Martin Sisol,
  • Lubica Kozakova,
  • Michal Marcin and
  • Tomas Holub

This article will focus on the alkaline leaching of gold-bearing tetrahedrite concentrate in a solution containing sodium sulfide and sodium hydroxide. This selective leaching is followed by the leaching of heavy and waste metals into the solution, w...

  • Brief Report
  • Open Access
3 Citations
1,917 Views
11 Pages

α-Pinene is an intriguing monoterpene as it has been reported to undergo the self-disproportionation of enantiomers (SDE) phenomenon via gas chromatography (GC), the only compound to decisively demonstrate this. Examples of the SDE involving th...

  • Article
  • Open Access
3 Citations
3,167 Views
14 Pages

Selective Aqueous Extraction and Green Spectral Analysis of Furfural as an Aging Indicator in Power Transformer Insulating Fluid

  • Hyunjoo Park,
  • Eunyoung Kim,
  • Byeong Sub Kwak,
  • Taehyun Jun,
  • Riko Kawano and
  • Sang-Hyun Pyo

Furfural is an intermediary and aldehyde compound degraded from paper insulation, which is used with liquid fluid in power transformers. It can be utilized as an important indicator to evaluate the degradation degree of the paper insulation and the c...

  • Article
  • Open Access
4 Citations
4,453 Views
11 Pages

Purification of High-Purity Tin via Vertical Zone Refining

  • Jiajun Wen,
  • Meizhen Wu,
  • Jubo Peng and
  • Hongxing Zheng

The present investigation delves into the potential of vertical zone refining as an effective purification technique for achieving high-purity tin (Sn) metal. The utilization of vertical zone refining offers distinct advantages over traditional horiz...

  • Article
  • Open Access
3 Citations
2,010 Views
12 Pages

A Validated UPLC-MS/MS Method for Rapid Quantification of Umifenovir in Plasma Samples and Its Greenness Assessment

  • Muzaffar Iqbal,
  • Faisal Imam,
  • Essam A. Ali,
  • Mohd Abul Kalam,
  • Sulaiman S. Alhudaithi and
  • Md. Khalid Anwer

Umifenovir is one of the most often prescribed antiviral medications for the prevention and treatment of COVID-19 and other viral infections. Herein, a UPLC-MS/MS method is developed through using ibrutinib as an internal standard (IS) for quantifyin...

  • Article
  • Open Access
4 Citations
3,544 Views
15 Pages

A Facile and Green Synthesis of Hydrophobic Polydimethylsiloxane Foam for Benzene, Toluene, and Xylene Removal

  • Lila Alatawi,
  • Abdul Halim Abdullah,
  • Siti Nurul Ain Md. Jamil and
  • Robiah Yunus

Due to its excellent properties, polydimethylsiloxane (PDMS) foam has recently attracted significant academic and industrial attention. In this study, a facile and green method was developed for PDMS foam synthesis. The PDMS foam was prepared by usin...

  • Article
  • Open Access
11 Citations
5,653 Views
13 Pages

Preparation of Iron Oxalate from Iron Ore and Its Application in Photocatalytic Rhodamine B Degradation

  • Chitiphon Chuaicham,
  • Sulakshana Shenoy,
  • Jirawat Trakulmututa,
  • Vellaichamy Balakumar,
  • Phatchada Santawaja,
  • Shinji Kudo,
  • Karthikeyan Sekar and
  • Keiko Sasaki

In this study, iron oxalate dihydrate (FOD-ore) was produced from iron ore by the process using oxalic acid to extract iron, followed by photo-reduction. Several techniques, such as X-ray powder diffraction (XRD), Raman, scanning electron microscopy...

  • Article
  • Open Access
11 Citations
4,721 Views
14 Pages

Optimization of Gallic Acid-Rich Extract from Mango (Mangifera indica) Seed Kernels through Ultrasound-Assisted Extraction

  • Zafar Hayat,
  • Tuba Riaz,
  • Kinza Saleem,
  • Kashif Akram,
  • Hafeez Ur Rehman and
  • Muhammad Azam

Different types of agro-waste provide potential substrates for the extraction of bioactive compounds. Mango waste (e.g., peels and seeds) is one such example and may serve as a source of gallic acid, a well-known bioactive compound classified as a se...

  • Article
  • Open Access
2 Citations
2,060 Views
14 Pages

Disodium carboxymethyl trithiocarbonate (DCMT) is considered to have the potential to replace sulfide and cyanide as a new chalcopyrite inhibitor. However, the effect of its application in the industrial field is often not ideal, mainly because the f...

  • Article
  • Open Access
4 Citations
3,025 Views
12 Pages

Clean and Efficient Recovery of Lithium from Al-Li Alloys via Vacuum Fractional Condensation

  • Lei Shi,
  • Zou Peng,
  • Ping Ning,
  • Xin Sun,
  • Kai Li,
  • Huan Zhang and
  • Tao Qu

Al-Li alloys are ideal structural materials for the aerospace industry. However, an increasing number of Al-Li alloys have reached the end of their service life and must be recycled. Unfortunately, when vacuum distillation is used to separate Al-Li a...

  • Article
  • Open Access
22 Citations
6,908 Views
20 Pages

Identification of Bioactive Compounds in Plant Extracts of Greek Flora and Their Antimicrobial and Antioxidant Activity

  • Aliki Tsakni,
  • Archontoula Chatzilazarou,
  • Efstathia Tsakali,
  • Andreas G. Tsantes,
  • Jan Van Impe and
  • Dimitra Houhoula

This study examined five species of the Lamiaceae family, Origanum vulgare L., Origanum dictamnus L., Origanum majorana L., Mentha spicata L. and Lavandula angustifolia L., and one species of the Hypericaceae family, Hypericum perforatum L., for thei...

  • Article
  • Open Access
19 Citations
7,675 Views
20 Pages

Sidr Honeys Physical and Chemical Characterization, a Comprehensive Approach through LC-MS/MS, NMR, and GC-MS Analysis

  • Aida A. Abd El-Wahed,
  • Eman H. Rashwan,
  • Mohamed F. AlAjmi,
  • Shaden A. M. Khalifa,
  • Aamer Saeed,
  • Chao Zhao,
  • Yahya Al Naggar,
  • Zhiming Guo,
  • Syed G. Musharraf and
  • Nermeen Yosri
  • + 2 authors

Honey intake is advantageous to human health due to its antioxidant, anticancer, anti-inflammatory, and antimicrobial properties, all of which are attributed to the rich bioactive compound contents. Moreover, hepatoprotective, wound healing, and gast...

  • Article
  • Open Access
5 Citations
2,476 Views
23 Pages

Since Yarrowia lipolytica, an oily yeast, contains many valuable products as biomass, to increase its widespread use, it is very important to develop a sustainable production model. In this study, the production of high acid hydrolysate from sawdust...

  • Article
  • Open Access
8 Citations
2,962 Views
15 Pages

In this work, a novel silane coupled cationic precursor (SAGS) was synthesized by 3-glycidyloxypropyltrimethoxysilane and sodium 2-((2-aminorthyl)amino) ethanesulfonate. A series of cation exchange membranes were prepared with poly(vinyl alcohol) (PV...

  • Article
  • Open Access
8 Citations
2,819 Views
13 Pages

Rhaphiolepis indica Fruit Extracts for Control Fusarium solani and Rhizoctonia solani, the Causal Agents of Bean Root Rot

  • Ahmed A. Heflish,
  • Said I. Behiry,
  • Abdulaziz A. Al-Askar,
  • Yiming Su,
  • Ahmed Abdelkhalek and
  • Mohamed K. Gaber

Numerous strategies have been suggested to reduce dependence on synthetic products, such as physical, microbial, and natural methods. Among the natural remedies, plant extracts have emerged as a popular option owing to their eco-friendly character, e...

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Separations - ISSN 2297-8739