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Separations, Volume 13, Issue 1

2026 January - 40 articles

Cover Story: The distillates of a fermented mash from a 5-gallon pot still were characterized using 1H NMR spectroscopy and GC-MS. Key congeners, such as acetaldehyde, ethyl acetate, furfural, phenylethanol, and 1,1-diethoxyethane, showed expected distillation behavior across ten fractions, based on their respective pure-component boiling points. However, methanol and 1-propanol showed a fairly flat concentration profile across all ten fractions. White dog (unaged whiskey) fractions from column and combination stills were also analyzed, and the results demonstrate that the small 5-gallon still separates congeners as well as these stills. Our data show that while GC-MS and NMR do reveal similar overall trends in congener concentrations across the distillation fractions, the concentration magnitude, as determined from these techniques, can vary. View this paper
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Articles (40)

  • Article
  • Open Access
131 Views
13 Pages

The use of lecithin as an emulsifier in food supplements has increased in recent years. However, successful formation of liposomes or micelles requires an appropriate mixture of phospholipids in lecithin. To evaluate the emulsification properties of...

  • Review
  • Open Access
463 Views
44 Pages

ISO 22002-100:2025 introduces stringent and more technically explicit prerequisite programme (PRP) requirements for allergen management, food fraud mitigation, and the control of chemical and packaging-related contaminants across the food, feed, and...

  • Article
  • Open Access
156 Views
15 Pages

Sustainable and Energy-Efficient Capacitive Deionization Enabled Through Upcycled Wheat Straw Biochar via Ammonium Ferric Citrate Modification

  • Jie Lu,
  • Ping Wen,
  • Jiong Wang,
  • Pin Zhang,
  • Shengyong Liu,
  • Chunyao Qing,
  • Hongge Tao,
  • Yifeng Wu,
  • Sihan Ma and
  • Binglin Chen

Capacitive deionization (CDI) technology represents an emerging and energy-efficient solution for seawater desalination and wastewater treatment. To further enhance its sustainability and economic viability, it is very important to develop high-perfo...

  • Article
  • Open Access
215 Views
15 Pages

Bismuth Oxychloride@Graphene Oxide/Polyimide Composite Nanofiltration Membranes with Excellent Self-Cleaning Performance

  • Runlin Han,
  • Faxiang Feng,
  • Zanming Zhu,
  • Jiale Li,
  • Yiting Kou,
  • Chaowei Yan and
  • Hongbo Gu

Organic pollution poses a serious threat to global water safety, while traditional treatment technologies suffer from low efficiency, high costs, and secondary pollution issues. This study successfully develops a highly efficient separation and photo...

  • Article
  • Open Access
168 Views
12 Pages

Isolation of Neuroprotective Constituents from Dryopteris crassirhizoma Rhizomes Inhibiting Beta-Amyloid Production and BACE1 Activity

  • Hwan Bin Joo,
  • Tae Eun Park,
  • Min Sung Ko,
  • Chung Hyeon Lee,
  • Kwang Woo Hwang and
  • So-Young Park

Alzheimer’s disease (AD) is a prevalent neurodegenerative condition that progressively impairs cognitive processes, particularly learning and memory. A key pathological feature of AD involves senile plaques mainly composed of β-amyloid (A&...

  • Article
  • Open Access
326 Views
27 Pages

A Comprehensive GC-MS Approach for Monitoring Legacy and Emerging Halogenated Contaminants in Human Biomonitoring

  • Rossana Comito,
  • Nicholas Kassouf,
  • Alessandro Zappi,
  • Nicolò Interino,
  • Emanuele Porru,
  • Jessica Fiori,
  • Dora Melucci and
  • Francesco Saverio Violante

Human exposure to persistent organic pollutants such as polychlorinated biphenyls (PCB) and brominated flame retardants (BFR), including both legacy and emerging compounds, remains a concern due to their bioaccumulative nature and potential health ef...

  • Article
  • Open Access
159 Views
13 Pages

Although numerous baseline correction methods exist, most are confined to static post-elution processing and fail to meet real-time analysis requirements. To address this, we propose a real-time baseline estimation method based on the Informer time-s...

  • Article
  • Open Access
231 Views
22 Pages

This study presents an eccentric pipe separator (EPS) designed according to the shallow pool principle and Stokes’ law as a compact alternative to conventional gravitational tank separators for offshore platforms. To investigate the internal oi...

  • Article
  • Open Access
237 Views
18 Pages

Intelligent Pulsed Electrochemical Activation of NaClO2 for Sulfamethoxazole Removal from Wastewater Driven by Machine Learning

  • Naboxi Tian,
  • Congyuan Zhang,
  • Wenxiao Yang,
  • Yunfeng Shen,
  • Xinrong Wang and
  • Junzhuo Cai

Sulfamethoxazole (SMX), a widely used antibiotic, poses potential threats to ecosystems and human health due to its persistence and residues in aquatic environments. This study developed a novel intelligent water treatment system, namely Intelligent...

  • Article
  • Open Access
170 Views
13 Pages

Widely used in treating oil mist aerosols generated from metalworking processes, conventional gas–liquid coalescing filters face drawbacks such as increased energy consumption, performance limitations, and shortened service life due to high ste...

  • Article
  • Open Access
116 Views
21 Pages

Study on the Performance of Bi2O3/BiOBrγIx Adsorptive Photocatalyst for Removal of 2,4-Dichlorophenoxyacetic Acid

  • Rixiong Mo,
  • Yuanzhen Li,
  • Bo Liu,
  • Yi Yang,
  • Yaoyao Zhou,
  • Yuxi Cheng,
  • Haorong Shi and
  • Guanlong Yu

In this study, a novel Bi2O3/BiOBr0.9I0.1 (BO0.9−BBI0.1) composite photocatalyst was successfully synthesized via a single-pot solvothermal method for the efficient degradation of 2,4-dichlorophenoxyacetic acid (2,4-D) under visible light. The...

  • Article
  • Open Access
271 Views
20 Pages

Comparison of Methods for the Extraction of Saponins from Sechium spp. Genotypes and Their Spectrophotometric Quantification

  • Fátima Azucena Rasgado-Bonilla,
  • Ramón Marcos Soto-Hernández,
  • Luis Francisco Salomé-Abarca,
  • Jorge Cadena-Íñiguez,
  • Víctor A. González-Hernández,
  • Lucero del Mar Ruiz-Posadas and
  • Sara Elisa Herrera-Rodríguez

Saponins are valuable health-promoting metabolites. The genus Sechium spp. is a valuable source of such metabolites. Unfortunately, there is no established method for the extraction of saponins from the fruits of this species. Therefore, this researc...

  • Article
  • Open Access
217 Views
17 Pages

Silver-Functionalized Ionic Liquid@MCM-41 Adsorbents for C2H4/C2H6 Separation

  • Yelin Yang,
  • Zongxu Wang,
  • Dan Li,
  • Mengyu Ren,
  • Defu Chen and
  • Haifeng Dong

Ionic liquids (ILs) have attracted considerable attention for light olefin separation owing to their negligible vapor pressure, excellent thermal stability, and tunable molecular structures. However, their intrinsically high viscosity severely restri...

  • Article
  • Open Access
230 Views
15 Pages

Analysis of Distillate Fractions Collected from a Small Commercial Pot Still Using NMR and GC-MS

  • Hina Ali,
  • Mohamed A. Abdelaziz,
  • J. Andrew Jones,
  • Neil D. Danielson and
  • Michael W. Crowder

In an effort to evaluate the performance of a 5-gallon pot still in separating yeast-derived congeners during the distillation of a grain-based distiller’s beer, the distillates of a fermented mash of cracked corn, malted barley, and wheat were...

  • Article
  • Open Access
151 Views
12 Pages

Rapid Separation of Non-Sweet Glycosides from Siraitia grosvenorii by Two-Step Medium-Pressure Liquid Chromatography

  • Wanzhen Cai,
  • Xiaoling Tan,
  • Xinghua Dai,
  • Xuerong Yang,
  • Xiaohua Jiang,
  • Yulu Wei,
  • Haiying Jiang and
  • Fenglai Lu

Siraitia grosvenorii (Swingle) C. Jeffrey is widely recognized for its anti-inflammatory properties, as well as its roles in lung purification, phlegm elimination, intestinal function regulation, and anti-tumor activity. Its pharmacological activity...

  • Article
  • Open Access
217 Views
15 Pages

Grinding is an essential process in mineral processing. Hydrogen-based mineral phase transformation, used to efficiently process refractory iron ores, can alter the physical and chemical properties of the ore, affecting its grinding characteristics....

  • Review
  • Open Access
267 Views
26 Pages

Current Research on NO2 Removal from Flue Gas Using Adsorption Methods

  • Xibin Ma,
  • Yulin Tong,
  • Zhe Su,
  • Hongbin Tang,
  • Hui He,
  • Shangwen Chang,
  • Yulong Chang,
  • Bangda Wang and
  • Gaoliang Li

Nitrogen dioxide (NO2) is a major atmospheric pollutant and also a recoverable nitrogen resource, for which adsorption offers a promising technical pathway. This review systematically summarizes the recent progress in the removal of NO2 from flue gas...

  • Article
  • Open Access
312 Views
18 Pages

Chromium (Cr) is a widespread heavy metal contaminant in aquatic environments, posing serious risks to phytoplankton due to its persistence, biotoxicity, and mutagenic potential. Microalgae have emerged as promising biological agents for Cr remediati...

  • Article
  • Open Access
219 Views
20 Pages

The efficient recovery of platinum (Pt) from spent catalysts is of critical strategic importance to alleviate resource scarcity and supply chain dependencies. This study developed an ultrasonic-assisted leaching process using a H2SO4-NaCl system for...

  • Review
  • Open Access
695 Views
19 Pages

Pharmaceuticals, classified as emerging pollutants, are extensively applied in both human and veterinary medicine to treat various diseases. Their widespread application has led to their occurrence in water, soil, sediments, and living organisms. Eve...

  • Article
  • Open Access
275 Views
15 Pages

Optimization of Ultra-High-Pressure Extraction and Comparative Evaluation of Antioxidant Activity and Flavonoid Composition in Guanxiang Leaves

  • Jinyan Zhang,
  • Jiyao Kang,
  • Haoqian Yan,
  • Yang Zhang,
  • Zhenhu Guo,
  • Lihui Liu,
  • Guifeng Zhang and
  • Yu Zhang

This paper aimed to optimize the ultra-high-pressure extraction process of flavonoids from guanxiang leaves, evaluate their antioxidant capacity, and identify the flavonoids. Methods: Guanxiang leaves were used as the raw material. The extraction pro...

  • Article
  • Open Access
256 Views
16 Pages

China has abundant deep coalbed methane (CBM) resources; however, high temperature, stress, and reservoir pressure complicate the gas adsorption–desorption–diffusion–seepage processes, severely restricting the development of deep CB...

  • Review
  • Open Access
625 Views
21 Pages

Advances in Biochar-Assisted Anaerobic Digestion: Effects on Process Stability, Methanogenic Pathways, and Digestate Properties

  • Anita S. Leovac Maćerak,
  • Dragana S. Žmukić,
  • Nataša S. Duduković,
  • Nataša S. Slijepčević,
  • Aleksandra Z. Kulić Mandić,
  • Dragana D. Tomašević Pilipović and
  • Đurđa V. Kerkez

Sludge, a by-product of wastewater treatment, contains harmful components that negatively impact the environment. One of the most ecologically viable and cost-effective methods for sludge treatment is anaerobic digestion, which produces biogas and st...

  • Article
  • Open Access
364 Views
17 Pages

Polar compounds can be separated on polar stationary phases attached on the surface of silica hydride (Type C silica). Although aqueous normal phase (ANP) chromatography has been used to denote this mode of separation, there have been no detailed stu...

  • Article
  • Open Access
359 Views
19 Pages

Understanding how molecular structure governs the reactivity of organic amines with CO2 is essential for the rational design of next-generation carbon-capture solvents. In this work, three representative series of amines, including linear aliphatic,...

  • Article
  • Open Access
473 Views
18 Pages

The hydrophobic region of semaglutide makes it prone to aggregation in aqueous solution, which leads to serious interception in microfiltration. The influences of pH and low concentrations of salts (NaCl, CH3COONa, Na2SO4 and (NH4)2SO4) on the partic...

  • Article
  • Open Access
470 Views
18 Pages

A semi-empirical lumped parameter model for the extraction process of traditional Chinese medicine based on thermal equilibrium was established in this work. In this model, the effect of heat dissipation was considered. Differential equations was sol...

  • Article
  • Open Access
249 Views
13 Pages

Characterization of Impurity Profile of Dimercaptosuccinate Using High-Performance Liquid Chromatography and Mass Spectrometry

  • Jing Yao,
  • Xiaofang Lian,
  • Limin Zuo,
  • Yongsheng Gu,
  • Bingyu Yang,
  • Yechun Zhang,
  • Mingzhe Xu and
  • Xiaodan Qiu

As one of the key components in technetium-labeled radiopharmaceuticals, the quality of the dimercaptosuccinate (DMSA) plays a critical role in determining the safety and efficacy of the final drug product. However, due to its high polarity and susce...

  • Article
  • Open Access
248 Views
17 Pages

Gas–solid separation fluidized bed is an efficient coal cleaning and separation technology, and this technology has been extensively used in coal separation. The separation of the feeding coal particles in the fluidized bed is generally carried...

  • Article
  • Open Access
501 Views
19 Pages

Uncarbonized Bovine Bone/MOF Composite as a Hybrid Green Material for CO and CO2 Selective Adsorption

  • Helen Paola Toledo-Jaldin,
  • Alien Blanco-Flores,
  • Marquidia Pacheco,
  • Ricardo Valdivia-Barrientos and
  • Joel Pacheco

This work aims to adsorb CO and CO2 using a low-cost biogenic waste (bone) as a platform for the in situ growth of HKUST-1, employing two methodologies. The synthesized composite materials, BMOF2 and BMOF3, exhibited functional, textural, and structu...

  • Article
  • Open Access
247 Views
12 Pages

Intensive calcination, selection and metallurgical joint comprehensive utilization of solid waste blast furnace gas ash generated by a Chinese iron and steel plant. The main valuable elements in the gas ash are Fe, Pb, Zn, and C, with contents of 22....

  • Article
  • Open Access
562 Views
22 Pages

Valorization of Lemon, Apple, and Tangerine Peels and Onion Skins–Artificial Neural Networks Approach

  • Biljana Lončar,
  • Aleksandra Cvetanović Kljakić,
  • Jelena Arsenijević,
  • Mirjana Petronijević,
  • Sanja Panić,
  • Svetlana Đogo Mračević and
  • Slavica Ražić

This study focuses on the optimization of modern extraction techniques for selected by-product materials, including apple, lemon, and tangerine peels, and onion skins, using artificial neural network (ANN) models. The extraction methods included ultr...

  • Article
  • Open Access
412 Views
18 Pages

Industrial effluents often contain azeotropic mixtures that are difficult to separate by conventional distillation. An illustrative case is the methanol/methyl acetate/ethyl acetate (MA/ME/EA) mixture. To address these challenges, this work studies t...

  • Article
  • Open Access
482 Views
20 Pages

Traditional herbal prescriptions composed of multiple botanicals remain central to ethnopharmacological practice; however, their chemical basis and classification remain poorly understood. Non-volatile compound analyses of herbal medicines are well e...

  • Article
  • Open Access
278 Views
13 Pages

Experimental Study and Industrial Application of Rigid–Flexible Coupling Screening for Difficult-to-Screen Sticky and Moist Gold Ores

  • Ning Xu,
  • Zhihai Huang,
  • Tao Guan,
  • Xiaoning Feng,
  • Hao Guo,
  • Jingyuan Liu,
  • Xingwei Song,
  • Wei Shi and
  • Miao Pan

Screening is a critical link in the separation of gold ores. However, issues such as the agglomeration of material masses and screen aperture blinding often lead to low screening precision and poor desliming performance, severely impacting the effici...

  • Article
  • Open Access
298 Views
16 Pages

Ferrate as an environmentally friendly oxidant has been widely used in the environmental remediation and versatile functionalization of carbon-based materials. In this study, we investigated its ability to induce surface wettability of polymers and i...

  • Review
  • Open Access
439 Views
24 Pages

Chirality remains the most neglected axis of pesticide residue science. Many active ingredients are sold as racemates although their enantiomers differ in potency, persistence, transport, and toxicology; as a result, total concentration is a poor sur...

  • Article
  • Open Access
299 Views
25 Pages

Selection of SAS-Tolerant Microorganisms from Activated Sludge and Assessment of Biodegradation Potential of SARS-CoV-2 Antivirals by Pure Bacterial Cultures and Activated Sludge

  • Dora Lastovčić,
  • Martina Miloloža Nikolić,
  • Ivona Zirn,
  • Marinko Markić,
  • Tomislav Bolanča,
  • Šime Ukić and
  • Dajana Kučić Grgić

The extensive use of antiviral substances (SASs) during and after the COVID-19 pandemic has increased their release into wastewater systems, raising concerns regarding their persistence and potential ecotoxicological effects. The primary objective of...

  • Article
  • Open Access
346 Views
24 Pages

Effect of Spiral Guide Groove Structure on Flow Field and Separation Performance of Cyclone Clarifiers

  • Yulong Zhang,
  • Kaiwei Guo,
  • Qiang Liu,
  • Lanyue Jiang,
  • Anjun Li and
  • Peikun Liu

This paper addresses the problem of high fine particle content in the overflow and insufficient separation efficiency of traditional cyclone clarifiers. A cyclone clarifier with a spiral guide groove is proposed. A comparative numerical simulation an...

  • Article
  • Open Access
298 Views
17 Pages

Sustainable Luffa cylindrica Bio-Sponge Immobilized with Trichoderma koningiopsis UFPIT07 for Efficient Azo Dye Removal from Textile Effluents

  • Paulo Henrique Silva de França Dias,
  • Raphael Luiz Andrade Silva,
  • Anna Gabrielly Duarte Neves,
  • André Filipe Marinho de Andrade,
  • Kethylen Barbara Barbosa Cardoso,
  • Maria Eduarda Luiz Coelho de Miranda,
  • Daniel Charles dos Santos Macêdo,
  • Luiz Henrique Svintiskas Lino,
  • Márcia Nieves Carneiro da Cunha and
  • Romero Marcos Pedrosa Brandão Costa
  • + 4 authors

The contamination of water bodies by industrial dyes is a critical environmental challenge due to the toxicity and persistence of these compounds in aquatic ecosystems. This study evaluated the efficiency of Trichoderma koningiopsis immobilized on Lu...

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Separations - ISSN 2297-8739