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Separations publishes Special Issues to create collections of papers on specific topics, with the aim of building a community of authors and readers to discuss the latest research and develop new ideas and research directions. Special Issues are led by Guest Editors, who are experts on the topic and all Special Issue submissions follow MDPI's standard editorial process. The journal’s Editor-in-Chief and/or designated Editorial Board Member will oversee Guest Editor appointments and Special Issue proposals, checking their content for relevance and ensuring the suitability of the material for the journal. The papers published in a Special Issue will be collected and displayed on a dedicated page of the journal’s website. Further information on MDPI's Special Issue polices and Guest Editor responsibilities can be found here. For any inquiries related to a Special Issue, please contact the Editorial Office.

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Advanced Functional Materials for Wastewater Treatment and Purification

edited by Tengyao Jiang and Wei Huang

submission deadline 20 Dec 2024 | 5 articles | Viewed by 9554 | Submission Open

Keywords: wastewater treatments; heavy metals; organic contaminants; porous materials; adsorption; composites

(This special issue belongs to the Section Materials in Separation Science)

Isolation of Natural Compounds—Emphasis on Antioxidants' Purification

edited by

Aleksandar Shkondrov

submission deadline 20 Dec 2024 | 2 articles | Viewed by 2374 | Submission Open

Keywords: separation; antioxidant activity; chromatography; isolation; purification; extracts; phytochemistry; chemistry of natural compounds; extracts; biological activity; radical scavenging; pharmacognosy

(This special issue belongs to the Section Analysis of Natural Products and Pharmaceuticals)

Green and Efficient Separation and Extraction of Salt Lake Resources

edited by Xiushen Ye, Dandan Gao and Shiqiang Wang

submission deadline 20 Dec 2024 | 3 articles | Viewed by 2080 | Submission Open

Keywords: lithium; rubidium; cesium; boron; potassium; salt lake; adsorption; extraction; membrane separation; phase separation

(This special issue belongs to the Section Separation Engineering)

Removal and Recovery of Nitrogen and Phosphorus from Wastewater

edited by Qian Ping

submission deadline 31 Dec 2024 | 3 articles | Viewed by 5991 | Submission Open

Keywords: nutrient removal; resource recovery; biological wastewater treatment; chemical precipitation; electrochemistry; physical treatment; phosphorus release and recovery

(This special issue belongs to the Section Environmental Separations)

The 10th Anniversary of Separations: Advances in Separation and Analysis of Natural Products/Medicines

edited by

Xingchu Gong

, Shufang Wang and

Guanglei Zuo

submission deadline 31 Dec 2024 | 4 articles | Viewed by 3276 | Submission Open

Keywords: chromatography; separation process; natural products; medicinal plants; phytochemical analysis; bioactive compounds

(This special issue belongs to the Section Analysis of Natural Products and Pharmaceuticals)

Bioelectrochemical Treatment and Purification of Wastewater

edited by Nuan Yang and Fei Guo

submission deadline 31 Dec 2024 | 2 articles | Viewed by 2311 | Submission Open

Keywords: bioelectrochemical systems; bioelectrochemical treatment; wastewater treatment and purification; electrodes and reactor design; electricity generation; nitrogen removal; electroactive bacteria; conductive materials; biofilm formation

(This special issue belongs to the Section Purification Technology)

Extraction and Characterization of Bioactive Compounds from Plant and Natural Sources

edited by

José Manuel Romero-Márquez

and

Alfonso Varela-López

submission deadline 31 Dec 2024 | 1 articles | Viewed by 2116 | Submission Open

Keywords: extraction; characterization; bioactive compounds; natural sources; nutraceutical; plant materia

(This special issue belongs to the Section Analysis of Natural Products and Pharmaceuticals)

10th Anniversary of Separations: Recent Advances in Analysis of Food and Beverages

edited by

Javier Saurina

submission deadline 31 Dec 2024 | 1 articles | Viewed by 1181 | Submission Open

Keywords: liquid chromatography; gas chromatography; capillary electrophoresis; food analysis; food safety; spectrometry; microchip-based devices; chemometrics

(This special issue belongs to the Section Analysis of Food and Beverages)

Emerging Analytical Methods for Detection and Separation of Environmental Pollutants and Food Contaminants

edited by

Marios G. Kostakis

, Niki Maragou and

Natasa Kalogiouri

submission deadline 31 Dec 2024 | 1 articles | Viewed by 936 | Submission Open

Keywords: persisent organic pollutants; emerging contaminants; high-resolution mass spectrometry; low-resolution mass spectrometry; tandem mass spectrometry; food analysis; environmental analysis; liquid chromatography; gas chromatography; sample preparation techniques

(This special issue belongs to the Section Chromatographic Separations)

10th Anniversary of Separations: Recent Advances in Analysis of Energies

edited by

Sascha Nowak

submission deadline 31 Dec 2024 | Viewed by 332 | Submission Open

Keywords: analysis of energies; chromatography; capillary electrophoresis; mass spectrometry; sample preparation; solid-phase extraction and microextraction; separation techniques (physical and chemical)

(This special issue belongs to the Section Analysis of Energies)

The 10th Anniversary of Separations: Separation Engineering

edited by

Yundong Wang

submission deadline 31 Dec 2024 | Viewed by 158 | Submission Open

Keywords: absorption and adsorption; advanced distillation processes; bio-separation; CO2 capture; extraction; gas separation; hydrogen purification; interfacial phenomena; mass transfer; membrane separation process; process intensification; water treatment and reuse

(This special issue belongs to the Section Separation Engineering)

Analytical Pyrolysis–Gas Chromatography–Mass Spectrometry of Synthetic Polymers and Biopolymers

edited by

Peter Kusch

submission deadline 20 Jan 2025 | Viewed by 221 | Submission Open

Keywords: analytical pyrolysis– gas chromatography– mass spectrometry (Py-GC-MS); polymers/copolymers; biopolymers; pyrolysis– mass spectrometry (Py-MS); photo/thermal/oxidative degradation (UV/Py-GC/MS); EGA-GC-MS; Py-GC-TOFMS; pyrolyzers; autosamplers; Polymer-Py-GC-MS Library; micro(nano)plastics; failure analysis; structural analysis; separations; identification

(This special issue belongs to the Section Chromatographic Separations)

Novel Solvents and Methods for Extraction of Chemicals

edited by Silvia Fraterrigo Garofalo and Giuseppe Pipitone

submission deadline 20 Jan 2025 | Viewed by 151 | Submission Open

Keywords: sustainable extraction; chemical separation; innovative solvents; environmental sustainability; advanced extraction methods

(This special issue belongs to the Section Separation Engineering)

Advanced Research on Extraction and Analysis of Plant Extracts

edited by

Lina Raudonė

submission deadline 10 Feb 2025 | 5 articles | Viewed by 11934 | Submission Open

Keywords: phytochemistry; extraction; profiles; analytical markers; chromatography; plant extracts

(This special issue belongs to the Section Analysis of Natural Products and Pharmaceuticals)

Peptide Synthesis, Separation and Purification

edited by

Othman Al Musaimi

submission deadline 10 Feb 2025 | 3 articles | Viewed by 7064 | Submission Open

Keywords: hydrophobicity; retention time prediction; solubility; retention behavior; peptide separation; purification; denaturation

(This special issue belongs to the Section Chromatographic Separations)

Application of Deep Eutectic Solvents in Green Separation Chemistry

edited by Bušić Valentina and

Maja Molnar

submission deadline 10 Feb 2025 | 2 articles | Viewed by 5162 | Submission Open

Keywords: green separation process; DESs in extraction processes; chromatographic separation techniques; organic synthesis in DESs; DESs in industrial scales; molecular dynamics studies

(This special issue belongs to the Section Purification Technology)

Adsorption Process in Chemical Engineering

edited by Adrian Bonilla-Petriciolet,

Didilia Ileana Mendoza-Castillo

and Hilda Elizabeth Reynel-Ávila

submission deadline 10 Feb 2025 | 1 articles | Viewed by 2125 | Submission Open

Keywords: adsorbents; depollution; energy storage; environmental remediation; intensification; modeling; adsorption engineering; process systems engineering; sustainable separation; value-added products

Novel Methods for the Analysis of Active and Toxic Components in Food

edited by

Lorena González-Gómez

and

Sonia Morante Zarcero

submission deadline 10 Feb 2025 | 1 articles | Viewed by 1574 | Submission Open

Keywords: food analysis; toxic compounds; bioactive compounds; micro-extractive methods; chromatography; food safety and quality; mass spectrometry; sample preparation; validated analytical methods; green methodologies

(This special issue belongs to the Section Analysis of Food and Beverages)

Adsorption and Remediation of Emerging Pollutants from Water and Soil

edited by Xiaoying Guo

submission deadline 20 Feb 2025 | 4 articles | Viewed by 4642 | Submission Open

Keywords: novel adsorbents; removal of emerging pollutants; emerging pollutant detection; remediation of water and soil pollution; environmental risks of emerging pollutants

(This special issue belongs to the Section Environmental Separations)

Green Extraction Techniques of Bioactive Compounds from Natural Sources

edited by Liliana Mihalcea and

Mona Elena Popa

submission deadline 20 Feb 2025 | 1 articles | Viewed by 858 | Submission Open

Keywords: natural sources; bioactive compounds; supercritical extraction; subcritical water extraction; chromatography; spectrometry; ultrasound-assisted extraction; microwave-assisted extraction; pressurized liquid extraction; enzyme-assisted extraction; bioeconomy

(This special issue belongs to the Section Analysis of Natural Products and Pharmaceuticals)

Determination of Emerging Organic Pollutants by GC/LC-MS

edited by Bibai Du and Hui Chen

submission deadline 20 Feb 2025 | Viewed by 140 | Submission Open

Keywords: emerging pollutants; organic pollutants; analytical method; sample preparation; gas chromatography-mass spectrometry; liquid chromatography− mass spectrometry ; quantitative analysis ; qualitative analysis ; environmental matrices; air; water; soil; QA/QC

(This special issue belongs to the Section Environmental Separations)

Research Progress for Isolation of Plant Active Compounds

edited by

Huaxiang Li

and Yi Li

submission deadline 10 Mar 2025 | 5 articles | Viewed by 9653 | Submission Open

Keywords: plants; active compounds; extraction; isolation; identification; molecular structure; chromatography; mass spectrometry; nuclear magnetic resonance analysis; biological activity

(This special issue belongs to the Section Analysis of Natural Products and Pharmaceuticals)

Separation Technology for Solid Waste Treatment and Recycling

edited by Ying Huang and Kazuyuki Oshita

submission deadline 10 Mar 2025 | 1 articles | Viewed by 1451 | Submission Open

Keywords: solid waste; recycling; rare metals; crude oil; separation techniques

(This special issue belongs to the Section Separation Engineering)

Application of Advanced Materials and Technologies in the Separation and Adsorption

edited by Hao Wu

submission deadline 10 Mar 2025 | 2 articles | Viewed by 1411 | Submission Open

Keywords: advanced material; technology; separation; adsorption; pollutant treatment; efficient; low energy consumption; resource utilization

(This special issue belongs to the Section Materials in Separation Science)

Advanced Composite Materials for Gas Adsorption and Separation

edited by

Borcǎnescu Silvana

Myeongsub Kim

and Jaecheol Shin

submission deadline 10 Mar 2025 | Viewed by 671 | Submission Open

Keywords: mesoporous materials; synthesis; amination reagents; temperature influence; CO2 adsorption; separation; mass spectrometry; adsorption– desorption cycles

(This special issue belongs to the Section Materials in Separation Science)

10th Anniversary Special Issues: Membrane Separation Processes

edited by

Mohamed Khayet

and Mohamed Essalhi

submission deadline 10 Mar 2025 | Viewed by 323 | Submission Open

Keywords: membrane separation; membrane process; water production; energy production; gas separation; filtration; water treatment; membrane crystallization; brine mining; transport phenomena; simulation; optimization; machine learning

(This special issue belongs to the Section Materials in Separation Science)

Advanced Nano-polymer for Ion Adsorption and Selective Separation

edited by Redouane Haounati

submission deadline 10 Mar 2025 | Viewed by 169 | Submission Open

Keywords: nano-polymers; water purification; heavy metal ions; computational modeling; toxic pollutants

(This special issue belongs to the Section Materials in Separation Science)

Adsorption of Emerging Water Pollutants by Advanced Materials

edited by Jonathan O. Okonkwo

submission deadline 10 Mar 2025 | Viewed by 146 | Submission Open

Keywords: novel materials; adsorption; removal; toxic pollutants; environmental matrices

(This special issue belongs to the Section Environmental Separations)

Green Separation and Purification Technology

edited by

Shun Yao

submission deadline 20 Mar 2025 | 3 articles | Viewed by 2343 | Submission Open

(This special issue belongs to the Section Separation Engineering)

Membranes Used in Water Purification

edited by

Kayo Santana Barros

and

Valentín Pérez-Herranz

submission deadline 20 Mar 2025 | Viewed by 266 | Submission Open

Keywords: microfiltration; ultrafiltration; nanofiltration; reverse osmosis; forward osmosis; pressure-retarded osmosis; membrane distillation; electrodialysis; fouling; water purification

(This special issue belongs to the Section Purification Technology)

Separation Techniques for Flotation and Recycling in Mineral Processing

edited by

Chulhyun Park

and Hoseok Jeon

submission deadline 31 Mar 2025 | 1 articles | Viewed by 740 | Submission Open

Keywords: flotation; bubble size; gas dispersion property; surface chemistry; sulfide/oxide minerals; reagents; technical theory/mechanisms; process control; dynamics; separation efficiency; mineral processing; hydrometallurgy; recycling; waste

(This special issue belongs to the Section Separation Engineering)

New and Modified Polymers for Detection and Removal of Pollutants from Water and Air

edited by Aleksandra Nastasović and

Bojana Marković

submission deadline 31 Mar 2025 | Viewed by 234 | Submission Open

Keywords: polymers and composites; molecularly imprinted polymers; adsorption mechanism; thermodynamic and kinetic analysis of adsorption; quantum modeling and simulation; radionuclides; organic and inorganic pollutants; CO2 capture; gas separation

(This special issue belongs to the Section Materials in Separation Science)

Research on New Technology and Equipment of Multiphase Flow Separation

edited by Chencan Du and Yubin Wang

submission deadline 10 Apr 2025 | 2 articles | Viewed by 1862 | Submission Open

Keywords: multiphase flow; separation technology; equipment design; process intensification; fluid dynamics; computational modeling; mass transfer; sustainable processes; environmental impact

(This special issue belongs to the Section Separation Engineering)

Determination and Analysis of Volatiles by Solid Phase Microextraction, GC-MS, LC-MS and HPLC

edited by

Marisabel Mecca

and

Maurizio D’Auria

submission deadline 10 Apr 2025 | 1 articles | Viewed by 1275 | Submission Open

Keywords: extractives; VOCs; GC-MS; chemical characterization; SPME; on-fiber derivatization; on-site sampling

(This special issue belongs to the Section Chromatographic Separations)

Microbial Methods for Pollutant Removal and Wastewater Treatment

edited by Ivana D. Radojević

submission deadline 10 Apr 2025 | Viewed by 82 | Submission Open

Keywords: microorganisms; biological wastewater treatment; biofilms; environmental pollutants; microbiological

(This special issue belongs to the Section Environmental Separations)

Separation Techniques in Drug Analysis

edited by Ionel Bogdan Cioroiu and

Marius Niculaua

submission deadline 20 Apr 2025 | 1 articles | Viewed by 830 | Submission Open

Keywords: LC-MS; GC-MS; LC-GC-MS; sample preparation; drug analysis; pharmaceuticals; bidimensional methods; method validation

(This special issue belongs to the Section Analysis of Natural Products and Pharmaceuticals)

Development and Applications of Chromatographic Materials and Analytical Methods

edited by Youxin Li and Ruibing Chen

submission deadline 20 Apr 2025 | 1 articles | Viewed by 599 | Submission Open

Keywords: gas chromatography related materials and analytical methods; HPLC-related materials and analytical methods; capillary electrophoresis materials and methods; tandem technology; pharmaceutical applications; food applications; chemistry applications; environment applications; clinic applications; chiral separations

(This special issue belongs to the Section Chromatographic Separations)

Separation Techniques on a Miniaturized Scale

edited by

Fernando Lanças

and Deyber Arley Vargas Medina

submission deadline 20 Apr 2025 | Viewed by 176 | Submission Open

Keywords: miniaturized sample preparation; sorbent-based microextraction; solvent-based microextraction; miniaturized instrumentation; green analytical chemistry; liquid chromatography; gas chromatography; open tubular liquid chromatography; capillary electrophoresis; microfluidic devices

(This special issue belongs to the Section Chromatographic Separations)

Chromatographic Methods for Environment, Biota and Food Contaminants Analysis

edited by Melinda Haydee Kovács and Emőke Dalma Kovács

submission deadline 20 Apr 2025 | Viewed by 132 | Submission Open

Keywords: Gas chromatography; Liquid chromatography; Detectors (including mass spectrometer); Extraction procedures; Purification techniques; Environmental samples; Biological samples

(This special issue belongs to the Section Chromatographic Separations)

Application of Nanoparticles in Selective Separation and Extraction

edited by

Alejandro Pérez-Larios

submission deadline 20 Apr 2025 | Viewed by 113 | Submission Open

Keywords: nanoparticles (NPs); selective separation; extraction; adsorption; magnetic nanoparticles (MNPs); catalytic processes; membrane technologies; environmental remediation; biotechnology; chemical engineering

(This special issue belongs to the Section Materials in Separation Science)

New Directions in Nanostructured Hybrid Materials for Selective Separations and Catalysis

edited by

Muhammad Ahsan Iqbal

and

Valter Maurino

submission deadline 20 Apr 2025 | Viewed by 110 | Submission Open

Keywords: nanostructured hybrid materials; photochemical processes; liquid/air pollutant treatments; surface functionalization; multifunctional coatings

(This special issue belongs to the Section Materials in Separation Science)

Environmental Functional Nanomaterials in Heavy Metal Removal and Pollutant Degradation

edited by Che-Jung Hsu and Tse-Lun Chen

submission deadline 20 Apr 2025 | Viewed by 95 | Submission Open

Keywords: adsorption; absorption; electrochemical separation; capacitive deionization; heavy metals; rare earth metals; environmental remediation; organic compounds; PFAS; PAHs; PBDEs

(This special issue belongs to the Section Materials in Separation Science)

Separation Process for Sustainable Utilization of Bioresources

edited by

Hideo Maruyama

submission deadline 30 Apr 2025 | Viewed by 308 | Submission Open

Keywords: biomass; bioresource utilization; sustainability; separation; separation engineering; chemical engineering

(This special issue belongs to the Section Separation Engineering)

Separation Technology in Chemical Engineering

edited by Ming Xia

submission deadline 30 Apr 2025 | Viewed by 117 | Submission Open

Keywords: high-COD organic waste water; pre-treatment; unit operation; energy-efficient

(This special issue belongs to the Section Environmental Separations)

Separation and Extraction Technology in Mineral Processing

edited by Guixia Fan and Jianhua Kang

submission deadline 10 May 2025 | 4 articles | Viewed by 5435 | Submission Open

Keywords: fine-grained minerals; surface and interface process; adsorption kinetics; flotation mechanism; molecular dynamics simulation; solution chemistry; selective separation; reagent development

(This special issue belongs to the Section Separation Engineering)

Isolation and Identification of Biologically Active Natural Compounds

edited by Iulia Varzaru and

Arabela Elena Untea

submission deadline 10 May 2025 | 4 articles | Viewed by 4467 | Submission Open

Keywords: plants; by-products; bioactive compounds; isolation methods; chromatography; antioxidant activity; antimicrobial activity; bioavailable compounds; nutraceuticals

(This special issue belongs to the Section Analysis of Natural Products and Pharmaceuticals)

Chemical and Contaminant Residue Analysis via Chromatography

edited by

Evangelia Tzanetou

and

Konstantinos M. Kasiotis

submission deadline 10 May 2025 | 1 articles | Viewed by 1450 | Submission Open

Keywords: liquid chromatography; gas chromatography; contaminants; residues; volatile organic compounds; mass spectrometry; food; environment; biological fluids; regulatory compliance; risk assessment

(This special issue belongs to the Section Chromatographic Separations)

Green Extraction Processes to Recover Natural Bioactive Compounds from Food By-Products

edited by

Peyman Ebrahimi

and

Anna Lante

submission deadline 10 May 2025 | 1 articles | Viewed by 1220 | Submission Open

Keywords: green technologies; extraction methods; polyphenols; natural antioxidants; food by-products

(This special issue belongs to the Section Analysis of Natural Products and Pharmaceuticals)

Application of Sustainable Separation Techniques in Food Processing

edited by Beatriz Cervejeira Bolanho Barros and Huafeng Zhang

submission deadline 10 May 2025 | Viewed by 153 | Submission Open

Keywords: sustainable process; extraction; distillation; centrifugation; filtration; decantation; bioactive compounds

(This special issue belongs to the Section Analysis of Food and Beverages)

Separation and Recovery Technology for Mineral Flotation and Solid Waste

edited by Yujin Sun and

Xiangning Bu

submission deadline 10 May 2025 | Viewed by 102 | Submission Open

Keywords: separation technology; mineral flotation; coal-based waste; resource recovery; sustainable practices; environmental impact; adhesion force; novel reagents; bubble– particle; wetting

(This special issue belongs to the Section Separation Engineering)

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