Special Issues

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 policies 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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Chemical and Contaminant Residue Analysis via Chromatography submission deadline 10 Nov 2025 | 3 articles | Viewed by 7391 | 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)
Separation Techniques on a Miniaturized Scale
edited by and Deyber Arley Vargas Medina
submission deadline 10 Nov 2025 | 3 articles | Viewed by 6460 | 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)
State of the Art and Challenges in the Analysis of Volatile Organic Compounds
edited by Jérôme Vial and
submission deadline 10 Nov 2025 | 2 articles | Viewed by 1656 | Submission Open
Keywords: GC-MS; GCxGC; headpsace techniques; chemometrics; volatolomic; scent sampling; aroma; thermodeorption
(This special issue belongs to the Section Chromatographic Separations)
Eco-Friendly Innovations for Water Purification: Advanced Oxidation and Sustainable Cleanup Solutions submission deadline 10 Nov 2025 | 1 articles | Viewed by 823 | Submission Open
Keywords: environmental pollution; water contamination; sustainable water treatment; advanced oxidation processes; electrochemical advanced oxidation processes; organic pollutant removal; green nanotechnology; bioinspired materials
(This special issue belongs to the Section Environmental Separations)
Advanced Separation Technology for Sludge Wastewater Treatment and Resource Utilization
edited by Bingdi Cao
submission deadline 10 Nov 2025 | 1 articles | Viewed by 552 | Submission Open
Keywords: sludge; solid– liquid separation; dewatering agent; extracellular polymeric substances (EPSs); electro-dewatering; coagulants
(This special issue belongs to the Section Purification Technology)
Innovative Separation Techniques for Adsorption and Control of Soil and Water Contaminants
edited by Niloofar Karimian
submission deadline 10 Nov 2025 | Viewed by 279 | Submission Open
Keywords: adsorption; soil and water remediation; contaminants; heavy metals; PFAS; biochar; nanomaterials; hybrid technologies; synchrotron spectroscopy; sustainable materials; separation techniques; environmentally friendly processes; sustainability innovative approaches
(This special issue belongs to the Section Purification Technology)
Graphene-Based Nanocomposites for Efficient Remediation of Emerging Organic Pollutants (EOPs) and Heavy Metals Contaminated Water submission deadline 10 Nov 2025 | Viewed by 143 | Submission Open
Keywords: nanophotocatalysts; nanoadsorbents; emerging pollutants; heavy metals; polyaromatic hydrocarbon compound; nanoparticles/composite nanoadsorbents; endocrine-disrupting chemicals; nanophotocatalysis; rGO-based metallic photocatalyst; adsorption modelling
(This special issue belongs to the Section Environmental Separations)
Removal of Volatile Organic Compounds by Adsorption/Catalytic Methods submission deadline 15 Nov 2025 | Viewed by 752 | Submission Open
Keywords: VOC; adsorption; catalytic; natural materials; composite materials; mixtures
(This special issue belongs to the Section Separation Engineering)
New Directions in Nanostructured Hybrid Materials for Selective Separations and Catalysis submission deadline 20 Nov 2025 | 1 articles | Viewed by 1428 | 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)
Applications of Adsorbent Materials in Water and Wastewater Treatment
edited by Dragana Živojinović
submission deadline 20 Nov 2025 | 3 articles | Viewed by 1190 | Submission Open
Keywords: adsorption; biosorbent; biomass-derived material; waste materials; eco-friendly adsorbents; water treatment; pollutant removal; organic pollutants; inorganic pollutants
(This special issue belongs to the Section Materials in Separation Science)
Application of Nanoparticles in Selective Separation and Extraction submission deadline 20 Nov 2025 | Viewed by 309 | 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)
Extraction and Pharmaceutical Application of Phytochemicals submission deadline 20 Nov 2025 | Viewed by 166 | Submission Open
Keywords: natural products; phytochemicals; pharmacognosy; secondary metabolites; phytopharmaceuticals; phytotherapy
(This special issue belongs to the Section Analysis of Natural Products and Pharmaceuticals)
Research on Separation Techniques for Metabolomics and Pharmacokinetics Analysis
edited by Mamunur Rashid
submission deadline 20 Nov 2025 | Viewed by 163 | Submission Open
Keywords: metabolomics; pharmacokinetics; mass spectrometry; UPLC; supercritical fluid chromatography (SFC); separation technology; biomarker discovery; personalized medicine
(This special issue belongs to the Section Bioanalysis/Clinical Analysis)
Separation Technology Applications in Sample Preparation for Environmental Analysis
edited by and Hongjie Sheng
submission deadline 20 Nov 2025 | Viewed by 112 | Submission Open
Keywords: environmental samples; quantitative analysis; extraction; separation technology; analytical methods; chromatography
(This special issue belongs to the Section Environmental Separations)
New and Modified Polymers for Detection and Removal of Pollutants from Water and Air
edited by Aleksandra Nastasović and
submission deadline 30 Nov 2025 | 2 articles | Viewed by 2389 | 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)
Advances in Novel Beneficiation Technology of Critical Minerals
edited by Jue Kou
submission deadline 30 Nov 2025 | 2 articles | Viewed by 2064 | Submission Open
Keywords: critical minerals; ore beneficiation; sensor-based ore sorting; flotation; gravity separation; magnetic separation; leaching
(This special issue belongs to the Section Environmental Separations)
Novel Functional Separation Materials for Water Treatment
edited by and
submission deadline 30 Nov 2025 | Viewed by 154 | Submission Open
Keywords: advanced oxidation processes; nanomaterials for water treatment; membrane technology; electrochemical water treatment; sustainable water purification; contaminant removal; resource recovery; hybrid treatment systems; bio-based adsorbents; water– energy nexus
(This special issue belongs to the Section Materials in Separation Science)
Application of Sustainable Separation Techniques in Food Processing
edited by Beatriz Cervejeira Bolanho Barros and Huafeng Zhang
submission deadline 10 Dec 2025 | 5 articles | Viewed by 8176 | Submission Open
Keywords: sustainable process; extraction; distillation; centrifugation; filtration; decantation; bioactive compounds
(This special issue belongs to the Section Analysis of Food and Beverages)
Chromatographic Methods for Environment, Biota and Food Contaminants Analysis
edited by Melinda Haydee Kovács and Emőke Dalma Kovács
submission deadline 10 Dec 2025 | 2 articles | Viewed by 4035 | 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)
Mineral Processing and Separation: Research, Innovation and Production
edited by
submission deadline 10 Dec 2025 | 1 articles | Viewed by 2449 | Submission Open
Keywords: magnetic separation; flotation; gravity separation; electric separation; separation modeling; ore purification
(This special issue belongs to the Section Separation Engineering)
Removal of Organic Pollutants from Aqueous Systems
edited by Li Yan
submission deadline 10 Dec 2025 | 1 articles | Viewed by 2301 | Submission Open
Keywords: organic pollutants; PFAS; adsorption; degradation; mechanisms; modeling; aquatic chemistry; interfacial processes; advanced materials; water treatment
(This special issue belongs to the Section Environmental Separations)
Separation and Recovery Technology for Mineral Flotation and Solid Waste
edited by Yujin Sun and
submission deadline 10 Dec 2025 | 2 articles | Viewed by 1682 | 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)
Advances in Biochar-Mediated Nitrogen and Phosphorus Removal from Water
edited by
submission deadline 10 Dec 2025 | Viewed by 175 | Submission Open
Keywords: nitrogen (N); phosphorus (P); biochar; adsorption; redox catalysis; denitrification; N2O emission; wastewater treatment; eutrophication mitigation
(This special issue belongs to the Section Environmental Separations)
Recovery of Precious Metals and Metal Nanoparticles from Electronic and Industrial Waste submission deadline 10 Dec 2025 | Viewed by 152 | Submission Open
Keywords: e-waste recycling; precious metal recovery; metal nanoparticle extraction; advanced separation techniques; circular economy in electronics; selective uptake of precious metals and metal nanoparticles
(This special issue belongs to the Section Purification Technology)
Development of Functionalized Porous Materials for Adsorption and Separations
edited by Thomas J. Robshaw and
submission deadline 10 Dec 2025 | Viewed by 141 | Submission Open
Keywords: ion-exchange; adsorption; porous materials; chemical separation; water treatment; hydrometallurgy; gas capture; resource recovery
(This special issue belongs to the Section Materials in Separation Science)
Recent Advances in Adsorbent for Environmental Purification
edited by
submission deadline 10 Dec 2025 | Viewed by 93 | Submission Open
Keywords: adsorption; hybrid materials; calcium phosphates; structure; separation techniques; environmentally friendly processes; sustainability innovative approaches
(This special issue belongs to the Section Materials in Separation Science)
Extraction and Isolation of Nutraceuticals from Plant Foods submission deadline 20 Dec 2025 | 2 articles | Viewed by 3503 | Submission Open
Keywords: nutraceuticals; plant-based foods; extraction methods; isolation techniques; green technologies; bioavailability; solvent extraction; supercritical fluid extraction; functional foods; sustainable processes
Application of Adsorption and Separation Technologies in Water Treatment
edited by Jelena Mitrović, and
submission deadline 20 Dec 2025 | 2 articles | Viewed by 1161 | Submission Open
Keywords: adsorption; separation technologies; water treatment; adsorbent preparation; pollutant removal; water contaminants
(This special issue belongs to the Section Environmental Separations)
Application of Green Flotation Technology in Mineral Processing
edited by Wenli Liu and Qiming Zhuo
submission deadline 20 Dec 2025 | 1 articles | Viewed by 996 | Submission Open
Keywords: mineral processing; green flotation technology; flotation reagents; flotation process; waste water treatment; solid waste treatment; flotation equipment; intelligent flotation technologies; resource recycling; pollution control
(This special issue belongs to the Section Separation Engineering)
Engineering the Loop: Advancing Wastewater Treatment and Sludge Valorization Through Innovative Separation Materials submission deadline 20 Dec 2025 | 1 articles | Viewed by 788 | Submission Open
Keywords: wastewater; sludge; circular economy; anaerobic digestion; resource recovery; advanced oxidation processes; adsorption; pollutants
(This special issue belongs to the Section Separation Engineering)
Nutraceuticals from Natural Products: Innovative Extraction Techniques and Their Phytochemical Properties
edited by , Anca Becze and
submission deadline 20 Dec 2025 | Viewed by 745 | Submission Open
Keywords: extraction; fortification; nutraceuticals; bioactive substances; green extraction; instrumental analysis; health benefits; biological activities
Separation Process for Sustainable Utilization of Bioresources
edited by
submission deadline 20 Dec 2025 | Viewed by 538 | Submission Open
Keywords: biomass; bioresource utilization; sustainability; separation; separation engineering; chemical engineering
(This special issue belongs to the Section Separation Engineering)
Microbial Methods for Pollutant Removal and Wastewater Treatment
edited by Ivana D. Radojević
submission deadline 20 Dec 2025 | Viewed by 330 | Submission Open
Keywords: microorganisms; biological wastewater treatment; biofilms; environmental pollutants; microbiological
(This special issue belongs to the Section Environmental Separations)
Innovative Adsorption Materials and Extraction Technology for Food Sample Detection
edited by and Peipei Qi
submission deadline 20 Dec 2025 | Viewed by 311 | Submission Open
Keywords: food; sample preparation; selective extraction; chromatography; mass spectrometry; computational modeling; machine learning
Separation Technology in Mineral Processing
edited by and Zeyu Feng
submission deadline 20 Dec 2025 | Viewed by 203 | Submission Open
Keywords: dewatering; flocculation; flotation; selective aggregation; water recycling; bubble– particle interactions; reagents
(This special issue belongs to the Section Separation Engineering)
Leaching, Flotation, and Separation Technologies for Sustainable Metal Recovery
edited by Yuandong Liu
submission deadline 20 Dec 2025 | Viewed by 176 | Submission Open
Keywords: metal recovery; separation; leaching; bioleaching; ion exchange; adsorption; solvent extraction; electrolysis; minerals processing; flotation
(This special issue belongs to the Section Separation Engineering)
Isolation, Purification and Identification of Active Peptides
edited by Fei Gao and
submission deadline 20 Dec 2025 | Viewed by 87 | Submission Open
Keywords: bioactive peptides; protein hydrolysates; separation science; mass spectrometry; structure– activity relationships; functional foods; therapeutic peptides
(This special issue belongs to the Section Analysis of Natural Products and Pharmaceuticals)
Chromatographic Analysis of Biomarkers
edited by Mark Woollam and
submission deadline 31 Dec 2025 | 1 articles | Viewed by 3265 | Submission Open
Keywords: chromatography; biomarkers; diagnostics; prognostics; clinical validation; method development; data analysis; chemometrics
(This special issue belongs to the Section Chromatographic Separations)
Application of Composite Materials in Wastewater Treatment
edited by Yizhen Cheng, Pengwei Yan and Yabin Li
submission deadline 31 Dec 2025 | 2 articles | Viewed by 2509 | Submission Open
Keywords: wastewater treatment; water purification; composite materials; interface mechanism; adsorption; catalytic oxidation
(This special issue belongs to the Section Materials in Separation Science)
Advanced Separation Methods for Safety Assessment and Valorization of By-Products submission deadline 31 Dec 2025 | 1 articles | Viewed by 1951 | Submission Open
Keywords: crop by-product valorization; agri-food by-products; safety assessment; analytical methods; bioactive compounds; separation methods; upcycling; sustainable processing; food safety; nutraceuticals
(This special issue belongs to the Section Purification Technology)
New Techniques for Extraction and Removal of Pesticide Residues
edited by Zhonghua Yang
submission deadline 31 Dec 2025 | 1 articles | Viewed by 972 | Submission Open
Keywords: pesticide multi-residue analysis; green extraction; smart purification; environmental remediation; AI-driven optimization
(This special issue belongs to the Section Environmental Separations)
Innovative Analytical Strategies Based on Mass Spectrometry in Food Analysis
edited by
submission deadline 31 Dec 2025 | 1 articles | Viewed by 936 | Submission Open
Keywords: analytical methods; mass spectrometry; chromatography; bioactive compounds; contaminants; targeted analysis; untargeted analysis; food; vegetables; beverages
(This special issue belongs to the Section Analysis of Food and Beverages)
Advanced Treatment Technologies for Emerging Contaminant Control and Resource Utilization
edited by and
submission deadline 31 Dec 2025 | 1 articles | Viewed by 677 | Submission Open
Keywords: emerging contaminants; advanced oxidation processes; membrane filtration; adsorption; biological treatment; resource recovery
(This special issue belongs to the Section Environmental Separations)
Separation Technology in Chemical Engineering
edited by Ming Xia
submission deadline 31 Dec 2025 | Viewed by 403 | Submission Open
Keywords: high-COD organic waste water; pre-treatment; unit operation; energy-efficient
(This special issue belongs to the Section Environmental Separations)
Novel Green Solvents for the Separation and Purification of Valuable Natural Ingredients
edited by
submission deadline 10 Jan 2026 | 2 articles | Viewed by 4280 | Submission Open
Keywords: ionic liquids; deep eutectic solvents; liquid– liquid separation; separation and purification; natural materials
(This special issue belongs to the Section Analysis of Natural Products and Pharmaceuticals)
Separation Technology for Resource Utilization and Recovery
edited by
submission deadline 10 Jan 2026 | 1 articles | Viewed by 3132 | Submission Open
Keywords: separation technology; membrane separation; extraction; adsorption separation; electrochemical separation; molecular recognition; molecular/ion imprinting; resource recovering; metal recycling; environment application
(This special issue belongs to the Section Separation Engineering)
Extraction, Purification and Functional Substances of Natural Products and Plants
edited by
submission deadline 10 Jan 2026 | 3 articles | Viewed by 1953 | Submission Open
Keywords: extraction; separation and purification; chromatography; membrane separation; solvent extraction method; macroporous resin adsorption method; functional substances; flavonoids; polyphenol; polysaccharide; identification; natural products
(This special issue belongs to the Section Analysis of Natural Products and Pharmaceuticals)
Advances in the Analysis of Bioactive Plant Extracts: Separation Techniques and Their Applications
edited by Saša Savić, Sanja Petrovic and
submission deadline 10 Jan 2026 | 1 articles | Viewed by 1306 | Submission Open
Keywords: natural products; pharmaceutical analysis; bioactive compounds; chromatographic techniques; spectroscopic methods; LC-MS/ICP-OES/GC-MS/NMR; metabolite profiling; stability testing and quality control
(This special issue belongs to the Section Analysis of Natural Products and Pharmaceuticals)
Innovative Separation Techniques for Sustainable Recycling of Solid Waste
edited by and Zhen Shang
submission deadline 10 Jan 2026 | 1 articles | Viewed by 1019 | Submission Open
Keywords: solid waste; pretreatment; separation; pyrometallurgical technologies; leaching; separation and purification; regeneration; direct repair technology    
(This special issue belongs to the Section Purification Technology)
Recent Advances in Lithium Extraction
edited by Shiai Xu and Qiuyan Bi
submission deadline 10 Jan 2026 | Viewed by 99 | Submission Open
Keywords: lithium; extraction; adsorption; membrane separation; salt lake; seawater; separation; purification
(This special issue belongs to the Section Purification Technology)
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