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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Recent Advances in Gas Separation
edited by Yalou Guo
submission deadline 10 Jul 2026 | Viewed by 28 | Submission Open
Keywords: gas separation; adsorption; porous materials; MOFs; zeolites; membranes; hydrogen purification; carbon capture; process design and optimization
(This special issue belongs to the Section Analysis of Energies)
Extraction and Isolation of Nutraceuticals from Plant Foods submission deadline 20 Jul 2026 | 2 articles | Viewed by 4395 | Submission Open
Keywords: nutraceuticals; plant-based foods; extraction methods; isolation techniques; green technologies; bioavailability; solvent extraction; supercritical fluid extraction; functional foods; sustainable processes
Innovative Adsorption Materials and Extraction Technology for Food Sample Detection
edited by and Peipei Qi
submission deadline 20 Jul 2026 | 2 articles | Viewed by 1939 | Submission Open
Keywords: food; sample preparation; selective extraction; chromatography; mass spectrometry; computational modeling; machine learning
Application of Green Flotation Technology in Mineral Processing
edited by Wenli Liu and Qiming Zhuo
submission deadline 20 Jul 2026 | 1 articles | Viewed by 1269 | 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)
Leaching, Flotation, and Separation Technologies for Sustainable Metal Recovery
edited by Yuandong Liu
submission deadline 20 Jul 2026 | Viewed by 214 | 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)
Biological Removal of Emerging Contaminants: Toxicological Effects and Process Mechanisms
edited by Yongfu Li and Litao Zhang
submission deadline 20 Jul 2026 | Viewed by 171 | Submission Open
Keywords: emerging contaminants; microplastics; nanomaterial; pharmaceuticals and personal care products (PPCPs); bio-toxicity; bio-removal technologies and mechanisms
Recent Advances in Carbon Dioxide Capture, Utilization, and Storage Technology
edited by Pengfei Wang, , and Bingbing Chen
submission deadline 20 Jul 2026 | Viewed by 125 | Submission Open
Keywords: CO2 capture utilization and storage (CCUS); carbon neutrality; porous and functional materials; membrane and adsorption technologies; saline aquifer sequestration; multiphase flow and transport; source– sink matching; hydrate-based separation; geomechanics and reservoir monitoring
(This special issue belongs to the Section Separation Engineering)
Green Separation Chemistry and Technique for Rare Earth Elements
edited by
submission deadline 20 Jul 2026 | Viewed by 55 | Submission Open
Keywords: green solvent extraction; ionic liquids; deep eutectic solvents; sustainable hydrometallurgy; membrane separation; selective adsorption; recycling; waste minimization
(This special issue belongs to the Section Separation Engineering)
State of the Art and Challenges in the Analysis of Volatile Organic Compounds
edited by Jérôme Vial and
submission deadline 31 Jul 2026 | 2 articles | Viewed by 2551 | Submission Open
Keywords: GC-MS; GCxGC; headpsace techniques; chemometrics; volatolomic; scent sampling; aroma; thermodeorption
(This special issue belongs to the Section Chromatographic Separations)
New Techniques for Extraction and Removal of Pesticide Residues
edited by Zhonghua Yang
submission deadline 31 Jul 2026 | 2 articles | Viewed by 1472 | 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)
Waste-Derived Materials for Separation Processes in Water and Wastewater Treatment
edited by and Karina Querne de Carvalho
submission deadline 31 Jul 2026 | Viewed by 123 | Submission Open
Keywords: waste valorization; circular economy; water treatment; wastewater treatment; adsorption; membrane processes; coagulation– flocculation; ion exchange; low-cost adsorbent; upcycling
(This special issue belongs to the Section Materials in Separation Science)
Advances in Microbial and Enzymatic-Mediated Wastewater Purification
edited by
submission deadline 31 Jul 2026 | Viewed by 102 | Submission Open
Keywords: emerging contaminants; enzymes; bioremediation; biodegradation; bioconversion; biocatalysis; bioprocess engineering; metabolite profiling
(This special issue belongs to the Section Environmental Separations)
Extraction and Analysis of Chemical Composition from Natural Products and Metabolites (2nd Edition) submission deadline 20 Aug 2026 | Viewed by 1 | Submission Open
Keywords: HPLC separation; metabolites separation; non-conventional separation techniques; gas chromatography; protein separation; pigment separation; separation and characterization of carbohydrates
(This special issue belongs to the Section Analysis of Natural Products and Pharmaceuticals)
Applications of Adsorbent Materials in Water and Wastewater Treatment
edited by Dragana Živojinović
submission deadline 31 Aug 2026 | 3 articles | Viewed by 3279 | 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)
Innovative Separation Techniques for Sustainable Recycling of Solid Waste
edited by and Zhen Shang
submission deadline 31 Aug 2026 | 1 articles | Viewed by 1238 | 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)
Separation and Extraction Technology in Mineral Processing: Second Edition
edited by Guixia Fan
submission deadline 31 Aug 2026 | Viewed by 7 | 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)
Extraction, Separation, and Recovery of Rare Earth Elements
edited by and
submission deadline 10 Sep 2026 | Viewed by 225 | Submission Open
Keywords: rare earths recovery; solvent extraction; ion exchange; leaching of  rare earths; recycling of  rare earths; selective separation of REEs; hydrometallurgical processes; sustainable  rare earth technologies
(This special issue belongs to the Section Separation Engineering)
Separation Techniques in Recovery of Valuable Metal Resources
edited by and Zhengjie Chen
submission deadline 10 Sep 2026 | Viewed by 13 | Submission Open
Keywords: valuable metal recovery; separation techniques; secondary resources and wastes; selective separation; green and sustainable processes; process modeling and optimization; mechanism and characterization; resource recycling and circular economy
(This special issue belongs to the Section Separation Engineering)
Advancements in Microextraction Techniques for Environmental and Food Sample Analysis
edited by Nikita Tawanda Tavengwa
submission deadline 20 Oct 2026 | Viewed by 46 | Submission Open
Keywords: trace analysis; emerging organic pollutants; sample preparation; pre-concentration; modern extraction techniques
(This special issue belongs to the Section Chromatographic Separations)
Engineering the Loop: Advancing Wastewater Treatment and Sludge Valorization Through Innovative Separation Materials submission deadline 30 Nov 2026 | 1 articles | Viewed by 1046 | 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)
Separation Process for Sustainable Utilization of Bioresources
edited by
submission deadline 30 Nov 2026 | Viewed by 563 | Submission Open
Keywords: biomass; bioresource utilization; sustainability; separation; separation engineering; chemical engineering
(This special issue belongs to the Section Separation Engineering)
Separation Technology in Mineral Processing
edited by and Zeyu Feng
submission deadline 10 Dec 2026 | Viewed by 267 | Submission Open
Keywords: dewatering; flocculation; flotation; selective aggregation; water recycling; bubble– particle interactions; reagents
(This special issue belongs to the Section Separation Engineering)
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