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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 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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Advanced Separation Technology for Sludge Wastewater Treatment and Resource Utilization

edited by Bingdi Cao

submission deadline 10 Jun 2026 | 1 articles | Viewed by 1142 | 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)

Advances in Technologies Used for Mineral Separation

edited by Qiang Zhao and

Baoyu Cui

submission deadline 10 Jun 2026 | 1 articles | Viewed by 468 | Submission Open

Keywords: mineral processing; separation theory; practical applications; mathematical model; numerical simulation; process intensification; structural design

(This special issue belongs to the Section Separation Engineering)

Application of Advanced Oxidation Processes (AOPs) in Wastewater Treatment

edited by Hongwei Sun

submission deadline 10 Jun 2026 | Viewed by 273 | Submission Open

Keywords: advanced oxidation processes; wastewater; catalysts; emerging pollutants; recalcitrant pollutants; cost evaluation; durability

(This special issue belongs to the Section Environmental Separations)

Advanced Oxidation Processes for Efficient Removal of Organic Pollutants in Water Treatment

edited by

Yan Wang

submission deadline 10 Jun 2026 | Viewed by 175 | Submission Open

Keywords: advanced oxidation processes; degradation of organic pollutants; water treatment; structure of catalysts; catalytic mechanisms

(This special issue belongs to the Section Separation Engineering)

Research on Advanced Oxidation Water Treatment Technology Based on Electrochemical/Chemical Technology in Emerging Pollutants Removal

edited by

Kaikai Zhang

, Shaogang Hu and Chao Li

submission deadline 10 Jun 2026 | Viewed by 167 | Submission Open

Keywords: advanced oxidation processes; emerging pollutants; wastewater treatment; pollutant degradation; electrochemistry; groundwater remediation; water purification; sustainable water treatment

(This special issue belongs to the Section Separation Engineering)

Advances in Separation and Leaching for Metal Recovery

edited by Yun Li and

Hui Xu

submission deadline 20 Jun 2026 | 1 articles | Viewed by 1675 | Submission Open

Keywords: metal recovery; separation; leaching; efficiency; selectivity; sustainable recovery

(This special issue belongs to the Section Separation Engineering)

Research on Separation Techniques for Metabolomics and Pharmacokinetics Analysis

edited by

Mamunur Rashid

submission deadline 20 Jun 2026 | Viewed by 274 | 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)

Green Separation and Purification Technology: Second Edition

edited by

Shun Yao

submission deadline 20 Jun 2026 | Viewed by 255 | Submission Open

Keywords: greenness; separations; solvents; materials; assessments

(This special issue belongs to the Section Separation Engineering)

Separation Techniques for Wastewater Treatment

edited by

Xiaomin Ma

and Ming Chang

submission deadline 20 Jun 2026 | Viewed by 182 | Submission Open

Keywords: water purification; wastewater treatment and reuse; solid– liquid separation; pollutant removal and detection; flocculant and coagulant; adsorbent and adsorption process; membrane materials for separation; sedimentation and chelation

(This special issue belongs to the Section Purification Technology)

Application of Chromatographic Techniques for the Determination of Active Pharmaceutical Compounds

edited by Juan Li and

Xingchu Gong

submission deadline 20 Jun 2026 | Viewed by 170 | Submission Open

Keywords: drug analysis; method development; chromatography; liquid chromatography– mass spectrometry; bioanalysis; method validation; pharmacokinetics; structural characterization

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

Separation Techniques in Environmental Analysis

edited by

Eliézer Quadro Oreste

and

Sergiane Souza Caldas

submission deadline 20 Jun 2026 | Viewed by 163 | Submission Open

Keywords: separation techniques; chromatography; electrophoresis; sample preparation; fractionation; green microextractions; emerging contaminants; green analytical chemistry; environmental monitoring; analytical validation

(This special issue belongs to the Section Environmental Separations)

Advances in Membrane Technology for Separation

edited by Pengjia Dou

submission deadline 20 Jun 2026 | Viewed by 156 | Submission Open

Keywords: membrane separation; membrane technology; ion separation; molecular separation; electro-membrane processes; resource recovery; water purification; wastewater treatment; novel membrane materials; separation mechanism

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

Materials from Biomass and Waste for Adsorption Applications

edited by

Marija M. Vukčević

submission deadline 30 Jun 2026 | 5 articles | Viewed by 14010 | Submission Open

Keywords: adsorption; biosorption; biomass; waste materials; materials modification; organic pollutants; inorganic pollutants; water purification; adsorption mechanism

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

Microbial Methods for Pollutant Removal and Wastewater Treatment

edited by Ivana D. Radojević

submission deadline 30 Jun 2026 | 1 articles | Viewed by 2358 | Submission Open

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

(This special issue belongs to the Section Environmental Separations)

Novel Functional Separation Materials for Water Treatment

edited by

Zhujian Huang

and

Xinjiang Hu

submission deadline 30 Jun 2026 | 1 articles | Viewed by 676 | 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)

Molecularly Imprinting Polymers for Separation and Detection

edited by

Rogelio Flores-Ramírez

and

Karla Ximena Vargas-Berrones

submission deadline 30 Jun 2026 | Viewed by 102 | Submission Open

Keywords: molecularly imprinting polymers; emerging pollutants; water quality; SDGs; sustainable development; green technologies; water bioremediation; environmental health

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

Green Extraction of Natural Products for Application in Pharmaceuticals, Foods, Cosmetics and Agriculture

edited by

Luicita Lagunez-Rivera

, Esther Ramirez Moreno and

Othmane Merah

submission deadline 10 Jul 2026 | 4 articles | Viewed by 7209 | Submission Open

Keywords: plant species sources; orchids; primary metabolites; secondary metabolites; essential oils; fragrances; antioxidant activity; pharmaceutical application; nutraceutical application; molecular nutrition; intestinal bioaccessibility; agricultural uses

(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

Zorica Knežević-Jugović

submission deadline 10 Jul 2026 | 4 articles | Viewed by 4424 | 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)

Eco-Friendly Innovations for Water Purification: Advanced Oxidation and Sustainable Cleanup Solutions

edited by

Szabolcs Bognár

Predrag Putnik

and

Daniela Šojić Merkulov

submission deadline 10 Jul 2026 | 2 articles | Viewed by 2572 | 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)

Innovative Sustainable Methods for Food Component Extraction

edited by

Nada Grahovac

, Zorica Stojanovic and Ana Đurović

submission deadline 10 Jul 2026 | 1 articles | Viewed by 1724 | Submission Open

Keywords: sustainable separation; food extraction; environmental responsibility; resource minimization; innovative techniques; bioactive compounds; functional foods

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

Advanced Treatment Technologies for Emerging Contaminant Control and Resource Utilization

edited by

Rui Qin

and

Ying Zhang

submission deadline 10 Jul 2026 | 1 articles | Viewed by 1217 | Submission Open

Keywords: emerging contaminants; advanced oxidation processes; membrane filtration; adsorption; biological treatment; resource recovery

(This special issue belongs to the Section Environmental Separations)

Environmental Functional Materials for Pollutant Separation and Remediation

edited by

Kunlun Yang

, Jian Mei,

Feilong Zhang

and Jingzhen Zhang

submission deadline 10 Jul 2026 | 1 articles | Viewed by 547 | Submission Open

Keywords: environmental functional materials; novel treatment technology; water treatment; emerging pollutants; modification and application

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

Numerical Modeling and Computation in Separation and Adsorption

edited by Hao Wu

submission deadline 10 Jul 2026 | 1 articles | Viewed by 455 | Submission Open

Keywords: computational fluid dynamics (CFD); mass transfer separation; multiscale simulation; process optimization; multiphase flow; molecular simulation

(This special issue belongs to the Section Separation Engineering)

Method Development and Validation for Chromatographic Analysis in Complex Matrices

edited by

Marek Studziński

and Malinowska Irena

submission deadline 10 Jul 2026 | Viewed by 148 | Submission Open

Keywords: design of experiments; method optimization; complex matrices; multidimensional chromatography; sample preparation

(This special issue belongs to the Section Chromatographic Separations)

Recent Advances in Gas Separation

edited by Yalou Guo

submission deadline 10 Jul 2026 | Viewed by 136 | 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 Separation Science in Energies)

Research on Metal Resource Recycling and Efficient Extraction Technologies

edited by Qiongqiong He and Keji Wan

submission deadline 10 Jul 2026 | Viewed by 125 | Submission Open

Keywords: metal recycling; sustainable metallurgy; circular economy; hydrometallurgy; electronic waste (e-waste); resource efficiency; life cycle assessment (LCA); AI-driven optimization

(This special issue belongs to the Section Separation Engineering)

Preparation and Application of Carbon-Based Materials in Pollutant Removal

edited by

Shangyi Li

submission deadline 10 Jul 2026 | Viewed by 123 | Submission Open

Keywords: carbon-based materials; water and wastewater treatment; adsorption technology; advanced catalytic oxidation; pollutants removal; large-scale deployment

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

Extraction and Isolation of Nutraceuticals from Plant Foods

edited by

Anamaria Pop

and

Gheorghe Martău

submission deadline 20 Jul 2026 | 2 articles | Viewed by 5143 | 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

Hangzhen Lan

and Peipei Qi

submission deadline 20 Jul 2026 | 2 articles | Viewed by 3260 | 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 | 2 articles | Viewed by 1788 | 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)

Biological Removal of Emerging Contaminants: Toxicological Effects and Process Mechanisms

edited by Yongfu Li and Litao Zhang

submission deadline 20 Jul 2026 | 1 articles | Viewed by 689 | Submission Open

Keywords: emerging contaminants; microplastics; nanomaterial; pharmaceuticals and personal care products (PPCPs); bio-toxicity; bio-removal technologies and mechanisms

Leaching, Flotation, and Separation Technologies for Sustainable Metal Recovery

edited by Yuandong Liu

submission deadline 20 Jul 2026 | Viewed by 260 | 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)

Recent Advances in Carbon Dioxide Capture, Utilization, and Storage Technology

edited by Pengfei Wang,

Ying Teng

Shuyang Liu

and Bingbing Chen

submission deadline 20 Jul 2026 | Viewed by 189 | 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

Hongmin Cui

submission deadline 20 Jul 2026 | Viewed by 110 | 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)

Separation Technology for Resource Utilization and Recovery

edited by

Hao Li

submission deadline 31 Jul 2026 | 4 articles | Viewed by 6114 | 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)

State of the Art and Challenges in the Analysis of Volatile Organic Compounds

edited by Jérôme Vial and

Sylvain Antoniotti

submission deadline 31 Jul 2026 | 2 articles | Viewed by 3108 | 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 | 3 articles | Viewed by 2388 | 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

Natália Ueda Yamaguchi

and Karina Querne de Carvalho

submission deadline 31 Jul 2026 | Viewed by 181 | 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

Lukhanyo Mekuto

submission deadline 31 Jul 2026 | Viewed by 169 | Submission Open

Keywords: emerging contaminants; enzymes; bioremediation; biodegradation; bioconversion; biocatalysis; bioprocess engineering; metabolite profiling

(This special issue belongs to the Section Environmental Separations)

Advanced Separation Methods for Safety Assessment and Valorization of By-Products

edited by

Mikel Añibarro-Ortega

and

José Pinela

submission deadline 10 Aug 2026 | 1 articles | Viewed by 2813 | 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)

Advanced Materials for Heavy Metal Adsorption in Wastewater Treatment

edited by Jiahui Zhu and Huiquan Gu

submission deadline 10 Aug 2026 | Viewed by 282 | Submission Open

Keywords: adsorption; water treatment; heavy metal ion; membrane separation; nanomaterials

(This special issue belongs to the Section Separation Engineering)

Extraction, Purification and Functional Substances of Natural Products and Plants

edited by

Xiumei Li

submission deadline 20 Aug 2026 | 5 articles | Viewed by 4592 | 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 Chromatographic Separation Techniques for the Analysis of Drugs of Abuse

edited by

Rossella Barone

and Jennifer Pascali

submission deadline 20 Aug 2026 | Viewed by 213 | Submission Open

Keywords: toxicology; mass spectrometry; biological matrices; psychoactive substances; method development; validation

(This special issue belongs to the Section Chromatographic Separations)

Green and Efficient Solvent Extraction: Advances in Technology and Equipment

edited by

Shaowei Li

submission deadline 20 Aug 2026 | Viewed by 123 | Submission Open

Keywords: solvent design; extraction mechanism; extraction technology development; new application of solvent extraction; extraction equipment; two-phase flow in extraction; micro-extractor; numerical simulation of solvent extraction; AI in solvent extraction

(This special issue belongs to the Section Separation Engineering)

Extraction and Analysis of Chemical Composition from Natural Products and Metabolites (2nd Edition)

edited by

Aurea Bernardino-Nicanor

and

Leopoldo González Cruz

submission deadline 20 Aug 2026 | Viewed by 85 | 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)

The Latest Progress in the Coal-Based Solid Waste Particle Separation

edited by Haisheng Li

submission deadline 20 Aug 2026 | Viewed by 74 | Submission Open

Keywords: separation; solid waste; gravity sorting; flotation; electrostatic separation; ultrafine particles; intelligent sorting; intelligent control; machine vision; dry sorting; high-value utilization; mineral materials; industrial dust removal

(This special issue belongs to the Section Separation Engineering)

Applications of Adsorbent Materials in Water and Wastewater Treatment

edited by Dragana Živojinović

submission deadline 31 Aug 2026 | 3 articles | Viewed by 4067 | 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

Yuanpeng Fu

and Zhen Shang

submission deadline 31 Aug 2026 | 1 articles | Viewed by 1540 | 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 73 | 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)

Application of Chromatography in Bioactive Compound Analysis

edited by

Milan N. Mitić

, Vesna Stankov-Jovanovic and Jelena S. Nikolić

submission deadline 10 Sep 2026 | 1 articles | Viewed by 1951 | Submission Open

Keywords: analytical method validation; sample preparation; antioxidant compounds; phytochemicals; chromatography; bioactive compounds; natural products; LC-MS; HPLC; GC-MS

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

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