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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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Innovative Separation Strategies for Bioactive Compounds from Plants: Methods, Mechanisms, and Applications

edited by Romero M. P. Brandão-Costa and Daniela A. Viana Marques

submission deadline 10 May 2026 | Viewed by 228

Keywords: plant-derived bioactives; phytochemical separation; chromatographic techniques; green extraction methods; membrane separation; natural products purification; bioactive compounds characterization; sustainable separation technologies; phytopharmaceuticals; functional plant ingredients

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

Isolation and Identification of Biologically Active Natural Compounds

edited by

Iulia Varzaru

and

Arabela Elena Untea

submission deadline 20 May 2026 | 7 articles | Viewed by 15818 | 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)

Novel Separation Methods for the Analysis of Active and Toxic Components in Food: Second Edition

edited by

Lorena González-Gómez

and

Sonia Morante Zarcero

submission deadline 20 May 2026 | 1 articles | Viewed by 1993 | 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)

Discussion on Advanced Extraction Techniques for Active Components of Natural Products

edited by Anelise Christ-Ribeiro,

Pinto Luiz Antonio de Almeida

and

Débora Pez Jaeschke

submission deadline 20 May 2026 | Viewed by 373 | Submission Open

Keywords: advanced extraction techniques; natural products; bioactive compounds; green chemistry; valorization; biotechnological extraction; analytical characterization; sustainable processes; food applications; pharmaceutical applications

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

Adsorbent Materials for Wastewater Treatment

edited by Che-Jung Hsu

submission deadline 20 May 2026 | Viewed by 329 | Submission Open

Keywords: adsorption; separation; purification; emerging pollutants; remediation; biochar; activated carbon; metal– organic framework; nano materials; MXene

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

Natural Product Separation and Characterization of Bioactive Plant Compounds

edited by Maria Luiza Zeraik

submission deadline 30 May 2026 | 2 articles | Viewed by 2194 | Submission Open

Keywords: natural products; bioactive compounds; plant metabolites; chromatographic separation; hyphenated techniques; sample preparation; metabolite profiling; structural characterization; phytochemistry; analytical chemistry

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

Adsorption/Degradation Methods for Water and Wastewater Treatment

edited by Milica Petrović,

Miloš Kostić

Slobodan Najdanović

Nena Velinov

and

Miljana Radović Vučić

submission deadline 31 May 2026 | 5 articles | Viewed by 9729 | Submission Open

Keywords: wastewater treatment; adsorption; electrodegradation; photodegradation; plasma degradation; (bio)sorbents; photocatalysts; plasma catalysts; pollutant removal

(This special issue belongs to the Section Purification Technology)

New Approaches to Phosphorus Pollutant Control and Phosphorus Recovery

edited by Xuejiao Tang

submission deadline 31 May 2026 | 1 articles | Viewed by 1545 | Submission Open

Keywords: phosphorus resource recovery; purification; crystallization separation; catalytic decomposition; high value-added

(This special issue belongs to the Section Environmental Separations)

Application of Sustainable Separation Techniques in Food Processing

edited by Beatriz Cervejeira Bolanho Barros and Huafeng Zhang

submission deadline 10 Jun 2026 | 5 articles | Viewed by 14789 | Submission Open

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

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

Solid Waste Recycling and Strategic Metal Extraction

edited by

Lihui Gao

Daoguang Teng

Shulei Li

and Chunlin He

submission deadline 10 Jun 2026 | 6 articles | Viewed by 12547 | Submission Open

Keywords: solid waste; biomass; adsorption material; wastewater treatment; strategic metal resources

(This special issue belongs to the Section Separation Engineering)

Design and Optimization of Extraction/Separation Processes for Natural Products

edited by

Xingchu Gong

and

Guanglei Zuo

submission deadline 10 Jun 2026 | 5 articles | Viewed by 3306 | Submission Open

Keywords: extraction/separation optimization; natural products; quality by design (QbD); analytical quality by design (AQbD); design of experiments (DoE); process analytical technology (PAT); green extraction; separation and purification; critical quality attributes (CQAs)

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

Application of Adsorption and Separation Technologies in Water Treatment

edited by Jelena Mitrović,

Nena Velinov

and

Miljana Radović Vučić

submission deadline 10 Jun 2026 | 2 articles | Viewed by 2767 | Submission Open

Keywords: adsorption; separation technologies; water treatment; adsorbent preparation; pollutant removal; water contaminants

(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 Jun 2026 | 1 articles | Viewed by 1472 | 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 889 | 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 345 | Submission Open

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

(This special issue belongs to the Section Environmental Separations)

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 268 | 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)

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

edited by

Yan Wang

submission deadline 10 Jun 2026 | Viewed by 266 | 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)

Advances in Separation and Leaching for Metal Recovery

edited by Yun Li and

Hui Xu

submission deadline 20 Jun 2026 | 1 articles | Viewed by 2213 | Submission Open

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

(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 | 2 articles | Viewed by 972 | 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)

Research on Separation Techniques for Metabolomics and Pharmacokinetics Analysis

edited by

Mamunur Rashid

submission deadline 20 Jun 2026 | Viewed by 368 | 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 353 | Submission Open

Keywords: greenness; separations; solvents; materials; assessments

(This special issue belongs to the Section Separation Engineering)

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 296 | 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 249 | 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 242 | 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 15585 | 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 3191 | 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 899 | 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 | 1 articles | Viewed by 614 | 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 8574 | 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 6715 | 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 3408 | 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 2088 | 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)

Numerical Modeling and Computation in Separation and Adsorption

edited by Hao Wu

submission deadline 10 Jul 2026 | 3 articles | Viewed by 1655 | 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)

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 1521 | 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 | 2 articles | Viewed by 1276 | 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)

Research on Metal Resource Recycling and Efficient Extraction Technologies

edited by Qiongqiong He and Keji Wan

submission deadline 10 Jul 2026 | 1 articles | Viewed by 827 | 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)

Method Development and Validation for Chromatographic Analysis in Complex Matrices

edited by

Marek Studziński

and Malinowska Irena

submission deadline 10 Jul 2026 | Viewed by 217 | 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 212 | 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)

Preparation and Application of Carbon-Based Materials in Pollutant Removal

edited by

Shangyi Li

submission deadline 10 Jul 2026 | Viewed by 178 | 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 5825 | 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 4371 | 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 2401 | 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 1064 | 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 322 | 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 249 | 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 176 | 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 8084 | 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 3721 | 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 3383 | 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 235 | 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)

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