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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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Development of Materials for Separation and Analysis Applications

edited by

Israel S. Ibarra

submission deadline 20 Jan 2026 | 3 articles | Viewed by 5127 | Submission Open

Keywords: material chemistry; separation science; polymers; analytical techniques; sample treatment; food and environmental samples

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

Advanced Polymer Materials for Membrane Separation

edited by Zhisheng Fu and

Chuanjie Fang

submission deadline 20 Jan 2026 | Viewed by 350 | Submission Open

Keywords: polymer; membrane separation technology; energy conservation; water resource; environment protection; human health; gas separation; water treatment; organic solvent separation; ion exchange/transport; two-dimensional polymer nanosheets; mixed matrix membranes; polymer metal– organic framework nanoparticles; organic solvent separation membranes; porous organic polymers

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

Advanced Membrane Separation Technology for Complex Water/Wastewater Treatment

edited by Lin Shi and Fang Li

submission deadline 20 Jan 2026 | Viewed by 113 | Submission Open

Keywords: membrane separation; water; wastewater; resource recovery; fouling; scaling; emerging contaminants; process modeling

(This special issue belongs to the Section Purification Technology)

Advances in Chromatographic Separation Techniques for the Analysis of Drugs of Abuse

edited by

Rossella Barone

and Jennifer Pascali

submission deadline 20 Jan 2026 | Viewed by 108 | Submission Open

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

(This special issue belongs to the Section Chromatographic Separations)

Sustainable and Intelligent Process Control of Pollutant Separation and Purification

edited by Nuan Yang and

Bing Yang

submission deadline 10 Feb 2026 | 2 articles | Viewed by 1786 | Submission Open

Keywords: antibiotic degradation; artificial intelligence; biological purification technology; ecological toxicology; environmental catalyst; low-carbon pathway; microbe– environment interactions; new emerging pollutants; pollutant purification; soil remediation; waste treatment

(This special issue belongs to the Section Purification Technology)

Adsorption Methods for Environmental Purification

edited by

Souad El Hajjaji

and Najoua Labjar

submission deadline 10 Feb 2026 | 1 articles | Viewed by 1609 | Submission Open

Keywords: adsorption; pollutant removal; eco-friendly materials; nanostructured materials; adsorption mechanisms; kinetics

(This special issue belongs to the Section Environmental Separations)

Optimization of Advanced Separation Technologies for the Analysis of Emerging Contaminants

edited by

Barbara Benedetti

and

Caterina Durante

submission deadline 10 Feb 2026 | 1 articles | Viewed by 1293 | Submission Open

Keywords: emerging contaminants; water; food contamination; design of experiments; multivariate analysis; gas chromatography; liquid chromatography; low- and high-resolution mass spectrometry; sample preparation

Application of Chromatography in Bioactive Compound Analysis

edited by

Milan N. Mitić

, Vesna Stankov-Jovanovic and Jelena S. Nikolić

submission deadline 10 Feb 2026 | 1 articles | Viewed by 731 | 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)

Materials from Biomass and Waste for Adsorption Applications

edited by

Marija M. Vukčević

submission deadline 15 Feb 2026 | 5 articles | Viewed by 10926 | 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)

Advanced Materials for Heavy Metal Adsorption in Wastewater Treatment

edited by Jiahui Zhu and Huiquan Gu

submission deadline 20 Feb 2026 | Viewed by 153 | Submission Open

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

(This special issue belongs to the Section Separation Engineering)

Advanced Functional Materials and Membranes for Water Treatment

edited by

Hongbo Du

and Li Yan

submission deadline 20 Feb 2026 | Viewed by 77 | Submission Open

Keywords: microfiltration; ultrafiltration; nanofiltration; forward osmosis; reverse osmosis; membrane distillation; ceramic membrane; membrane bioreactor

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

Separation Technology for Metal Extraction and Removal

edited by Minhua Su, Changzhong Liao and Jinfeng Tang

submission deadline 10 Mar 2026 | 6 articles | Viewed by 8435 | Submission Open

Keywords: metal extraction; toxic metal/nuclides removal; waste-to-resources; water purification; process development; material development and application

(This special issue belongs to the Section Purification Technology)

Recent Advances in Gas Separation and Purification

edited by

Xiong Yang

submission deadline 10 Mar 2026 | 3 articles | Viewed by 4126 | Submission Open

Keywords: adsorption; absorption; membrane; catalysis; gas separation; gas purification; zeolite; active carbon; catalyst; PSA; TSA

(This special issue belongs to the Section Separation Engineering)

Efficient Extraction, Separation and Purification of Critical Metal Resources

edited by Meng Li, Ying Zhang,

Zepeng Lv

, Fanfan Zhang and Yun Liu

submission deadline 10 Mar 2026 | 3 articles | Viewed by 1507 | Submission Open

Keywords: critical metals; extraction; separation; purification; resource recycling; carbon reduction

Advances in Photocatalysis for Environmental Pollutant Removal

edited by

Feigao Xu

submission deadline 10 Mar 2026 | 1 articles | Viewed by 1111 | Submission Open

Keywords: photocatalysts; semiconductors; microstructure regulation; environmental pollutants; degradation; Fenton

(This special issue belongs to the Section Environmental Separations)

Current Status and Prospects of Environmentally Friendly Sludge Dewatering, Solidification and Stabilization Technology

edited by

Boran Wu

, Binqi Rao and

Houfeng Wang

submission deadline 10 Mar 2026 | 1 articles | Viewed by 882 | Submission Open

Keywords: sewage sludge; hazardous waste; dewatering; solidification; stabilization

(This special issue belongs to the Section Separation Engineering)

Advanced Separation Media and Technologies for Biomolecules

edited by

Jianbo Qu

submission deadline 10 Mar 2026 | Viewed by 150 | Submission Open

Keywords: separation media; protein separation; antibody separation; nucleic acid separation; exosome isolation; virus-like particles; separation methods; liquid chromatography; solid-phase extraction; modelling

Functional Materials in Adsorption and Separation

edited by

Hui Li

submission deadline 10 Mar 2026 | Viewed by 45 | Submission Open

Keywords: adsorption; separation; functional materials; air purification; porous materials; environmental remediation; gas separation; water treatment

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

Separation and Remediation of Environmental Pollutants Using Functional Materials

edited by Weichuan Qiao and

Ming Zhang

submission deadline 15 Mar 2026 | Viewed by 129 | Submission Open

Keywords: catalytic oxidation; catalytic reduction; purification; degradation; functional materials

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

Sustainable Biological Removal and Separation Processes in Wastewater Treatment

edited by

Xin Zhou

Shouqing Ni

and Guoqiang Liu

submission deadline 20 Mar 2026 | 3 articles | Viewed by 2575 | Submission Open

Keywords: wastewater treatment and reclamation; biological nutrient removal; separation and purification; emerging pollutant removal; carbon footprint mitigation; resource recovery

(This special issue belongs to the Section Environmental Separations)

Green Extraction Techniques for Bioactive Products from Natural Sources

edited by Katja Zocher, Nadia Boussetta and Christian Gusbeth

submission deadline 20 Mar 2026 | 1 articles | Viewed by 547 | Submission Open

Keywords: extraction; disruption; cell wall; solvent-free; sustainability; bioeconomy; natural products; metabolites; physical methods; microorganisms

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

Recognition Materials and Separation Applications

edited by Shucheng Liu

submission deadline 20 Mar 2026 | 1 articles | Viewed by 516 | Submission Open

Keywords: extraction; molecular recognition; purification; sensors; adsorption; catalysis

(This special issue belongs to the Section Separation Engineering)

Recent Developments in Chemical Analysis of Bioactive Constituents of Plants and Plant Extracts

edited by

Constantinos Tsiafoulis

submission deadline 20 Mar 2026 | Viewed by 291 | Submission Open

Keywords: plant extract; bioactive constituents; food chemistry; method development; magnetic resonance spectroscopy; mass spectrometry; natural products

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

Removal of Emerging Pollutants from the Environmental Matrices

edited by

Waldemar Studziński

and

Maciej Przybyłek

submission deadline 20 Mar 2026 | Viewed by 286 | Submission Open

Keywords: emerging pollutants (EPs); transformation products; wastewater treatment; micropollutants; toxicity; environmental protection; removal; sorption; separation

(This special issue belongs to the Section Environmental Separations)

Research on Novel Separation Media and Separation/Analysis Technologies

edited by Qiongwei Yu and

Di Chen

submission deadline 20 Mar 2026 | Viewed by 188 | Submission Open

Keywords: gas phase chromatography; liquid phase chromatography; supercritical fluid chromatography; separation; purification; adsorption; identification; solid-phase extraction; liquid-phase extraction; derivatization

(This special issue belongs to the Section Separation Engineering)

Advanced Oxidation Processes (AOPs) for Resource Recovery and Disinfection Byproduct Control

edited by

Jiaming Zhang

submission deadline 20 Mar 2026 | Viewed by 166 | Submission Open

Keywords: heavy metal recovery; seawater hydrogen production; nitrogenous disinfection byproducts; halogenated disinfection byproducts; in situ groundwater treatment; ozone oxidation; photocatalytic oxidation; UV activation; catalytic membrane; electrochemical oxidation

(This special issue belongs to the Section Separation Engineering)

Advanced Separation Membranes in Environmental and Energy Fields

edited by

Asad Asad

and

Pooria Karami

submission deadline 20 Mar 2026 | Viewed by 75 | Submission Open

Keywords: membrane separation; advanced membrane materials; surface modification; membrane fabrication; wastewater treatment; hybrid membrane systems; membrane characterization

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

Extraction and Characterization of Food Components

edited by

Bárbara Elisabeth Teixeira Costa

submission deadline 31 Mar 2026 | 3 articles | Viewed by 5574 | Submission Open

Keywords: extraction; green extraction methods; optimization; bioactive compounds; nutrients; antioxidants; food matrix; food by-products; lipid extraction; characterization

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

Recent Advances in Rare Earth Separation and Extraction

edited by

Junlian Wang

and Na Sui

submission deadline 31 Mar 2026 | 4 articles | Viewed by 3683 | Submission Open

Keywords: rare earths; solvent extraction; separation technology; extraction chromatography; recovery; low concentration enrichment; adsorption; calculations

(This special issue belongs to the Section Separation Engineering)

Novel Solvents and Methods in Distillation Process

edited by Qunsheng Li

submission deadline 31 Mar 2026 | 2 articles | Viewed by 1635 | Submission Open

Keywords: extractive distillation; distillation simulation; CFD simulation; Aspen simulation; mass transfer and separation; phase equilibrium research

(This special issue belongs to the Section Separation Engineering)

Selected Papers from the 29th International Symposium on Separation Sciences (ISSS 2025)

edited by

Živoslav Lj. Tešić

Branka Ivković

and

Milica Kalaba

submission deadline 31 Mar 2026 | Viewed by 219 | Submission Open

Keywords: chromatography; sample preparation techniques; environmental analysis; food analysis; pharmaceutical analysis; clinical analysis; forensic analysis; natural product analysis; industrial analysis; chemometrics

Selected Papers from the 1st International Online Conference on Separations (IOCS2025)

edited by

Grzegorz Boczkaj

submission deadline 31 Mar 2026 | Viewed by 201 | Submission Open

Keywords: green sample preparation; green solvents; chromatographic analysis; liquid chromatography; separation engineering; supercritical fluid; water treatment; resource recovery; membrane; adsorption

Photo-/Electro-/Photoelectro-Catalytic Removal of Pollutants in Environmental Matrices

edited by

Junzhuo Cai

submission deadline 4 Apr 2026 | Viewed by 116 | Submission Open

Keywords: photoelectrocatalysis; emerging pollutants; heterogeneous catalyst; flow-through reactor; capacitive deionization; advanced oxidation processes; photoelectrocatlytic oxidation/reduction; electro-sorption; photo-/electro-/photoelectro-sensors

(This special issue belongs to the Section Environmental Separations)

Research on New Technology and Equipment of Multiphase Flow Separation

edited by Chencan Du and

Yubin Wang

submission deadline 10 Apr 2026 | 4 articles | Viewed by 9785 | 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)

Novel Solvents and Methods for Extraction of Chemicals

edited by Silvia Fraterrigo Garofalo and Giuseppe Pipitone

submission deadline 10 Apr 2026 | 4 articles | Viewed by 7484 | Submission Open

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

(This special issue belongs to the Section Separation Engineering)

Sample Preparation and Chromatographic Analysis of Environmental Samples

edited by Rosangela Elliani and

Antonio Tagarelli

submission deadline 10 Apr 2026 | 3 articles | Viewed by 4437 | Submission Open

Keywords: assessment of several organic compounds; chromatography analysis; analytical parameters; multivariate optimization; sample extraction; enviromentally friendly analytical methods

(This special issue belongs to the Section Chromatographic Separations)

Research Progress of Gas–Solid Fluidized Dry Separation

edited by Chenyang Zhou

submission deadline 10 Apr 2026 | 3 articles | Viewed by 3861 | Submission Open

Keywords: gas-solid fluidized bed; bubble behavior; gas– solid fluidization simulation; dry coal separation; two-phase theory; bed density stability

(This special issue belongs to the Section Separation Engineering)

Design and Preparation of Environmental Functional Materials for Pollutant Removal

edited by Yujun Zhou and Jianfei Li

submission deadline 10 Apr 2026 | 1 articles | Viewed by 2560 | Submission Open

Keywords: wastewater treatment; membrane separation; electrochemical technology; adsorption; resource recovery; electrodes and reactor design; wastewater treatment

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

Removal of Environmental Pollutants and Bioremediation Strategies

edited by

Xinlin Zhao

and

Shuaishuai Gao

submission deadline 10 Apr 2026 | 1 articles | Viewed by 742 | Submission Open

Keywords: environmental pollutants; pollutant fate and transport; contaminant degradation; microbial remediation; phytoremediation; heavy metal; organic pollutant; bioremediation; eco-toxicological risk assessment

Innovative Strategies for Efficient Heavy Metal Removal in Water

edited by

Chengbin Liu

and Huiling Liu

submission deadline 10 Apr 2026 | Viewed by 284 | Submission Open

Keywords: heavy metal removal; next-generation adsorbents; membrane technologies; hybrid separation processes; resource recovery; AI-driven process

(This special issue belongs to the Section Environmental Separations)

Absorption, Adsorption Technologies and Materials of Industrial Exhaust

edited by Zhi Qian, Le Sang and

Guojie Zhang

submission deadline 10 Apr 2026 | Viewed by 232 | Submission Open

Keywords: adsorption; material; process intensification; industrial exhaust; multiple pollutants; optimization; interdisciplinary; synergy; cutting-edge

(This special issue belongs to the Section Environmental Separations)

Photoelectrocatalytic Organic Pollutant Degradation and Water Splitting

edited by Xingming Ning

submission deadline 10 Apr 2026 | Viewed by 116 | Submission Open

Keywords: interface charge transfer; organic pollutant degradation; photoelectrocatalytic; photogenerated charge carrier; charge separation; water splitting

(This special issue belongs to the Section Environmental Separations)

Advancements in Biochar and Activated Carbon for Efficient Water Treatment and Pollutant Adsorption

edited by

Jie Yuan

and Zedong Lu

submission deadline 15 Apr 2026 | Viewed by 44 | Submission Open

Keywords: biochar; activated carbon; water treatment; adsorption; sustainable adsorbent

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

Design and Preparation of Sustainable Separation Membrane for Efficient Water Purification

edited by

Shuping Wu

and

Rui Zhao

submission deadline 20 Apr 2026 | 4 articles | Viewed by 9310 | Submission Open

Keywords: membrane separation; water purification; sustainable materials; membrane fabrication; membrane characterization; desalination; wastewater treatment; bio-based membranes; carbon-based membranes; membrane fouling

(This special issue belongs to the Section Environmental Separations)

Membrane Separation Process for Water Treatment

edited by Fang Li

submission deadline 20 Apr 2026 | 1 articles | Viewed by 917 | Submission Open

Keywords: advanced separation techniques; resource recovery; environmental conservation; water treatment; membrane separation process

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

Photocatalytic Oxidation and Advanced Oxidation Processes for Sustainable Water Treatment

edited by

Haojie Zhang

Hanxuan Zeng

and Yi Duan

submission deadline 20 Apr 2026 | 1 articles | Viewed by 602 | Submission Open

Keywords: advanced oxidation processes (AOPs); photocatalysis; emerging contaminants; reactive oxygen species (ROS); degradation pathways; water and wastewater treatment

(This special issue belongs to the Section Separation Engineering)

Electrochemical Separation and Recovery Technology in Wastewater Treatment

edited by

Ran Mao

submission deadline 20 Apr 2026 | Viewed by 221 | Submission Open

Keywords: electrochemical wastewater treatment; resource recovery; electrooxidation; electroreduction; heavy metal complexes; nitrate; phosphorus; electro-Fenton

(This special issue belongs to the Section Environmental Separations)

Advances in Gas–Solid Separation for Solid Waste Recovery

edited by Yuanhe Yue

submission deadline 20 Apr 2026 | Viewed by 56 | Submission Open

Keywords: gas– solid separation; solid waste; resource recovery; dust removal technology; circular economy; pollution control

(This special issue belongs to the Section Separation Engineering)

Advanced Separation Technology for Nutrient Removal and Recovery

edited by

Lei Li

and Hui Xu

submission deadline 30 Apr 2026 | Viewed by 56 | Submission Open

Keywords: nutrient recovery; wastewater treatment; membrane separation; struvite crystallization; adsorption; ion exchange; electrochemical methods; solid waste; life cycle assessment; circular economy

(This special issue belongs to the Section Environmental Separations)

Determination and Quantification of Pharmaceuticals Using Chromatography Methods

edited by

Karol Wróblewski

and

Małgorzata Szultka-Młyńska

submission deadline 10 May 2026 | 1 articles | Viewed by 1597 | Submission Open

Keywords: chromatography; method validation; drug analysis; pharmaceutical analysis; analytical method development; pharmaceutical formulations; mass spectrometry

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

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