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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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Graphene-Based Nanocomposites for Efficient Remediation of Emerging Organic Pollutants (EOPs) and Heavy Metals Contaminated Water

edited by

Fisseha Andualem Bezza

and

Evans Martin Nkhalambayausi Chirwa

submission deadline 10 Nov 2025 | Viewed by 54 | 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

edited by

Younes Dehmani

and

Hamou Moussout

submission deadline 15 Nov 2025 | Viewed by 597 | 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

edited by

Muhammad Ahsan Iqbal

and

Valter Maurino

submission deadline 20 Nov 2025 | 1 articles | Viewed by 1050 | 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)

Application of Nanoparticles in Selective Separation and Extraction

edited by

Alejandro Pérez-Larios

submission deadline 20 Nov 2025 | Viewed by 225 | 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)

Applications of Adsorbent Materials in Water and Wastewater Treatment

edited by Dragana Živojinović

submission deadline 20 Nov 2025 | Viewed by 84 | 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)

Extraction and Pharmaceutical Application of Phytochemicals

edited by

Aislan Cristina Rheder Fagundes Pascoal

and

Ana Lucia Tasca Gois Ruiz

submission deadline 20 Nov 2025 | Viewed by 73 | 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 72 | 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

Leilei Xiang

and Hongjie Sheng

submission deadline 20 Nov 2025 | Viewed by 50 | 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

Bojana Marković

submission deadline 30 Nov 2025 | 1 articles | Viewed by 1030 | 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)

Novel Functional Separation Materials for Water Treatment

edited by

Zhujian Huang

and

Xinjiang Hu

submission deadline 30 Nov 2025 | Viewed by 60 | 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 | 4 articles | Viewed by 2961 | 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 2056 | 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)

Removal of Organic Pollutants from Aqueous Systems

edited by Li Yan

submission deadline 10 Dec 2025 | 1 articles | Viewed by 1532 | 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

Xiangning Bu

submission deadline 10 Dec 2025 | 2 articles | Viewed by 1132 | 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)

Mineral Processing and Separation: Research, Innovation and Production

edited by

Jiangang Ku

submission deadline 10 Dec 2025 | 1 articles | Viewed by 837 | Submission Open

Keywords: magnetic separation; flotation; gravity separation; electric separation; separation modeling; ore purification

(This special issue belongs to the Section Separation Engineering)

Advances in Biochar-Mediated Nitrogen and Phosphorus Removal from Water

edited by

Chaoxu Wang

submission deadline 10 Dec 2025 | Viewed by 64 | 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)

Development of Functionalized Porous Materials for Adsorption and Separations

edited by Thomas J. Robshaw and

Ewa Szatyłowicz

submission deadline 10 Dec 2025 | Viewed by 63 | 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)

Recovery of Precious Metals and Metal Nanoparticles from Electronic and Industrial Waste

edited by

Dimosthenis Giokas

and

Manolis Manos

submission deadline 10 Dec 2025 | Viewed by 56 | 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)

Recent Advances in Adsorbent for Environmental Purification

edited by

Miljana Mirković

submission deadline 10 Dec 2025 | Viewed by 34 | 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

edited by

Anamaria Pop

and

Gheorghe Martău

submission deadline 20 Dec 2025 | 1 articles | Viewed by 1333 | Submission Open

Keywords: nutraceuticals; plant-based foods; extraction methods; isolation techniques; green technologies; bioavailability; solvent extraction; supercritical fluid extraction; functional foods; sustainable processes

Nutraceuticals from Natural Products: Innovative Extraction Techniques and Their Phytochemical Properties

edited by

Adrian Vasile Timar

, Anca Becze and

Dorina Simedru

submission deadline 20 Dec 2025 | Viewed by 565 | 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

Hideo Maruyama

submission deadline 20 Dec 2025 | Viewed by 458 | 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 218 | 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

Hangzhen Lan

and Peipei Qi

submission deadline 20 Dec 2025 | Viewed by 145 | Submission Open

Keywords: food; sample preparation; selective extraction; chromatography; mass spectrometry; computational modeling; machine learning

Leaching, Flotation, and Separation Technologies for Sustainable Metal Recovery

edited by Yuandong Liu

submission deadline 20 Dec 2025 | Viewed by 106 | 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)

Separation Technology in Mineral Processing

edited by

Ruxia Chen

and Zeyu Feng

submission deadline 20 Dec 2025 | Viewed by 87 | Submission Open

Keywords: dewatering; flocculation; flotation; selective aggregation; water recycling; bubble– particle interactions; reagents

(This special issue belongs to the Section Separation Engineering)

Application of Green Flotation Technology in Mineral Processing

edited by Wenli Liu and Qiming Zhuo

submission deadline 20 Dec 2025 | Viewed by 86 | 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)

Application of Adsorption and Separation Technologies in Water Treatment

edited by Jelena Mitrović,

Nena Velinov

and

Miljana Radović Vučić

submission deadline 20 Dec 2025 | Viewed by 65 | Submission Open

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

(This special issue belongs to the Section Environmental Separations)

Isolation, Purification and Identification of Active Peptides

edited by Fei Gao and

Han Tao

submission deadline 20 Dec 2025 | Viewed by 38 | 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)

Engineering the Loop: Advancing Wastewater Treatment and Sludge Valorization Through Innovative Separation Materials

edited by

Anita Leovac Maćerak

and

Djurdja V. Kerkez

submission deadline 20 Dec 2025 | Viewed by 36 | 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)

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 1655 | 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)

Chromatographic Analysis of Biomarkers

edited by Mark Woollam and

Mangilal Agarwal

submission deadline 31 Dec 2025 | 1 articles | Viewed by 1461 | Submission Open

Keywords: chromatography; biomarkers; diagnostics; prognostics; clinical validation; method development; data analysis; chemometrics

(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 Dec 2025 | 1 articles | Viewed by 464 | 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)

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

edited by

Mikel Añibarro-Ortega

and

José Pinela

submission deadline 31 Dec 2025 | Viewed by 351 | 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)

Separation Technology in Chemical Engineering

edited by Ming Xia

submission deadline 31 Dec 2025 | Viewed by 252 | Submission Open

Keywords: high-COD organic waste water; pre-treatment; unit operation; energy-efficient

(This special issue belongs to the Section Environmental Separations)

Innovative Analytical Strategies Based on Mass Spectrometry in Food Analysis

edited by

Lucia Bartella

submission deadline 31 Dec 2025 | Viewed by 103 | 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)

Novel Green Solvents for the Separation and Purification of Valuable Natural Ingredients

edited by

Liangliang Liu

submission deadline 10 Jan 2026 | 2 articles | Viewed by 1945 | 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

Hao Li

submission deadline 10 Jan 2026 | 1 articles | Viewed by 1380 | 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)

Innovative Separation Techniques for Sustainable Recycling of Solid Waste

edited by

Yuanpeng Fu

and Zhen Shang

submission deadline 10 Jan 2026 | Viewed by 133 | 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)

Extraction, Purification and Functional Substances of Natural Products and Plants

edited by

Xiumei Li

submission deadline 10 Jan 2026 | Viewed by 56 | 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)

Recent Advances in Lithium Extraction

edited by Shiai Xu and Qiuyan Bi

submission deadline 10 Jan 2026 | Viewed by 48 | Submission Open

Keywords: lithium; extraction; adsorption; membrane separation; salt lake; seawater; separation; purification

(This special issue belongs to the Section Purification Technology)

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 Jan 2026 | Viewed by 39 | 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)

Development of Materials for Separation and Analysis Applications

edited by

Israel S. Ibarra

submission deadline 20 Jan 2026 | 3 articles | Viewed by 4056 | 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 241 | 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 33 | 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 26 | Submission Open

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

(This special issue belongs to the Section Chromatographic Separations)

Adsorption Methods for Environmental Purification

edited by

Souad El Hajjaji

and Najoua Labjar

submission deadline 10 Feb 2026 | Viewed by 969 | Submission Open

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

(This special issue belongs to the Section Environmental Separations)

Sustainable and Intelligent Process Control of Pollutant Separation and Purification

edited by Nuan Yang and

Bing Yang

submission deadline 10 Feb 2026 | Viewed by 47 | 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)

Application of Chromatography in Bioactive Compound Analysis

edited by

Milan N. Mitić

, Vesna Stankov-Jovanovic and Jelena S. Nikolić

submission deadline 10 Feb 2026 | Viewed by 15 | 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 7062 | 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)

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