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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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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 93 | 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)

Natural Product Separation and Characterization of Bioactive Plant Compounds

edited by Maria Luiza Zeraik

submission deadline 30 May 2026 | Viewed by 71 | 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 5484 | 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 731 | Submission Open

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

(This special issue belongs to the Section Environmental Separations)

Solid Waste Recycling and Strategic Metal Extraction

edited by

Lihui Gao

Daoguang Teng

Shulei Li

and Chunlin He

submission deadline 10 Jun 2026 | 4 articles | Viewed by 5988 | Submission Open

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

(This special issue belongs to the Section Separation Engineering)

Advanced Separation Technology for Sludge Wastewater Treatment and Resource Utilization

edited by Bingdi Cao

submission deadline 10 Jun 2026 | 1 articles | Viewed by 616 | 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)

Design and Optimization of Extraction/Separation Processes for Natural Products

edited by

Xingchu Gong

and

Guanglei Zuo

submission deadline 10 Jun 2026 | 1 articles | Viewed by 449 | 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 Advanced Oxidation Processes (AOPs) in Wastewater Treatment

edited by Hongwei Sun

submission deadline 10 Jun 2026 | Viewed by 194 | Submission Open

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

(This special issue belongs to the Section Environmental Separations)

Advances in Technologies Used for Mineral Separation

edited by Qiang Zhao and

Baoyu Cui

submission deadline 10 Jun 2026 | Viewed by 47 | 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)

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

edited by

Yan Wang

submission deadline 10 Jun 2026 | Viewed by 43 | 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 27 | 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 701 | Submission Open

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

(This special issue belongs to the Section Separation Engineering)

Green Separation and Purification Technology: Second Edition

edited by

Shun Yao

submission deadline 20 Jun 2026 | Viewed by 68 | 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 59 | 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 for Wastewater Treatment

edited by

Xiaomin Ma

and Ming Chang

submission deadline 20 Jun 2026 | Viewed by 42 | 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)

Separation Techniques in Environmental Analysis

edited by

Eliézer Quadro Oreste

and

Sergiane Souza Caldas

submission deadline 20 Jun 2026 | Viewed by 33 | 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 Ion Separation

edited by Pengjia Dou

submission deadline 20 Jun 2026 | Viewed by 18 | Submission Open

Keywords: membrane separation; ion separation; ion-selective membranes; electro-membrane processes; resource recovery; water purification; wastewater treatment; novel membrane materials; biomimetic nanochannels; ion separation mechanism

(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 54 | 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 | 3 articles | Viewed by 3154 | 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)

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 1014 | 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)

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 | 1 articles | Viewed by 942 | 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)

Environmental Functional Materials for Pollutant Separation and Remediation

edited by

Kunlun Yang

, Jian Mei,

Feilong Zhang

and Jingzhen Zhang

submission deadline 10 Jul 2026 | Viewed by 92 | 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 | Viewed by 38 | 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)

Numerical Modeling and Computation in Separation and Adsorption

edited by Hao Wu

submission deadline 10 Jul 2026 | Viewed by 30 | 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 4 | Submission Open

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

(This special issue belongs to the Section Chromatographic Separations)

Preparation and Application of Carbon-Based Materials in Pollutant Removal

edited by

Shangyi Li

submission deadline 10 Jul 2026 | Viewed by 1 | 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)

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 1899 | Submission Open

Keywords: GC-MS; GCxGC; headpsace techniques; chemometrics; volatolomic; scent sampling; aroma; thermodeorption

(This special issue belongs to the Section Chromatographic Separations)

Advances in Microbial and Enzymatic-Mediated Wastewater Purification

edited by

Lukhanyo Mekuto

submission deadline 31 Jul 2026 | Viewed by 28 | Submission Open

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

(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 16 | 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)

Extraction, Separation, and Recovery of Rare Earth Elements

edited by

Shuainan Ni

and

Zhiyuan Zeng

submission deadline 10 Sep 2026 | Viewed by 204 | 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)

Displaying special issue 101-150 on page 3 of 3.

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