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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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Novel Functional Separation Materials for Water Treatment

edited by

Zhujian Huang

and

Xinjiang Hu

submission deadline 20 Mar 2027 | 1 articles | Viewed by 1152 | 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)

Research on Separation Techniques for Metabolomics and Pharmacokinetics Analysis

edited by

Mamunur Rashid

submission deadline 20 Mar 2027 | Viewed by 485 | 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 Advanced Separation Science in Biomedical Research and Clinical Applications)

Method Development and Validation for Chromatographic Analysis in Complex Matrices

edited by

Marek Studziński

and Malinowska Irena

submission deadline 20 Mar 2027 | Viewed by 371 | Submission Open

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

(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 Mar 2027 | Viewed by 362 | 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)

Analytical Methods for Nitrosamines and NDSRIs in Pharmaceuticals

edited by

Yiannis Sarigiannis

and Georgios N. Rallis

submission deadline 20 Mar 2027 | Viewed by 187 | Submission Open

Keywords: nitrosamines; NDSRIs; LC-MS/MS; GC-MS/MS; HRMS; pharmaceutical analysis; impurity profiling; method validation; AQbD

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

Removal Methods for Emerging Contaminants in Wastewater

edited by

Banghai Liu

and Minda Yu

submission deadline 20 Mar 2027 | Viewed by 68 | Submission Open

Keywords: emerging contaminants; advanced oxidation processes (AOPs); wastewater treatment; soil and groundwater remediation; in situ chemical oxidation (ISCO); photocatalysis; adsorption

(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 Mar 2027 | Viewed by 351 | 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)

Separation Technologies for Solid Waste Treatment and Recycling

edited by Ying Huang

submission deadline 31 Mar 2027 | Viewed by 86 | Submission Open

Keywords: solid waste; sludge; recycling; rare metals; crude oil; separation techniques

(This special issue belongs to the Section Separation Engineering)

Key Metal Enrichment, Extraction, Separation and High-Purity Preparation

edited by

Chunlin He

, Wenhan Sun and Wentao Zhou

submission deadline 10 Apr 2027 | 1 articles | Viewed by 407 | Submission Open

Keywords: critical metals; high-purity refining; solid waste recycling; e-waste; adsorption; solvent extraction

(This special issue belongs to the Section Separation Engineering)

Green Separation Chemistry and Technique for Rare Earth Elements

edited by

Hongmin Cui

submission deadline 10 Apr 2027 | Viewed by 300 | 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)

Advanced Gel Materials for High-Efficiency Separation Processes: Mechanisms and Applications

edited by

Hongbo Gu

Ai Du

and Huige Wei

submission deadline 10 Apr 2027 | Viewed by 60 | Submission Open

Keywords: hydrogel; aerogel; oil separation; ion separation; mechanism

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

Multiphase Flow Separation Process

edited by

Jianfei Song

and

Shuyue Li

submission deadline 10 Apr 2027 | Viewed by 40 | Submission Open

Keywords: multiphase flow separation; equipment design and optimization; computational fluid dynamics (CFD) modeling; droplet/particle dynamics and deposition; process intensification

(This special issue belongs to the Section Separation Engineering)

Reverse Osmosis Membrane Fouling Control

edited by Bingdi Cao and

Tingting Liu

submission deadline 10 Apr 2027 | Viewed by 25 | Submission Open

Keywords: membrane fouling mitigation; biofouling control; inorganic scaling; silica fouling; surface anti-fouling modification

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

Innovative Adsorption Materials and Extraction Technology for Food Sample Detection

edited by

Hangzhen Lan

and Peipei Qi

submission deadline 20 Apr 2027 | 2 articles | Viewed by 5208 | Submission Open

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

New Techniques for Extraction and Removal of Pesticide Residues

edited by Zhonghua Yang

submission deadline 20 Apr 2027 | 4 articles | Viewed by 5117 | 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)

Application of Green Flotation Technology in Mineral Processing

edited by Wenli Liu and Qiming Zhuo

submission deadline 20 Apr 2027 | 2 articles | Viewed by 3498 | 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)

Efficient Separation, Purification and Recycling of Mineral Resources

edited by Yuanlin Chen,

Cheng Liu

, Jianhua Kang,

Guanfei Zhao

and Yingchao Liu

submission deadline 20 Apr 2027 | 1 articles | Viewed by 163 | Submission Open

Keywords: mineral resources; separation; extraction; resource recycling; clean technology

(This special issue belongs to the Section Separation Engineering)

Recent Advances in the Separation and Recovery of Critical Energy Metals from Secondary Resources

edited by

Dong Wang

and Liangxing Jiang

submission deadline 20 Apr 2027 | 1 articles | Viewed by 70 | Submission Open

Keywords: critical energy metals; new-energy solid wastes; lithium-ion battery recycling; rare-earth permanent magnet recycling; photovoltaic waste; silicon waste recycling; solvent extraction; ion exchange and adsorption; membrane and electrochemical separation; green hydrometallurgy

(This special issue belongs to the Section Separation Engineering)

Advanced Functional Materials for Gas Adsorption and Separation

edited by

Zhiyong Xu

and Wenbo Zhao

submission deadline 20 Apr 2027 | Viewed by 46 | Submission Open

Keywords: adsorption separation; membrane separation; absorption; ionic liquids; nano-porous materials; porous organic polymers; porous liquids; metal–organic framework materials; covalent organic frameworks

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

Advanced Oxidation Processes (AOPs) in Water Pollution Control

edited by Yunjin Yao

submission deadline 20 Apr 2027 | Viewed by 36 | Submission Open

Keywords: advanced oxidation processes; water pollution control; emerging contaminants; persulfate activation; periodate oxidation; photocatalysis; electrochemical oxidation; catalytic ozonation; non-radical oxidation; continuous-flow treatment

(This special issue belongs to the Section Separation Engineering)

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

edited by

Rossella Barone

and Jennifer Pascali

submission deadline 30 Apr 2027 | Viewed by 359 | Submission Open

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

(This special issue belongs to the Section Chromatographic Separations)

Utilization and Adsorbent for Efficient Separation of Ions for Salt Lake Brines

edited by Sen Lin, Jun Chen and Hao Jiang

submission deadline 30 Apr 2027 | Viewed by 153 | Submission Open

Keywords: salt lake brines; adsorption technology; functional adsorbents; ion separation; resource extraction

(This special issue belongs to the Section Separation Engineering)

Advanced Purification Technologies for Bioactive Natural Products

edited by

Ki Hyun Kim

submission deadline 30 Apr 2027 | Viewed by 24 | Submission Open

Keywords: bioactive natural products; purification technologies; preparative chromatography; LC–MS-guided purification; metabolomics; bioassay-guided fractionation; sustainable separation

(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 May 2027 | 2 articles | Viewed by 3285 | 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)

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

edited by Haisheng Li

submission deadline 10 May 2027 | 1 articles | Viewed by 994 | 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)

Advanced Materials for Heavy Metal Adsorption in Wastewater Treatment

edited by Jiahui Zhu and Huiquan Gu

submission deadline 10 May 2027 | 1 articles | Viewed by 868 | 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: Second Edition

edited by

Xiumei Li

submission deadline 10 May 2027 | Viewed by 22 | 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)

Advanced Bioremediation Technologies for Wastewater Purification

edited by Qi Zhou and

Wangmi Chen

submission deadline 10 May 2027 | Viewed by 15 | Submission Open

Keywords: bioremediation; wastewater treatment; biological nitrogen and phosphorus removal; emerging contaminants; bio-nano hybrids; microbial electrochemical systems; synthetic biology; enzyme immobilization; process optimization; metagenomics

(This special issue belongs to the Section Environmental Separations)

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 May 2027 | Viewed by 285 | 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)

Electro- and Liquid-Phase Separation Techniques

edited by Jialiang Guo

submission deadline 30 Jun 2027 | Viewed by 2 | Submission Open

Keywords: HPLC; electro- and liquid-phase separation; UHPLC; LC-MS; capillary electrophoresis

(This special issue belongs to the Section Purification Technology)

Development of Novel Porous Adsorbent Materials for Pollutant Removal

edited by Wei Wang,

Chengdu Qi

and Lijuan Qi

submission deadline 30 Dec 2027 | Viewed by 218 | Submission Open

Keywords: adsorption; environmental pollutants; emerging contaminants; DFT calculation; adsorption mechanism; molecular dynamics simulation

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

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