1. “From Waste to Wealth: A Circular Economy Approach to the Sustainable Recovery of Rare Earth Elements and Battery Metals from Mine Tailings”
by Mohammed Omar Sahed Chowdhury and Deniz Talan
Separations 2025, 12(2), 52; https://doi.org/10.3390/separations12020052
Available online: https://www.mdpi.com/2297-8739/12/2/52

2. “A Review of Hydrogel Application in Wastewater Purification”
by Lilyan Alsaka, Lina Alsaka, Ali Altaee, Syed Javaid Zaidi, John Zhou and John Zhou
Separations 2025, 12(2), 51; https://doi.org/10.3390/separations12020051
Available online: https://www.mdpi.com/2297-8739/12/2/51

3. “Detection of Honey Adulteration by Liquid Chromatography—High-Resolution Mass Spectrometry: Results from an EU Coordinated Action”
by Viviana Paiano, Andreas Breidbach, Carolin Lörchner, Tereza Ždiniaková, Olivier De Rudder, Alain Maquet, Lourdes Alvarellos and Franz Ulberth
Separations 2025, 12(2), 47; https://doi.org/10.3390/separations12020047
Available online: https://www.mdpi.com/2297-8739/12/2/47

4. “Sustainable and Efficient Wastewater Treatment Using Cellulose-Based Hydrogels: A Review of Heavy Metal, Dye, and Micropollutant Removal Applications”
by Ziao Zhang, Yujie Lu, Shoujian Gao and Shuping Wu
Separations 2025, 12(3), 72; https://doi.org/10.3390/separations12030072
Available online: https://www.mdpi.com/2297-8739/12/3/72

5. “Production of Algae-Derived Biochar and Its Application in Pollutants Adsorption—A Mini Review”
by Luyang Li, Jinfeng Wang, Weiming Sun, Xinhong Peng and Xinhua Qi
Separations 2025, 12(2), 32; https://doi.org/10.3390/separations12020032
Available online: https://www.mdpi.com/2297-8739/12/2/32

6. “Plant Sample Preparation for Metabolomics, Lipidomics, Ionomics, Fluxomics, and Peptidomics”
by Walace Breno da Silva, Gabriel Felipe Hispagnol, Emanuel Victor dos Santos Nunes, Ian Castro-Gamboa and Alan Cesar Pilon
Separations 2025, 12(2), 21; https://doi.org/10.3390/separations12020021
Available online: https://www.mdpi.com/2297-8739/12/2/21

7. “Investigation of Impurities in Peptide Pools”
by Gaby Bosc-Bierne and Michael G. Weller
Separations 2025, 12(2), 36; https://doi.org/10.3390/separations12020036
Available online: https://www.mdpi.com/2297-8739/12/2/36

8. “Research Progress in Tritium Processing Technologies: A Review”
by Ziqian Zhao, Yandong Sun, Qi Chen, Tianchi Li, Fang Liu, Taihong Yan and Weifang Zheng
Separations 2025, 12(2), 33; https://doi.org/10.3390/separations12020033
Available online: https://www.mdpi.com/2297-8739/12/2/33

9. “Current Perspectives on the Extraction, Isolation, and Identification of Fats and Fatty Acids Using Conventional and Green Methods”
by Ytaiara Lima-Pereira, Esther Maria Oliveira de Souza, David Silva dos Reis, Ian Gardel Carvalho Barcellos-Silva, Karine Sayuri Lima Miki and Valdir F. Veiga-Júnior
Separations 2025, 12(6), 160; https://doi.org/10.3390/separations12060160
Available online: https://www.mdpi.com/2297-8739/12/6/160

10. “Polyethylene Glycol (PEG) Additive in Polymer Membranes for Carbon Dioxide Separation: A Critical Review on Performances and Correlation with Membrane Structure”
by Riccardo Checchetto
Separations 2025, 12(3), 71; https://doi.org/10.3390/separations12030071
Available online: https://www.mdpi.com/2297-8739/12/3/71