1. “The Use of Microalgae and Cyanobacteria in the Improvement of Agricultural Practices: A Review on Their Biofertilising, Biostimulating and Biopesticide Roles”
by Ana L. Gonçalves
Appl. Sci. 2021, 11(2), 871; https://doi.org/10.3390/app11020871
Available online: https://www.mdpi.com/2076-3417/11/2/871

2. “A Smart and Sustainable Future for Viticulture Is Rooted in Soil: How to Face Cu Toxicity”
by Stefano Cesco, Youry Pii, Luigimaria Borruso, Guido Orzes, Paolo Lugli, Fabrizio Mazzetto, Giulio Genova, Marco Signorini, Gustavo Brunetto, Roberto Terzano et al.
Appl. Sci. 2021, 11(3), 907; https://doi.org/10.3390/app11030907
Available online: https://www.mdpi.com/2076-3417/11/3/907

3. “Digestate as Sustainable Nutrient Source for Microalgae—Challenges and Prospects”
by Lisa Bauer, Karolína Ranglová, Jiří Masojídek, Bernhard Drosg and Katharina Meixner
Appl. Sci. 2021, 11(3), 1056; https://doi.org/10.3390/app11031056
Available online: https://www.mdpi.com/2076-3417/11/3/1056

4. “Recent Advancements of UF-Based Separation for Selective Enrichment of Proteins and Bioactive Peptides—A Review”
by Enny Ratnaningsih, Reynard Reynard, Khoiruddin Khoiruddin, I Gede Wenten and Ramaraj Boopathy
Appl. Sci. 2021, 11(3), 1078; https://doi.org/10.3390/app11031078
Available online: https://www.mdpi.com/2076-3417/11/3/1078

5. “Sources and Metal Pollution of Sediments from a Coastal Area of the Central Western Adriatic Sea (Southern Marche Region, Italy)”
by Federico Spagnoli, Rocco De Marco, Enrico Dinelli, Emanuela Frapiccini, Fabrizio Frontalini and Patrizia Giordano
Appl. Sci. 2021, 11(3), 1118; https://doi.org/10.3390/app11031118
Available online: https://www.mdpi.com/2076-3417/11/3/1118

6. “Phosphogypsum Recycling: A Review of Environmental Issues, Current Trends, and Prospects”
by Yelizaveta Chernysh, Olena Yakhnenko, Viktoriia Chubur and Hynek Roubík
Appl. Sci. 2021, 11(4), 1575; https://doi.org/10.3390/app11041575
Available online: https://www.mdpi.com/2076-3417/11/4/1575

7. “Paraben Compounds—Part I: An Overview of Their Characteristics, Detection, and Impacts”
by João Lincho, Rui C. Martins and João Gomes
Appl. Sci. 2021, 11(5), 2307; https://doi.org/10.3390/app11052307
Available online: https://www.mdpi.com/2076-3417/11/5/2307

8. “Coupling Plant Biomass Derived from Phytoremediation of Potential Toxic-Metal-Polluted Soils to Bioenergy Production and High-Value by-Products—A Review”
by Vázquez-Núñez Edgar, Fernández-Luqueño Fabián, Peña-Castro Julián Mario and Vera-Reyes Ileana
Appl. Sci. 2021, 11(7), 2982; https://doi.org/10.3390/app11072982
Available online: https://www.mdpi.com/2076-3417/11/7/2982

9. “The Influence of Polystyrene Microspheres Abundance on Development and Feeding Behavior of Artemia salina (Linnaeus, 1758)”
by Marco Albano, Giuseppe Panarello, Davide Di Paola, Fabiano Capparucci, Rosalia Crupi, Enrico Gugliandolo, Nunziacarla Spanò, Gioele Capillo and Serena Savoca
Appl. Sci. 2021, 11(8), 3352; https://doi.org/10.3390/app11083352
Available online: https://www.mdpi.com/2076-3417/11/8/3352

10. “Indoor Acoustic Requirements for Autism-Friendly Spaces”
by Federica Bettarello, Marco Caniato, Giuseppina Scavuzzo and Andrea Gasparella
Appl. Sci. 2021, 11(9), 3942; https://doi.org/10.3390/app11093942
Available online: https://www.mdpi.com/2076-3417/11/9/3942

11. “Antioxidant Production in Dunaliella”
by Uttam Kumer Roy, Birthe Vejby Nielsen and John James Milledge
Appl. Sci. 2021, 11(9), 3959; https://doi.org/10.3390/app11093959
Available online: https://www.mdpi.com/2076-3417/11/9/3959

12. “Remediation of Metal/Metalloid-Polluted Soils: A Short Review”
by Carla Maria Raffa, Fulvia Chiampo and Subramanian Shanthakumar
Appl. Sci. 2021, 11(9), 4134; https://doi.org/10.3390/app11094134
Available online: https://www.mdpi.com/2076-3417/11/9/4134

13. “Recent Developments in Lignin- and Tannin-Based Non-Isocyanate Polyurethane Resins for Wood Adhesives—A Review”
by Manggar Arum Aristri, Muhammad Adly Rahandi Lubis, Sumit Manohar Yadav, Petar Antov, Antonios N. Papadopoulos, Antonio Pizzi , Widya Fatriasari, Maya Ismayati and Apri Heri Iswanto
Appl. Sci. 2021, 11(9), 4242; https://doi.org/10.3390/app11094242
Available online: https://www.mdpi.com/2076-3417/11/9/4242

14. “Influencing Multi-Walled Carbon Nanotubes for the Removal of Ismate Violet 2R Dye from Wastewater: Isotherm, Kinetics, and Thermodynamic Studies”
by Khamael M. Abualnaja, Ahmed E. Alprol, Mohamed Ashour and Abdallah Tageldein Mansour
Appl. Sci. 2021, 11(11), 4786; https://doi.org/10.3390/app11114786
Available online: https://www.mdpi.com/2076-3417/11/11/4786

15. “Mycosporine-Like Amino Acids from Red Macroalgae: UV-Photoprotectors with Potential Cosmeceutical Applications”
by Julia Vega, Geniane Schneider, Bruna R. Moreira, Carolina Herrera, José Bonomi-Barufi and Félix L. Figueroa
Appl. Sci. 2021, 11(11), 5112; https://doi.org/10.3390/app11115112
Available online: https://www.mdpi.com/2076-3417/11/11/5112

16. “Extraction of Pigments from Microalgae and Cyanobacteria—A Review on Current Methodologies”
by Fernando Pagels, Ricardo N. Pereira, António A. Vicente and A. Catarina Guedes
Appl. Sci. 2021, 11(11), 5187; https://doi.org/10.3390/app11115187
Available online: https://www.mdpi.com/2076-3417/11/11/5187

17. “Impacts of E-Micromobility on the Sustainability of Urban Transportation—A Systematic Review”
by Buket Şengül and Hamid Mostofi
Appl. Sci. 2021, 11(13), 5851; https://doi.org/10.3390/app11135851
Available online: https://www.mdpi.com/2076-3417/11/13/5851

18. “Diversity of Synthetic Dyes from Textile Industries, Discharge Impacts and Treatment Methods”
by Houda Ben Slama, Ali Chenari Bouket, Zeinab Pourhassan, Faizah N. Alenezi, Allaoua Silini, Hafsa Cherif-Silini, Tomasz Oszako, Lenka Luptakova, Patrycja Golińska and Lassaad Belbahri
Appl. Sci. 2021, 11(14), 6255; https://doi.org/10.3390/app11146255
Available online: https://www.mdpi.com/2076-3417/11/14/6255

19. “Removal of Pharmaceuticals from Water by Adsorption and Advanced Oxidation Processes: State of the Art and Trends”
by Fatma Mansouri, Khawla Chouchene, Nicolas Roche and Mohamed Ksibi
Appl. Sci. 2021, 11(14), 6659; https://doi.org/10.3390/app11146659
Available online: https://www.mdpi.com/2076-3417/11/14/6659

20. “Microplastics in Wastewater and Drinking Water Treatment Plants: Occurrence and Removal of Microfibres”
by Daniel Sol, Amanda Laca, Adriana Laca and Mario Díaz
Appl. Sci. 2021, 11(21), 10109; https://doi.org/10.3390/app112110109
Available online: https://www.mdpi.com/2076-3417/11/21/10109