| Environmental Science and Ecology | Lifetime | 12 | CN 1 | 100.00 |
| Engineering, Technology and Energy | Lifetime | 509 | CN 154 | 99.91 |
| Materials Science | Lifetime | 682 | CN 183 | 99.69 |
| Environmental Science and Ecology | 2021-2025 | 604 | CN 275 | 99.45 |
| Water Science and Technology | Lifetime | 9 | CN 1 | 99.98 |
| Pollution | Lifetime | 7 | CN 3 | 99.97 |
| Biomedical Engineering | Lifetime | 70 | CN 14 | 99.88 |
| Industrial Environmental Engineering | Lifetime | 25 | CN 9 | 99.74 |
| Renewable Energy, Sustainability and the Environment | Lifetime | 42 | CN 18 | 99.91 |
| Materials Chemistry | Lifetime | 347 | CN 90 | 99.67 |
| Health, Toxicology and Mutagenesis | Lifetime | 117 | CN 18 | 99.52 |
| Soil Science and Agricultural Water Management | Lifetime | 129 | CN 24 | 99.36 |
| Plant Science | Lifetime | 773 | CN 73 | 98.77 |
| Building and Construction | Lifetime | 596 | CN 139 | 97.77 |
| Environmental Chemistry | Lifetime | 460 | CN 63 | 96.20 |
| Environmental Engineering | Lifetime | 771 | CN 159 | 95.63 |
| Nanoscience and Nanotechnology | Lifetime | 147 | CN 38 | 95.67 |
| Bioengineering | Lifetime | 352 | CN 43 | 89.26 |
| Chemical Synthesis and Catalysis | Lifetime | 978 | CN 201 | 90.44 |
| Process Chemistry and Technology | Lifetime | 237 | CN 50 | 84.81 |
| Water Science and Technology | 2021-2025 | 195 | CN 98 | 97.94 |
| Pollution | 2021-2025 | 169 | CN 88 | 97.35 |
| Renewable Energy, Sustainability and the Environment | 2021-2025 | 496 | CN 318 | 96.30 |
| Environmental remediation with nanomaterials | Lifetime | 1 | CN 1 | 99.96 |
| Adsorption and biosorption for pollutant removal | Lifetime | 3 | CN 1 | 99.98 |
| Advanced Photocatalysis Techniques | Lifetime | 12 | CN 6 | 99.97 |
| Chromium effects and bioremediation | Lifetime | 2 | CN 1 | 99.86 |
| Heavy metals in environment | Lifetime | 12 | CN 5 | 99.92 |
| Microplastics and Plastic Pollution | Lifetime | 5 | CN 1 | 99.90 |
| Nanomaterials for catalytic reactions | Lifetime | 8 | CN 3 | 99.95 |
| Advanced Nanomaterials in Catalysis | Lifetime | 14 | CN 8 | 99.86 |
| Graphene and Nanomaterials Applications | Lifetime | 17 | CN 6 | 99.85 |
| Gas Sensing Nanomaterials and Sensors | Lifetime | 67 | CN 37 | 99.68 |
| Composting and Vermicomposting Techniques | Lifetime | 7 | CN 4 | 99.74 |
| Microbial bioremediation and biosurfactants | Lifetime | 17 | CN 2 | 99.63 |
| Advanced oxidation water treatment | Lifetime | 25 | CN 10 | 99.72 |
| Recycling and Waste Management Techniques | Lifetime | 35 | CN 9 | 99.42 |
| Nanoparticles: synthesis and applications | Lifetime | 53 | CN 10 | 99.45 |
| Phosphorus and nutrient management | Lifetime | 25 | CN 6 | 99.40 |
| Enzyme-mediated dye degradation | Lifetime | 21 | CN 2 | 99.40 |
| Covalent Organic Framework Applications | Lifetime | 62 | CN 27 | 99.55 |
| Membrane Separation Technologies | Lifetime | 74 | CN 26 | 99.50 |
| Pharmaceutical and Antibiotic Environmental Impacts | Lifetime | 81 | CN 17 | 99.51 |
| Wastewater Treatment and Nitrogen Removal | Lifetime | 72 | CN 22 | 99.45 |
| Carbon and Quantum Dots Applications | Lifetime | 47 | CN 33 | 98.91 |
| Advanced biosensing and bioanalysis techniques | Lifetime | 295 | CN 133 | 99.26 |
| Copper-based nanomaterials and applications | Lifetime | 147 | CN 73 | 99.27 |
| Constructed Wetlands for Wastewater Treatment | Lifetime | 51 | CN 19 | 98.80 |
| Industrial Gas Emission Control | Lifetime | 45 | CN 17 | 98.85 |
| Electrochemical sensors and biosensors | Lifetime | 245 | CN 97 | 99.03 |
| TiO2 Photocatalysis and Solar Cells | Lifetime | 168 | CN 67 | 99.10 |
| Electrokinetic Soil Remediation Techniques | Lifetime | 15 | CN 3 | 98.40 |
| Analytical chemistry methods development | Lifetime | 223 | CN 37 | 98.75 |
| Catalytic Processes in Materials Science | Lifetime | 623 | CN 206 | 99.06 |
| Odor and Emission Control Technologies | Lifetime | 56 | CN 8 | 98.16 |
| Mercury impact and mitigation studies | Lifetime | 161 | CN 32 | 98.54 |
| Arsenic contamination and mitigation | Lifetime | 127 | CN 33 | 98.21 |
| Layered Double Hydroxides Synthesis and Applications | Lifetime | 118 | CN 40 | 97.40 |
| Water Quality and Pollution Assessment | Lifetime | 270 | CN 46 | 97.70 |
| Thermochemical Biomass Conversion Processes | Lifetime | 344 | CN 116 | 98.07 |
| Anaerobic Digestion and Biogas Production | Lifetime | 195 | CN 56 | 97.96 |
| Extraction and Separation Processes | Lifetime | 562 | CN 212 | 97.08 |
| Water Quality Monitoring and Analysis | Lifetime | 629 | CN 122 | 96.30 |
| Coal and Its By-products | Lifetime | 266 | CN 102 | 96.11 |
| Microbial Fuel Cells and Bioremediation | Lifetime | 345 | CN 123 | 96.60 |
| Water Treatment and Disinfection | Lifetime | 417 | CN 121 | 96.46 |
| Biosensors and Analytical Detection | Lifetime | 947 | CN 468 | 95.89 |
| Lignin and Wood Chemistry | Lifetime | 583 | CN 168 | 95.99 |
| Municipal Solid Waste Management | Lifetime | 333 | CN 72 | 94.55 |
| Environmental Quality and Pollution | Lifetime | 198 | CN 189 | 92.26 |
| Nanocluster Synthesis and Applications | Lifetime | 887 | CN 468 | 94.76 |
| Geochemistry and Elemental Analysis | Lifetime | 896 | CN 160 | 95.38 |
| Subcritical and Supercritical Water Processes | Lifetime | 176 | CN 43 | 94.38 |
| Membrane Separation and Gas Transport | Lifetime | 711 | CN 229 | 94.44 |
| Environmental Chemistry and Analysis | Lifetime | 289 | CN 30 | 92.72 |
| Coagulation and Flocculation Studies | Lifetime | 276 | CN 59 | 90.98 |
| Environmental and Social Impact Assessments | Lifetime | 240 | CN 6 | 89.53 |
| Mine drainage and remediation techniques | Lifetime | 982 | CN 108 | 90.37 |
| Soil and Land Suitability Analysis | Lifetime | 663 | CN 81 | 85.86 |
| Healthcare and Environmental Waste Management | Lifetime | 761 | CN 52 | 78.62 |
| Bauxite Residue and Utilization | Lifetime | 930 | CN 329 | 77.70 |
| Waste Management and Recycling | Lifetime | 730 | CN 87 | 73.70 |
| Environmental Justice and Health Disparities | Lifetime | 962 | CN 38 | 75.47 |
| Water Resources and Sustainability | Lifetime | 538 | CN 448 | 62.53 |
| Advanced Photocatalysis Techniques | 2021-2025 | 321 | CN 234 | 99.05 |
| Advanced oxidation water treatment | 2021-2025 | 113 | CN 83 | 97.75 |
| Microplastics and Plastic Pollution | 2021-2025 | 245 | CN 100 | 97.21 |
| Recycling and Waste Management Techniques | 2021-2025 | 269 | CN 106 | 96.10 |
| Environmental remediation with nanomaterials | 2021-2025 | 384 | CN 314 | 88.61 |
| Graphene and Nanomaterials Applications | 2021-2025 | 974 | CN 254 | 85.86 |
| Arsenic contamination and mitigation | 2021-2025 | 997 | CN 616 | 73.77 |
| Layered Double Hydroxides Synthesis and Applications | 2021-2025 | 983 | CN 513 | 64.13 |