| Composting and Vermicomposting Techniques | Lifetime | 3 | CN 2 | 99.77 |
| Coal and Its By-products | Lifetime | 19 | CN 7 | 99.42 |
| Phosphorus and nutrient management | Lifetime | 26 | CN 7 | 99.40 |
| Heavy metals in environment | Lifetime | 94 | CN 24 | 99.51 |
| Municipal Solid Waste Management | Lifetime | 23 | CN 8 | 99.20 |
| Anaerobic Digestion and Biogas Production | Lifetime | 47 | CN 13 | 99.31 |
| Mine drainage and remediation techniques | Lifetime | 88 | CN 6 | 98.43 |
| Microbial bioremediation and biosurfactants | Lifetime | 128 | CN 13 | 98.40 |
| Pharmaceutical and Antibiotic Environmental Impacts | Lifetime | 387 | CN 104 | 98.25 |
| Waste Management and Recycling | Lifetime | 44 | CN 9 | 96.82 |
| Metal Extraction and Bioleaching | Lifetime | 305 | CN 93 | 97.16 |
| Bauxite Residue and Utilization | Lifetime | 78 | CN 27 | 95.82 |
| Clay minerals and soil interactions | Lifetime | 305 | CN 42 | 97.20 |
| Biofuel production and bioconversion | Lifetime | 955 | CN 179 | 97.31 |
| Recycling and utilization of industrial and municipal waste in materials production | Lifetime | 290 | CN 83 | 96.71 |
| Wastewater Treatment and Nitrogen Removal | Lifetime | 541 | CN 181 | 97.28 |
| Microplastics and Plastic Pollution | Lifetime | 689 | CN 200 | 96.35 |
| Recycling and Waste Management Techniques | Lifetime | 923 | CN 233 | 94.83 |
| Agriculture, Soil, Plant Science | Lifetime | 750 | CN 115 | 92.89 |
| Constructed Wetlands for Wastewater Treatment | Lifetime | 535 | CN 181 | 93.98 |
| Microbial Fuel Cells and Bioremediation | Lifetime | 673 | CN 247 | 94.18 |
| Waste Management and Environmental Impact | Lifetime | 209 | CN 1 | 90.46 |
| Aluminum toxicity and tolerance in plants and animals | Lifetime | 743 | CN 124 | 90.72 |
| Chromium effects and bioremediation | Lifetime | 798 | CN 167 | 89.31 |
| Wastewater Treatment and Reuse | Lifetime | 759 | CN 53 | 89.79 |
| Heavy Metals in Plants | Lifetime | 781 | CN 90 | 86.30 |
| Food Waste Reduction and Sustainability | Lifetime | 694 | CN 41 | 85.99 |
| Electrokinetic Soil Remediation Techniques | Lifetime | 402 | CN 97 | 84.57 |
| Bioeconomy and Sustainability Development | Lifetime | 348 | CN 10 | 81.17 |
| Anaerobic Digestion and Biogas Production | 2021-2025 | 11 | CN 6 | 99.26 |
| Pharmaceutical and Antibiotic Environmental Impacts | 2021-2025 | 162 | CN 106 | 97.03 |
| Biofuel production and bioconversion | 2021-2025 | 193 | CN 72 | 96.65 |
| Composting and Vermicomposting Techniques | 2021-2025 | 47 | CN 39 | 95.54 |
| Phosphorus and nutrient management | 2021-2025 | 129 | CN 72 | 92.92 |
| Waste Management and Recycling | 2021-2025 | 102 | CN 19 | 85.32 |
| Microbial bioremediation and biosurfactants | 2021-2025 | 187 | CN 82 | 87.54 |
| Wastewater Treatment and Reuse | 2021-2025 | 165 | CN 19 | 86.25 |
| Municipal Solid Waste Management | 2021-2025 | 327 | CN 89 | 86.56 |
| Microbial Fuel Cells and Bioremediation | 2021-2025 | 596 | CN 357 | 86.00 |
| Microbial Metabolic Engineering and Bioproduction | 2021-2025 | 949 | CN 350 | 84.76 |
| Bioeconomy and Sustainability Development | 2021-2025 | 160 | CN 4 | 72.20 |
