| Similarity | Rank | |
|---|---|---|
| biogas | 0.880 | 44510 |
| gasification | 0.822 | 64900 |
| biomass | 0.811 | 16091 |
| effluent | 0.798 | 38366 |
| slurry | 0.795 | 39586 |
| composting | 0.783 | 23375 |
| cogeneration | 0.782 | 76666 |
| wastewater | 0.773 | 17337 |
| dewatering | 0.765 | 87432 |
| manure | 0.763 | 19123 |
| feedstock | 0.760 | 46681 |
| anaerobic | 0.748 | 28100 |
| evaporator | 0.744 | 54470 |
| sludge | 0.742 | 25075 |
| recirculation | 0.741 | 82564 |
| aeration | 0.738 | 43387 |
| methane | 0.729 | 19799 |
| compost | 0.726 | 12393 |
| Biomass | 0.722 | 50798 |
| sewage | 0.721 | 15787 |
| biochar | 0.714 | 81934 |
| nitrogen | 0.713 | 12237 |
| incinerator | 0.713 | 60101 |
| composted | 0.712 | 59228 |
| ammonia | 0.710 | 21773 |