Table 5.
TECH knowledge domain. Prevalence of recovered product per source stream across papers that focus on technology development. “NA” stands for not applicable – a combination of a product and source stream that is not plausible
| Product category | Product | Source stream | ||||
|---|---|---|---|---|---|---|
| Urine | Feces | Excreta | Sewage | Total | ||
| Ash and slag | Ash | NA | 6 | 2 | 295 | 303 |
| Slag | NA | 0 | 0 | 0 | 0 | |
| Composite fertilizer | Biocrude | NA | 0 | 0 | 2 | 2 |
| Biostimulant | NA | 0 | 0 | 0 | 0 | |
| Organomineral fertilizer | NA | 0 | 0 | 0 | 0 | |
|
Fecal-derived organic matter |
Biochar | NA | 2 | 14 | 402 | 418 |
| Bioslurry | NA | 0 | 7 | 0 | 7 | |
| Biosolid | NA | 60 | 126 | 862 | 1048 | |
| Solution: macronutrient | Nutrient solution – K | 0 | 0 | 0 | 0 | 0 |
| Nutrient solution – N | 54 | 0 | 2 | 157 | 213 | |
| Nutrient solution – N | P | K | 76 | 0 | 5 | 448 | 529 | |
| Nutrient solution – P | 0 | 0 | 0 | 200 | 200 | |
| Solution: multinutrient | Effluent – treated | 0 | 0 | 4 | 27 | 31 |
| Urine – treated | 194 | NA | NA | NA | 194 | |
| Nutrient-enriched filter | Nutrient-enriched sorbent | 54 | 0 | 2 | 275 | 331 |
| Precipitate: multimineral | Urine - Dried | 0 | 0 | 0 | 0 | 0 |
| Precipitate: monomineral | Ammonium crystals | 1 | 0 | 0 | 0 | 1 |
| Calcium phosphate | 11 | 0 | 7 | 168 | 186 | |
| Iron phosphate | 7 | 0 | 0 | 39 | 46 | |
| K-Struvite | 17 | 0 | 0 | 8 | 25 | |
| Methylene urea crystals | 3 | 0 | 0 | 0 | 3 | |
| Other phosphates | 2 | 0 | 0 | 90 | 92 | |
| Struvite | 126 | 0 | 10 | 639 | 775 | |
| Protein biomass | Fish | 0 | 0 | 0 | 0 | 0 |
| Insect larvae | 0 | 0 | 0 | 0 | 0 | |
| Macrophytes | 2 | 0 | 0 | 15 | 17 | |
| Microalgae | 20 | 0 | 8 | 363 | 391 | |
| Plant | 0 | 0 | 0 | 4 | 4 | |
| Protein | 0 | 0 | 0 | 0 | 3 | |
| Worms | 0 | 0 | 0 | 0 | 0 | |
| Total | 567 | 68 | 187 | 3994 | 4816 | |