Table 5.
Ultimate and proximate analyses results of biochars and activated carbon.
| Material /Parameter |
C | H | N | S | Q | Fixed Carbon | Ash | Volatile | Moisture |
|---|---|---|---|---|---|---|---|---|---|
| wt.% | kJ·kg−1 | wt.% | |||||||
| Biochar | |||||||||
| AC_200 | 56.3 | 1.4 | 6.6 | 0.7 | 20,570 | 56.7 | 27.7 | 11.5 | 4.1 |
| AC_400 | 53.2 | 0.7 | 5.7 | 1.0 | 19,590 | 56.2 | 31.2 | 8.7 | 4.1 |
| CBB_200 | 49.9 | 1.4 | 7.6 | 1.0 | 19,510 | 53.3 | 33. 3 | 10.8 | 2.9 |
| CBB_400 | 48.9 | 0.5 | 6.3 | 0.9 | 18,610 | 51.6 | 38.8 | 7.2 | 2.4 |
| SiC_200 | 47.9 | 0.7 | 6.5 | 1.1 | 17,620 | 47.2 | 40.1 | 9.5 | 3.2 |
| SiC_400 | 47.0 | 0.5 | 6.1 | 1.1 | 17,810 | 54.7 | 32.4 | 9.1 | 3.8 |
| ST_200 | 54.9 | 0.8 | 7.2 | 1.0 | 20,270 | 56.3 | 33.4 | 8.7 | 1.7 |
| ST_400 | 59.4 | 0.7 | 7.5 | 1.0 | 20,550 | 58.6 | 32.6 | 7.6 | 1.3 |
| Activated carbon | |||||||||
| ST_400_K2CO3 | 62.8 | 3.4 | 6.6 | 0.5 | 22,680 | 61.8 | 8.4 | 15.2 | 18.8 |
| ST_400_KOH | 52.7 | 3.1 | 3.7 | 0.3 | 18,110 | 49.2 | 18.6 | 11.4 | 20.9 |
| CBB_400_K2CO3 | 66.5 | 2.4 | 6.5 | 0.5 | 22,120 | 64.0 | 0.8 | 19.2 | 16.0 |
| CBB_400_KOH | 57.2 | 2.1 | 4.6 | 0.4 | 18,850 | 55.9 | 20.3 | 13.4 | 10.5 |
| ST_400_K2CO3_D | 67.6 | 2.0 | 7.2 | 0.7 | 23,360 | 64.1 | 3.9 | 21. 8 | 10.3 |
| ST_400_KOH_D | 52.4 | 1.6 | 4.7 | 0.3 | 17,220 | 48.2 | 27.6 | 14.0 | 10.2 |