Table 3: Comparison of the concentration of humic acids
(HA) (%TS) in compost resulting from the anaerobic and/or aerobic treatment of
different substrates.
|
Substrate |
Anaerobic |
Aerobic |
HA (%TS) |
Reference |
|
Sewage sludge |
- |
X |
≈5 |
[29] |
|
Yard waste |
- |
X |
≈10 |
[29] |
|
Bio-waste + yard waste |
- |
X |
≈30 |
[29] |
|
Biowaste |
- |
X |
9 |
[30] |
|
Digestate + bio-waste |
- |
X |
11 |
[30] |
|
Bio-waste |
X |
- |
8.5a |
[5] |
|
Bio-waste |
X |
- |
3.39a |
[33] |
|
Bio-waste |
- |
X |
≈5.8b |
[6] |
|
Bio-waste |
X |
X |
6.12-10.5a,c |
This study |
|
Bio-waste |
X |
X |
6.07-7.26a,d |
This study |
Legend: a = HA + FA;
b = HA/TEC; c = SADB; d = SADB-I.