Table 1 Characteristics of animal wastes and performance of the commercial CSTR digester
From: A sustainable biorefinery to convert agricultural residues into value-added chemicals
Characteristics of animal wastes (AD feedstock) | Valuea |
|---|---|
Total solids (%,TS) | 7.97 ± 0.45 |
Volatile solids (%, VS) | 78.61 ± 1.31 |
COD (mg L−1) | 93,450 ± 2474 |
TP (mg L−1) | 2423 ± 49.33 |
TN (mg L−1) | 3673 ± 110.2 |
Digester performance | Value |
|---|---|
Operating temperature (°C) | 40 |
HRT (days) | 22 |
Biogas production (m3 day−1) | 8495 |
Methane composition (%) | 60 |
Animal wastes feeding the AD (wet tons day−1) | 454 |
Solid digestate generated (wet tons day−1) | 40 |
Liquid digestate generated (tons day−1) | 397 |
Average energy demand for the AD operation (MJ day−1) | 5760 |
Methane production per COD in the AD feedstock (m3 kg−1) | 0.13 |