From: New efficient meta-fermentation process for lactic acid production from municipal solid waste
Nr. of Feeding strategy | Duration (d) | Operational conditions | Results 36-L digester | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
OLR (kgVS/m3·d) | HRT (d) | pH (-) | TS (%) | Lactic acid (g/100 g) | Lactic acid (g/gTS) | Lactic acid (gCOD/kg) | Lactic acid (gCOD/L)c | % D-Lactic | % L-Lactic | |||
1 | 19 | 4 | 8 | 4.58 ± 0.15 | 10.30 ± 3.75 | 1.26 ± 0.11 | 0.14 ± 0.06 | 14.18 ± 0.45 | 14.75 | – | – | |
2 | 12 | 5 | 6 | 4.65 ± 0.17 | 5.20 ± 0.28 | 0.94 ± 0.38 | 0.18 ± 0.06 | 10.03 ± 4.07 | 10.43 | – | – | |
3 | 18 | 13 | 4 | 4.40 ± 0.10 | 9.17 ± 3.66 | 0.43 ± 0.10 | 0.05 ± 0.02 | 4.59 ± 1.07 | 4.77 | – | – | |
4 | 18 | 15 | 3 | 4.65 ± 0.21 | 6.40 ± 1.70 | 0.81 ± 0.15 | 0.13 ± 0.06 | 8.59 ± 1.58 | 8.93 | 53 | 47 | |
5 | 21 | 24 | 2 | 4.68 ± 0.12 | 8.10 ± 0.69 | 1.24 ± 0.06 | 0.15 ± 0.01 | 13.26 ± 0.65 | 13.79 | 50 ± 1 | 50 ± 1 | |
6 | 9 | 37 | 2a | 4.73 ± 0.27 | 7.65 ± 0.64 | 1.33 ± 0.20 | 0.15 ± 0.04 | 14.19 ± 2.11 | 14.75 | 55 ± 6 | 45 ± 6 | |
7 | 9 | 28 | 2b | 5.03 ± 0.05 | 8.90 | 1.46 | 0.16 | 15.57 | 16.20 | 49 | 51 | |
8 | 21 | 32 | 2a | 4.75 ± 0.29 | 6.83 ± 1.01 | 1.56 ± 0.54 | 0.24 ± 0.10 | 15.92 ± 4.98 | 16.56 | 53 ± 3 | 47 ± 3 |