Research Article
Treatment of Palm Oil Mill Effluent by a Microbial Consortium Developed from Compost Soils
Table 1
Characteristics of the different POME treatments used in the study.
| Parameters (mg/L) | Raw POME | POME supernatant | POME supernatant + (NH4)2SO4 (0.5%) + yeast extract (0.25%) | POME (100%) after treatment with single strain | POME after treatment with mixed cultures |
| pH* | 3.98 ± 0.02 | 3.97 ± 0.03 | 4.03 ± 0.02 | 4.03 ± 0.02 | 7.79 ± 0.15 | Oil/grease (O and G) | 2,800 ± 300 | 840 ± 40 | 860 ± 25 | 530 ± 18 | ND | COD | 60,400 ± 784 | 8,700 ± 500 | 10,350 ± 430 | 10,360 ± 350 | 1,000 ± 100 | Total soluble carbohydrate | 4,470 ± 230 | 580 ± 65 | 660 ± 30 | 645 ± 25 | 845 ± 24 | Total solids (TS) | 27,300 ± 640 | ND | ND | ND | ND | Total suspended solids (TSS) | 24,000 ± 690 | ND | ND | ND | ND | Phenol | 100 ± 00 | 100 ± 00 | 100 ± 00 | 100 ± 00 | ND | Ammonia (nitrogen) | 410 ± 20 | 40 ± 05 | 1,250 ± 85 | 1,520 ± 55 | 780 ± 20 | Nitrogen (total) | 1,850 ± 50 | 110 ± 07 | 2,735 ± 130 | 2,650 ± 90 | 1,920 ± 75 | Nitrates | 500 ± 20 | 90 ± 04 | 840 ± 30 | 830 ± 20 | 750 ± 30 |
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ND: not detected. Not measured in mg/L.
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