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Table 1 Characteristics of raw and enzymatically hydrolysed palm oil mill effluent (POME) used in the experiment

From: Palm oil mill effluent as a low-cost substrate for bioflocculant production by Bacillus marisflavi NA8

Parameters Unit Raw POME Enzymatic POME hydrolysate
Biochemical oxygen demand (BOD) mg/L 16,900 ± 5671 59,483 ± 1200
Chemical oxygen demand (COD) mg/L 82,685 ± 7112 72,727 ± 6389
Total solid (TS) mg/L 73,806 ± 3227 78,956 ± 4337
Total volatile solid (TVS) mg/L 61,680 ± 1351 67,611 ± 3852
Solid suspended (SS) mg/L 46,254 ± 591 27,067 ± 1006
Oil & grease (O&G) mg/L 8540 ± 169 9033 ± 368
Total nitrogen (TN) mg/L 1218 ± 86 1530 ± 36
Volatile fatty acid (VFA) mg/L 1130 ± 77 1287 ± 120
Total organic carbon (TOC) mg/L 7500 ± 2474 23,250 ± 6010
pH   4.34 4.47
Temperature  °C 80 – 90 50
Moisture content % 95 – 96 95.8 – 99.1