Table 2.

Physicochemical properties of palm oil milling effluents.

Parameters	This study (mean ± standard error)	[22]	[26]
pH	4.63–4.70	5.213–6.357	6.56 ± 0.05
DO, mg/L	2.355–3.766	2.567–4.127	4.69 ± 0.00
COD, mg/L	85340–11835	1231–2422	1806.33 ± 7.12
BOD, mg/L	48555–48994	254–1541	382.93 ± 0.89