[Retracted] Anaerobic Treatment of Palm Oil Mill Effluent in Pilot-Scale Anaerobic EGSB Reactor

Table 1

Characteristic and composition of raw POME.

Parameter	Source a	Source b
Temperature (°C)	80–90	ND
pH	4.2	4.5 ± 1.19
Chemical oxygen demand (COD)	51000	76896 ± 119
Biochemical oxygen demand (BOD)	25000	27500 ± 100
Oil and grease (O & G)	6000	ND
Suspended solids (SS)	18000	27000 ± 82
Ammoniacal nitrogen (NH3-N)	35	36 ± 1
Total Kjeldahl nitrogen (TKN)	750	60 ± 6

Notes: Source a: [33]; Source b: [2].
All the measured parameters were expressed in mg/L, except pH and temperature. ND: not provided. Values present were the means of all determinations ± SD (standard deviation).