PEMBUATAN BIOGAS DARI BERBAGAI LIMBAH CAIR PABRIK KELAPA SAWIT

The purpose of this research is to generate biogas from palm oil mill effluent (POME) taken from various palm oil mills, in order to obtain information which mill has the biggest potential to be used as raw material. Experiments were conducted at laboratory scale using a continuous stirred tank reactor (CSTR) with a volume of two liters. Reactor was equipped with heater to maintain its temperature at 55 C, mixer and two pumps which work in intermittent mode. Main chemicals used in this research were sodium bicarbonate (NaHCO3), ammonium bikarbonat (NH4HCO3), and trace metals. Observed variables were volume of biogas, total solid (TS) and volatile solid (VS), at hydraulic retention time (HRT) 6 days. The results of this study showed that at the same HRT, POME of PT. Sisirau has the highest biogas [28] production, 12.7 liter/day, while Pagar Merbau's POME has the lowest biogas production, 2.36 liter/day. The highest content were from Sisirau's POME, e the lowest content were from Rambutan's POME, 42,000 mg/l for TS 58,610 and 45,400 mg/l, respectively, whil and 37,100 mg/l for VS.