초록
<P>This study investigated co-cultivation of <I>Tetraselmis suecica</I> microalgae with Oil Palm empty fruit bunch (OPEFB) for anaerobic biomethane production and Palm oil mill effluent (POME) treatment. The highest specific biogas production (0.1162 m<SUP>3 </SUP>kg<SUP>-1</SUP> COD day<SUP>-1</SUP>) and biomethane yield (3900.8 mL CH4 L<SUP>-1</SUP> POME day<SUP>-1</SUP>) was achieved with microalgae at 2 mL mL<SUP>-1</SUP> POME, and OPEFB at 0.12 g mL<SUP>-1</SUP> POME. Without co-digestion of microalgae, higher specific biogas production (0.1269 m<SUP>3</SUP> kg<SUP>-1</SUP> COD day<SUP>-1</SUP>) but lower biomethane yield (3641.8 mL CH4 L<SUP>-1</SUP> POME day<SUP>-1</SUP>) were observed. Second order polynomial model fits the data well with less than 5% error. Higher removal efficiency (62-95%) of COD, BOD, TOC and TN were achieved by aerobic and anaerobic treatment of POME with microalgae than without microalgal treatment after 3 and 7 days of hydraulic retention time (HRT).</P>