Wastewater and sludge The wastewater samples were collected from an oil palm mill where an existing biogas plant is located. Its characteristics of the wastewater are shown in table 1. Fig. 1 shows the experimental set-up.
Wastewater and sludgeThe wastewater samples were collected from an oil palm mill where an existing biogas plant is located. Itscharacteristics of the wastewater are shown in table 1. Fig. 1 shows the experimental set-up.