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

Figure 3

Scanning electron micrographs (SEM) of granular sludge from EGSB showing the predominant bacterial groups: (a) morphology of an overall anaerobic granules (65x magnification); (b) the exterior of anaerobic granules (5,000x magnification); (c) the cavities on the exterior of anaerobic granules (7,500x magnification); (d) the inner of anaerobic granules (7,500x magnification); (e) the inner structure of anaerobic granules (15,000x magnification); (f) the inner of anaerobic granules (10,000x magnification).

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