The disposal of sewage sludge is one of the problems with common concerns. The traditional methods of sludge treatment have been difficult to meet the increasingly rigid environmental requirements. The sludge fuel utilization is the world's consensus. The conversion of sewage sludge into pellet fuel is the emerging method of sludge utilization due to the characteristics of sewage sludge including high volatile content, low fixed carbon content, impossibility of stable burning, and the improved hydrogen bonding and bridging as starch gelatinization and protein denaturation. The current sludge p...
