The purpose of this study was to investigate the effect of temperature and reaction time on the behavior of phosphorus in sub-and supercritical water gasification of sewage sludge.Gasification was carried outusinga continuous flow reactor,andexperimental runs were conducted by varying temperatureas 300, 350, 500, and 550?C and reaction time in the range of 5 ?30 s.The pressure was fixed at 25 MPa.The effect of temperature and reaction time on P behavior of sewage sludge was investigated.The results showed that organic phosphorus (OP) was almost completely convertedinto inorganic phosphorus (IP) under supercritical condition and shorter residence time (10 s).
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