Abstract:
The purpose of thi s 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. G asification was carried out using a continuous flow reactor and experimental runs were co nducted by varying temperature as 300, 350, 500, and 550 ⁰ 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 converted into inorganic phosphorus (IP) under supercritical condition and shorter residence time (10 s).