In this paper

a semi-coke with a particle size of 5-8 mm was used as a carrier to prepare a semi-coke loaded Fe3O4 composite material (Fe3O4@MSCe). The physicochemical properties and valence bond structure of the sample were characterized by SEM

XPS

XRD and FTIR

and the decomposition performance and heat release law of Fe3O4@MSCe/H2O2 multiphase Fenton system were studied. The results show that Fe3O4@MSCe retains the porous morphology of the semi-coke

and Fe3O4 is uniformly and firmly supported on the surface of the semi-coke particles. Under the alkaline conditions of pH=7.8～11.2

both maintain good decomposition activity. In the case of [H2O2] =0.25 mol/L

Fe3O4@MSCe dosage is 533 g·L-1

pH=7.8

T0=30 ℃

300 mL o-phenylenediamine solution with a concentration of 0.04 mol·L-1 decomposition

the rate is 90.9%

and the temperature rise value of the solution is 7.1 ℃. It shows good decomposition performance and exothermic characteristics

which provides technical support for solving the problems of the existing Fenton technology and the energy utilization of sewage treatment.