I²-MnO2 ACTIVATION OF PEROXYMONOSULFATE FOR CATALYTIC PHENOL DEGRADATION IN AQUEOUS SOLUTIONS

Edy Saputra (Department of Chemical Engineering, Universitas Riau)
Syaifullah Muhammad (Department of Chemical Engineering, Syiah Kuala University)
Hongqi Sun (Department of Chemical Engineering Curtin University)
Ha-Ming Ang (Department of Chemical Engineering Curtin University)
Moses O. Tade (Department of Chemical Engineering Curtin University)
Shaobin Wang (Department of Chemical Engineering, Curtin University)

CHEMICA Jurnal Teknik Kimia
Vol 1, No 1 (2014): Juni 2014

I²-MnO2 was prepared and used to activate peroxymonosulphate for degradation of aqueous phenol. The sample was characterized by N2 adsorption, X-ray diffraction (XRD), scanning electron microscopy (SEM). The catalyst is highly effective in heterogeneous activation of PMS to produce sulfate radicals for phenol degradation compared with homogeneous oxidatiom. I²-MnO2 could completely remove phenol in 30 min at the conditions of 25 ppm phenol, 0.4 g/L catalyst, 2 g/L PMS, and 25 oC. A pseudo first order model would fit to phenol degradation kinetics and activation energy was obtained as 38.2 kJ/mol.