Chlorobenzene Mineralization Using Plasma/Photocatalysis Hybrid Reactor: Exploiting the Synergistic Effect

Mineralization of gaseous chlorobenzene (major VOC from cement plants) was studied in a continuous reactor using three advanced oxidation processes: (i) photocatalysis, (ii) Dielectric Barrier Discharge (DBD) plasma and (iii) DBD/TiO2-UV coupling. The work showed an overproduction OH * O radicals the reaction medium due to interaction Cl O3. A parametric study carried out order determine evolution removal efficiency as function concentration, flow rate applied voltage. Indeed, variation 0.25 1 m3/h resulted decrease degradation 18 9%. Similarly, increase concentration 13 100 mg/m3 change 4%. When voltage doubled 6 12 kV, varied 22 29 % (plasma) 53 75% (coupling) at mg/m3. COX O3 monitored during experiments. doubled, selectivity increased 28 37% alone 48 62 coupled process. In addition, this same range, amount ozone formed 10 66 ppm 3 This performance can be linked synergistic effect, which intensity electric field by TiO2 improvement catalyst following bombardment various high-energy particles plasma.