Heterogeneous Fenton-like degradation of bisphenol A by electric arc furnace slag

BOCERO, FRANCO; INCHAURRONDO, NATALIA; DI LUCA, CARLA; FASCE, LAURA

Lima

Conferencia; 5th Iberoamerican Conference on Advanced Oxidation Technologies; 2022

Universidad Nacional de Ingeniería, Lima, Perú

Electric arc furnace slag (EAFS)  is a  fine  dust that contains  large amounts  of  iron  oxides,  which  makes  it  attractive  for  Fenton oxidation  processes.  In  this  study,  heterogeneous  Fenton oxidation  using  EAFS  as catalyst  shows  effective  degradation  of aqueous  bisphenol-A  (BPA)  in  acidic  media.  The  effect  of  EAF concentration  and  temperature  on  BPA  degradation,  TOCconversion  and  H2O2  efficiency  was  studied  in  a  batch reactor.  In all  conditions,  BPA  degraded  during  the  first  minutes  of  the reaction.  No  significant  improvement  of  mineralization  was observed  beyond  0.5g/L  at  25C.  TOC  removal  considerably accelerated  and  improved as  temperature increased  up to 70C. The  consumption  of  H2O2  increased  with  increasing  temperature while remained practically unchanged as EAFS load in the reactorincreased. EAFS allowed excellent mineralization levels.