Integrated detoxification methodology of hazardous phenolic wastewaters in environmentally based trickle-bed reactors: Experimental investigation and CFD simulation

Lopes, Rodrigo J.G.; Almeida, Teresa; Quinta‐Ferreira, Rosa M.

doi:10.1016/j.jhazmat.2011.02.010

Cited by 5 publications

(1 citation statement)

References 26 publications

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“…In the studies of Lopes et al 44,45 which concern modelling the TBR for the CWAO of phenolic wastewaters, the authors presented the volume averaged equations of mass, momentum and energy of the Eulerian multifluid model. They also used the transfer closure laws, i.e.…”

Section: Introductionmentioning

confidence: 99%

Modelling wet‐air oxidation of phenol in a trickle‐bed reactor using active carbon as a catalyst

Janecki

Szczotka

Burghardt

et al. 2014

J of Chemical Tech & Biotech

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BACKGROUND Catalytic wet air oxidation (CWAO) of phenol in a trickle‐bed reactor has been investigated (operating parameters: P=1.85 MPa, T=393, 413, 433 K, L=0.17–1.77 kg m−2 s−1 and G=0.2–0.62 kg m−2 s−1). Activated carbon was used as a catalyst. The experimental results have been simulated by Eulerian multifluid model (CFD) and for comparison by the plug flow model. RESULTS The experiments proved that active carbon can be applied as a catalyst in the phenol oxidation processes revealing a catalytic activity comparable with that of commonly used metal oxides. The highest conversion of phenol obtained in long‐lasting experimental runs carried out at stable catalytic activity (PO2 = 0.31 MPa, T=413 K) was about 60%. Computed results show that the CFD model approximates better the experimental data (mean error 11.6%; standard deviation 5.2%) than the plug flow model (mean error 16.9%; standard deviation 12.2%). CONCLUSION CWAO of phenol over active carbon as a catalyst cannot be applied as an independent purification method. To remove phenol completely CWAO must be combined with other depolluting technology. The CFD model describes better the hydrodynamic phenomena in a bed of variable porosity than the simple plug flow model. © 2014 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%