Naslov
Minimization of organic content in simulated industrial wastewater by Fenton type processes : a case study

Autori
Grčić, Ivana ; Vujević, Dinko ; Šepčić, Josip ; Koprivanac, Natalija

Izvornik
Journal of hazardous materials (0304-3894) 170 (2009), 2/3; 954-961

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Industrial wastewater treatment; Advanced Oxidation Processes (AOPs); Fenton type processes; Box-Behnken design (BBD); Desirability Function approach (DFA)

Sažetak
Pre-treatment of simulated industrial wastewaters (SIM1, SIM2 and SIM3) containing organic and inorganic compounds (1, 2-dichloroethane, sodium formate, sodium hydrogencarbonate, sodium carbonate and sodium chloride) by oxidative degradation using homogeneous Fenton type processes (Fe2+/H2O2 and Fe3+/H2O2) have been evaluated. The effects of initial Fe2+ and Fe3+ concentrations, [Fe2+/3+], type of iron salt (ferrous sulphate vs. ferric chloride), initial hydrogen peroxide concentration, [H2O2], on mineralization extent, i.e. total organic content (TOC) removal, were studied. Response surface methodology (RSM), particularly Box-Behnken design (BBD) was used as modelling tool, and obtained predictive function was used to optimize the overall process by the means of desirability function approach (DFA). Up to 94% of initial TOC was removed after 120 minutes. Ferrous sulfate was found to be the most appropriate reagent, and the optimal doses of Fe2+ and H2O2 for reducing the pollutant content, in terms of final TOC and sludge production were assessed.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo

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